Aviation Maintenance WC

MCI 6002
MARINE CORPS INSTITUTE
AVIATION MAINTENANCE
WORKCENTER SUPERVISOR
MARINE BARRACKS
WASHINGTON, DC
UNITED STATES MARINE CORPS
MARINE CORPS INSTITUTE
912 CHARLES POOR STREET SE
WASHINGTON NAVY YARD DC 20391-5680
IN REPLY REFER TO:
1550
Ser 2563
1 Mar 05
From: Director
To: Marine Corps Institute Student
Subj: AVIATION MAINTENANCE WORKCENTER SUPERVISOR COURSE (MCI 6002)
1. Purpose. The subject course is published to provide instruction to all Marines in aviation
occupational fields who are or may be assigned to duties as an aviation maintenance workcenter
supervisor
2. Scope. This course addresses three fundamental areas of responsibility that most aviation
maintenance workcenter supervisors will engage in the performance of their duties. These areas
are directive programs, safety oriented programs, and tool and material upkeep procedures.
3. Applicability. This course is intended for instructional purposes only. It is designed for
Marines in the ranks of LCpl through Sgt. These Marines may or may not be currently assigned
as an aviation maintenance workcenter supervisor.
4. Recommendations. Comments and recommendations on the contents of the course are

invited and will aid in subsequent course revisions. Please complete the course evaluation
questionnaire at the end of the final examination. Return the questionnaire and the examination
booklet to your proctor.
T. M. FRANUS
By Direction
Table of Contents
Page
Contents........................................................................................................................ i
Student Information ...................................................................................................... iii
Study Guide.................................................................................................................. v
Study Unit 1 Directive Programs..................................................................... 1-1
Lesson 1 Maintenance Training Program .................................................. 1-3

Lesson 2 Technical Directive Compliance Program .................................. 1-29
Study Unit 2 Safety Oriented Programs........................................................... 2-1
Lesson 1 Fuel Surveillance Program ......................................................... 2-3

Lesson 2 Navy Oil Analysis Program........................................................ 2-27
Lesson 3 Aviation Breathing Oxygen Surveillance Program...................... 2-49
Lesson 4 Hydraulic Contamination Control Program................................. 2-75
Lesson 5 Tire and Wheel Maintenance Safety Program............................. 2-121
Lesson 6 Foreign Object Damage Program ............................................... 2-149
Lesson 7 Hazardous Material Control and Management Program.............. 2-169
Lesson 8 Electrostatic Discharge Program................................................. 2-195
Lesson 9 Miniature/Microminiature Program ............................................ 2-215
Study Unit 3 Tool and Material Upkeep Programs .......................................... 3-1
Lesson 1 Oil Consumption Program.......................................................... 3-3

Lesson 2 Tool Control Program ................................................................ 3-13
Lesson 3 Corrosion Prevention and Control Program ................................ 3-43
Lesson 4 Support Equipment Operator Training and Licensing Program... 3-65
Appendix A Acronyms and Abbreviations ..................................................... A-1

Appendix B Definition of Terms.................................................................... B-1
Review Lesson ................................................................................................... R-1
MCI Course 6002 i

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MCI Course 6002 ii

Student Information
Number and MCI 6002

Title AVIATION MAINTENANCE WORKCENTER SUPERVISOR
Study Hours 8
Course Text
Materials
Review Agency Commanding Officer

Naval Aviation Schools, Schools Command
Naval Air Station, Pensacola, FL 32508-0001
Reserve 3
Retirement
Credits (RRC)
ACE Not applicable to civilian training/education
Assistance For administrative assistance, have your training officer or NCO log on to the
MCI home page at www.mci.usmc.mil. Marines CONUS may call toll free
1-800-MCI-USMC. Marines worldwide may call commercial (202) 685-
7596 or DSN 325-7596.
MCI Course 6002 iii

MCI Course 6002 iv

Study Guide
Bravo Congratulations on your enrollment in a distance education course from the

Distance Learning and Technologies Department (DLTD) of the Marine
Corps Institute (MCI). Since 1920, the Marine Corps Institute has been
helping tens of thousands of hard-charging Marines, like you, improve their
technical job performance skills through distance learning. By enrolling in
this course, you have shown a desire to improve the skills you have and
master new skills to enhance your job performance. The distance learning
course you have chosen, MCI 6002, Aviation Maintenance Workcenter
Supervisor, provides instruction to Marines in the ranks of LCpl through Sgt
in Aviation Occupational Fields who are or may be assigned duties as an
aviation maintenance workcenter supervisor. You will learn the basic
requirements of many programs used in the aviation maintenance community,
to include directive programs, safety oriented programs, and tool and material
upkeep programs.
Your Personal • YOU ARE PROPERLY MOTIVATED. You have made a positive
Characteristics decision to get training on your own. Self-motivation is perhaps the most
important force in learning or achieving anything. Doing whatever is
necessary to learn is motivation. You have it!
• YOU SEEK TO IMPROVE YOURSELF. You are enrolled to improve

those skills you already possess, and to learn new skills. When you
improve yourself, you improve the Corps!
• YOU HAVE THE INITIATIVE TO ACT. By acting on your own, you

have shown you are a self-starter, willing to reach out for opportunities to
learn and grow.
• YOU ACCEPT CHALLENGES. You have self-confidence and believe

in your ability to acquire knowledge and skills. You have the self-
confidence to set goals and the ability to achieve them, enabling you to
meet every challenge.
• YOU ARE ABLE TO SET AND ACCOMPLISH PRACTICAL

GOALS. You are willing to commit time, effort, and the resources
necessary to set and accomplish your goals. These professional traits will
help you successfully complete this distance learning course.
Continued on next page
MCI Course 6002 v

Study Guide, Continued
Beginning Your Before you actually begin this course of study, read the student information
Course page. If you find any course materials missing, notify your training officer or
training NCO. If you have all the required materials, you are ready to begin.
To begin your course of study, familiarize yourself with the structure of the
course text. One way to do this is to read the table of contents. The table of
contents covers specific areas of study and the order in which they are
presented. You will find the text divided into several study units. Each study
unit is comprised of two or more lessons and a lesson exercise.
Leafing Leaf through the text and look at the course. Read a few lesson exercise
Through the questions to get an idea of the type of material in the course. If the course has
Text additional study aids, such as a handbook or plotting board, familiarize
yourself with them.
The First Study Turn to the first page of Study Unit 1. On this page, you will find an
Unit introduction to the study unit. Study unit lessons contain learning objectives,
lesson text, and exercises.
Reading the Learning objectives describe in concise terms what the successful learner,
Learning you, will be able to do as a result of mastering the content of the lesson text.
Objectives Read the objectives for each lesson and then read the lesson text. As you read
the lesson text, make notes on the points you feel are important.
Completing the To determine your mastery of the learning objectives and text, complete the
Exercises exercises developed for you. Exercises are located at the end of each lesson.
Without referring to the text, complete the exercise questions and then check
your responses against those provided.
MCI Course 6002 vi

Continuing to Continue on to the next lesson, repeating the above process until you have
March completed all lessons in the study unit. Follow the same procedures for each
study unit in the course.
Preparing for To prepare for your final exam, you must review what you learned in the
the Final Exam course. The following suggestions will help make the review interesting and
challenging.
• CHALLENGE YOURSELF. Try to recall the entire learning sequence

without referring to the text. Can you do it? Now look back at the text to
see if you have left anything out. This review should be interesting.
Undoubtedly, you’ll find you were not able to recall everything. But with
a little effort, you’ll be able to recall a great deal of the information.
• USE UNUSED MINUTES. Use your spare moments to review. Read

your notes or a part of a study unit, rework exercise items, review again;
you can do many of these things during the unused minutes of every day.
• APPLY WHAT YOU HAVE LEARNED. It is always best to use the

skill or knowledge you have learned as soon as possible. If it is not
possible to actually use the skill or knowledge, at least try to imagine a
situation in which you would apply this learning. For example, make up
and solve your own problems. Or, better still, make up and solve
problems that use most of the elements of a study unit.
• USE THE “SHAKEDOWN CRUISE” TECHNIQUE. Ask another

Marine to lend a hand by asking you questions about the course. Choose
a particular study unit and let your buddy “fire away.” This technique can
be interesting and challenging for both of you!
• MAKE REVIEWS FUN AND BENEFICIAL. Reviews are good habits

that enhance learning. They do not have to be long and tedious. In fact,
some learners find short reviews conducted more often prove more
beneficial.
MCI Course 6002 vii

Tackling the When you have completed your study of the course material and are confident
Final Exam with the results attained on your study unit exercises, take the sealed envelope
marked “FINAL EXAM” to your unit training NCO or training officer.
Your training NCO or officer will administer the final examination and return
the examination and the answer sheet to MCI for grading. Before taking your
final examination, read the directions on the DP-37 answer sheet carefully.
Completing The sooner you complete your course, the sooner you can better yourself by
Your Course applying what you’ve learned! HOWEVER--you do have 2 years from the
date of enrollment to complete this course.
Graduating! As a graduate of this distance education course and as a dedicated Marine,

your job performance skills will improve, benefiting you, your unit, and the
Marine Corps.
Semper Fidelis!
MCI Course 6002 viii

STUDY UNIT 1
DIRECTIVE PROGRAMS
Overview
Content Whenever maintenance is involved within the aviation community, mistakes

or misunderstandings can lead to disastrous consequences. Improper training
of personnel or faulty maintenance can have effects ranging from minor
injury of personnel to loss of life, and from damage to aircraft or equipment
to total loss of aircraft and associated equipment. This study unit introduces
you to two directive programs that help maintenance activities eliminate such
problems.
Scope Training of personnel and incorporation of technical changes on aircraft are

two ways to ensure availability of aircraft as well as safety of all personnel
within a maintenance activity. These are broken down into unique and
specific programs within the aviation community. The purpose of this study
unit is to provide you with the skills to manage these programs as a
workcenter supervisor.
In This Study This study unit contains the following lessons

Unit
Topic See Page

Maintenance Training Program 1-3
Technical Directive Compliance Program 1-29
MCI Course 6002 1-1 Study Unit 1


LESSON 1
MAINTENANCE TRAINING PROGRAM
Introduction
Scope Maintenance training maintains and increases technical knowledge and

proficiency of personnel within a maintenance activity. A command's
responsibility is to ensure that all supervisors assign personnel that are
adequately trained to safely and proficiently perform all duties. The proper
training of personnel is the lifeblood of a maintenance activity. Without it,
the consequences are unacceptable.
Content This lesson will provide you with the
• Guidance needed as a workcenter supervisor to monitor the Maintenance

Training Program (MTP) within an aviation maintenance activity.
• Proper procedures for managing a MTP within your workcenter.
• Dynamics of the MTP ranging from indoctrination training to on-the-job

training (OJT).
Learning Upon completion of this lesson, you should be able to

Objectives
• Identify the purpose of the MTP.
• Identify the references used to manage the MTP.
• Determine the responsibilities of the workcenter supervisor in the NAMP.
• Identify each type of training the workcenter supervisor is responsible for

within the MTP.
MCI Course 6002 1-3 Study Unit 1, Lesson 1

Introduction, Continued
In This Lesson This lesson contains the following topics
Topic See Page

Introduction 1-3
Maintenance Training Program 1-5
Naval Aviation Maintenance Program 1-6
Formal In-Service Training 1-8
Required Reading 1-9
Indoctrination Training 1-11
Follow-on Training 1-15
Naval Occupational Safety and Health Training 1-16
Informal In-Service Training 1-20
Personnel 1-23
Individual Training Standards System Maintenance Training 1-24
Management and Evaluation Program
Lesson 1 Exercise 1-25

Maintenance Training Program
Purpose The Maintenance Training Program establishes policies, responsibilities, and

requirements for implementing training within aviation maintenance
activities.
References Listed below are required references needed to manage a Maintenance

Training Standards Program within your workcenter:
• OPNAVINST 4790.2H, Naval Aviation Maintenance Program (NAMP)
• MCO P4790.20, Individual Training Standards System (ITSS)

Maintenance Training Management and Evaluation Program (MATMEP)
• OPNAVINST 5100.23, Navy Occupational Safety and Health (NAVOSH)

Program Manual

Program Manual for Forces Afloat
Note: Reference nomenclatures will periodically change due to updates and

new equipment. Always use the most current versions for reference
material.

Naval Aviation Maintenance Program
Purpose The OPNAVINST 4790.2H, Naval Aviation Maintenance Program (NAMP)

issues maintenance policies, procedures, and responsibilities for managing
aviation maintenance at all levels of maintenance throughout naval aviation.
It is the basic document and authority governing the management of all naval
aviation maintenance.
This instruction outlines command, administrative, and management

relationships and establishes policies and procedures for the assignment of
maintenance responsibilities and tasks.
Revise all directives and instructions in conflict with the provisions of this
instruction to ensure conformity.
Objectives The objective of the NAMP is to meet and exceed aviation readiness and
safety standards established by the Chief of Naval Operations (CNO). This is
accomplished by optimizing the use of manpower, material, facilities, and
financial resources in accordance with policy and technical direction provided
by the NAMP and related directives.
Methodology The NAMP provides
• Maintenance, manufacture, and calibration of aeronautical equipment and

material at the level of maintenance that will ensure optimum use of
resources
• Protection of weapon systems from corrosive elements through an active

corrosion control program and systematic planned maintenance program
• Collection, analysis, and use of pertinent data to continuously improve

material readiness and safety at the least possible cost

Naval Aviation Maintenance Program, Continued
Responsibilities As a workcenter supervisor, you have an enormous responsibility for the lives
of your personnel and millions of dollars worth of aircraft/equipment.
Volume V, chapter 2 of the OPNAVINST 4790.2H, provides a list of

minimum responsibilities for the workcenter supervisor when managing a
MTP. As a workcenter supervisor, you should strive to exceed the minimum
requirements for any task in a supervisory position, especially when the safety
of personnel, aircraft and related equipment is a primary responsibility of all
workcenter supervisors.
Implementing a proper training system is the first of many steps for you to
achieve this goal.
Training As workcenter supervisor, you are responsible for ensuring the following
types of training are conducted:
• Formal In-Service
• Required Reading
• Indoctrination
• Follow-On
• NAVOSH
• Informal In-Service
Performance In addition, you are responsible for ensuring the following actions are
performed:
• Interview each individual and review the qualification/certification record

MATMEP. The MATMEP is explained in a later section.
• Completed training is documented in the individual’s qualification/

certification record.
• Transfer individuals check out properly.

Formal In-Service Training
Types The two types of formal in-service training conducted are lectures and
required reading.
Lectures The assistant maintenance officer (AMO) schedules lectures. The schedule is
published in the monthly maintenance plan (MMP) and includes
• Time
• Location
• Attendees
• Subjects
• Instructors
In “I” level maintenance the assistant aircraft maintenance officer (AAMO)

schedules lectures.
Lesson Guides Lesson guides are used to conduct lectures. The MCO P4790.20 ITSS
MATMEP is a general information and formatting source for lesson guides.
Three points to remember when using lesson guides are listed below:
• Develop lesson guides that pertain to your position as workcenter

supervisor.
• Ensure knowledgeable personnel develop lesson guides in their area of

expertise.
• Ensure your unit ITSS coordinator maintains a central file of all lesson
guides developed by the Maintenance Training Model Manager (MTMM)
applicable to your unit.
The face of aviation is changing rapidly. To keep current with new

technologies and breakthroughs, review your workcenter’s lesson guide on a
regular basis to ensure it is current.

Required Reading
Two Categories Required reading files are divided into two categories:
• Active
• Standing
Active The active required reading file contains maintenance information of a

temporary or short-term nature, such as messages, notices, or memos
affecting a finite period (generally several days or weeks).
Review the active required reading file monthly to ensure the material is
current and all workcenter personnel are logging their progress. When the
information is no longer immediate, purge it from the file or move it to the
standing required reading file.
Standing The standing required reading file contains information of a long-term nature,
such as directives, instructions, or manuals that apply for extended periods
(several months or more).
Review standing required reading files monthly to ensure the information is

current and read by newly assigned personnel. Purged contents may be
retained for reference or indoctrination of new members.
Cross- A required reading cross-reference locator sheet lists the location of any item
Reference not available to an individual workcenter or too bulky to be included. For
Locator large publications and instructions, use the required reading cross-reference
locator sheet to itemize specific chapters/sections/paragraphs related to the
duties of the workcenter.

Required Reading, Continued
Major Areas of The three major areas of formal training are

Formal
Training • Indoctrination
• Follow-on
• NAVOSH training
Challenge While reviewing the active reading board, you will find a message in which
the prescribed time frame has expired. What should you do with the
message?
ANSWER-purge it from the active board. See page 1-9.

Indoctrination Training
Purpose Indoctrination training is designed to familiarize your personnel with the

specific covered topics. This training is conducted upon arrival to the
workcenter and before the individual is allowed to perform any duties listed
in the NAMP training requirements chart shown on the next page.
Examples Examples of indoctrination training are
• Fuel Surveillance Program

• Hydraulic Contamination Control Program
Indoctrination Indoctrination training does not replace qualification training required for
vs. Collateral collateral duties. Examples of collateral duties are
Duties
• Dispersed Technical Publications Librarian
• Workcenter Tool Control NCO
• Foreign Object Damage (FOD)
Provide specific training directly related to the duties and responsibilities of a

collateral duty before a collateral duty assignment.
Requirements The NAMP training requirements for indoctrination training are
• Provided to personnel within 30 days of reporting, but may be extended to

60 days if operational commitments or mitigating circumstances exist
• Not required in any specific format, but shall provide sufficient time to
complete requirements using the applicable NAMP standard operating
procedures (SOP) chapter as a guide
• Recorded in the qualification/certification record
Tailor command indoctrination to accommodate different levels of experience

of reporting personnel.

Indoctrination Training, Continued
Requirements, Below is a list of the NAMP training requirements.

continued
Topic OPNAVINST 4790.2 Remarks

Fuel Surveillance Program Volume V, Chapter 3 Indoc. all personnel engaged in fuel
surveillance processes and follow-on (as
required).
Navy Oil Analysis Program Volume V, Chapter 4 Indoc. all personnel engaged in NOAP
processes and follow-on (as required).
Aviators Breathing Oxygen Volume V, Chapter 5 Indoc. all personnel engaged in ABO
Surveillance Program processes and follow-on (as required).
Hydraulic Contamination Control Volume V, Chapter 6 Indoc. all personnel, regardless of
Program rating/MOS, prior to performing aircraft, SE
hydraulic component maintenance, or
hydraulic SE
operation and follow-on (as required).
Tire and Wheel Maintenance Volume V, Chapter 7 Indoc. all personnel, regardless of
Safety Program rating/MOS, placing emphasis on the
hazards associated with aircraft/SE tires and
follow-on (as required).
Quality Assurance Audit Program Volume V, Chapter 8 Indoc. all supervisors, program managers,
and QAR/CDQAR/CDI personnel on
CSEC.
Oil Consumption Program Volume V, Chapter 9 Indoc. all personnel and follow-on (as
required).
Naval Aviation Maintenance Volume V, Chapter 10 Indoc. all personnel and follow-on (as
Discrepancy Reporting Program required).
Technical Directive Compliance Volume V, Chapter 11 Indoc. all personnel and follow-on (as
Program required). Special emphasis for supervisors,
Maintenance/Production Control (including
Logs and Records) and Material Control
personnel and QARs/CDQARs/CDIs.
Foreign Object Damage Prevention Volume V, Chapter 12 Indoc. all personnel and follow-on (as
Program required).
Tool Control Program Volume V, Chapter 13 Indoc. all personnel engaged in
aircraft/SE/component repair and follow-on
(as required).
Corrosion Prevention and Control Volume V, Chapter 14 Indoc. all personnel and follow-on (as
Program required).
Plane Captain Qualification Volume V, Chapter 15 Indoc. all personnel and follow-on (as
Program required).
Egress/Explosive System Checkout Volume V, Chapter 16 Indoc. all personnel performing maintenance
Program on aircraft equipped with ejection seats and
every 6
months thereafter.
Support Equipment Operator Volume V, Chapter 17 Indoc. all personnel and follow-on (as
Training and Licensing Program required).
Support Equipment Planned Volume V, Chapter 18 Indoc. all personnel who use SE and follow-
on (as required).

Requirements,
continued
Topic OPNAVINST 4790.2 Remarks

Naval Aviation Metrology and Volume V, Chapter 19 Indoc. all personnel who use calibrated
Calibration Program equipment and follow-on (as required).
Hazardous Material Control and Volume V, Chapter 20 Indoc. all personnel and follow-on (as
Management Program required).
Individual Component Repair Volume V, Chapter 21 All I-level personnel and follow-on (as
Program required).
Electrostatic Discharge Program Volume V, Chapter 22 Indoc. all personnel who handle ESD
sensitive devices and follow-on (as required).
Miniature/Micro miniature Volume V, Chapter 23 Indoc. all personnel and follow-on (as
Program required).
Aviation Gas Free Engineering Volume I, Chapter 10 Indoc. all personnel engaged in fuel cell/tank
Program maintenance and follow-on (as required).
Support Equipment Misuse and Volume I, Chapter 10 Indoc. all personnel and follow-on (as
Abuse required).
Emergency Reclamation Volume I, Chapter 10 Indoc. all personnel and quarterly for
Volume V, Chapter 14 Emergency Reclamation Team members.
Nondestructive Inspection Program Volume I, Chapter 10 Indoc. all personnel and follow-on (as
required).
Maintenance Department Safety Volume I, Chapter 14 Indoc. all personnel and follow-on (as
Program required).
Note: The requirements listed in the above table are not intended to affect the following
personnel/naval aviation maintenance programs which require specific training before
an individual receives a certification/designation/license.
1. Hydraulic Contamination Patch Test Technician

2. Tire and Wheel Technician
3. QAR/CDQAR/CDI
4. AVGFE
5. Plane Captain
6. SE Operator
7. 2M Technician
8. NDI Technician
9. Aeronautical Welder
10. Explosive Handler
11. Vibration Analysis Technician
12. Test Cell Operator
13. Battery Maintenance Technician
14. Respirator User
15. Oil Analysis Technician
16. Taxi/Turn-up
17. Corrosion Control Formal Training Requirements

Documentation Record all training on an applicable indoctrination-training sheet and file it in

the qualification/certification record. Documentation of training must include
the signature of the instructor and training date. Below is an example of an
indoctrination-training sheet.

Follow-on Training
Introduction Follow-on training shall be accomplished when directed by higher authority

and as dictated by local requirements or conditions.
Requirements Follow-on training is required for some, but not all programs. Refer to
OPNAVINST 4790.2H to determine whether such training is required.
Documentation • Use OPNAV Form 4790/33 or equivalent form of documentation for

follow-on training. See page 1-18.
• Record in the Marines individual qualification/certification record.

Naval Occupational Safety and Health Training
Introduction The training requirements to support Naval Occupational Safety and Health
(NAVOSH) training are extensive and are an integral part of formal training.
As in other formal training, NAVOSH training is accomplished through
required reading and lectures set forth in the monthly maintenance plan.
Consequences As a workcenter supervisor, it is important that Marines under your charge

of Training are properly trained in all safety procedures. Without the proper training,
Failures your Marines may seriously injure themselves and other personnel or cause
damage to equipment. Consequences of safety failures that can be
devastating are listed below.
• Aviation occupations by nature are dangerous.
• Personnel can come in contact with hazardous materials and dangerous

equipment.
It is imperative that personnel use personal protective equipment and follow

other safety procedures to guard against injury.
Proper Safety You may have heard Marines say, “Oh, I won’t need my cranial for this job,”
Attitude or “I’ll just be out on the line for a minute. I don’t need my hearing
protection.” These types of comments reflect a negative attitude towards
safety.
This may be a result of
• Improper training
• Lack of confidence in safety gear
• Indifference
Any of these reasons or excuses is unacceptable, and can lead to serious

consequences. It is your responsibility to ensure your Marines receive the
proper training and understand the importance of such training.
Take heed and make this training of utmost importance in your workcenter!

Naval Occupational Safety and Health Training, Continued
References OPNAVINST 5100.19 and OPNAVINST 5100.23 are the references used to
obtain information about the NAVOSH program.
Workcenter Your responsibility is to ensure the following takes place involving NAVOSH
Supervisor training:
Responsibilities
• Proper documentation.
• All hands participation.
• If personnel are absent, make-up the training ASAP.
• Screen training to ensure applicability to your shop.
• Ensure no gaps exist in training for your personnel.

Documentation Documentation for NAVOSH training is recorded on the OPNAV Form

4790/33 or equivalent form and filed in the Marines’ individual
qualification/certification record. The form below is an example of the
format used to document NAVOSH training requirements.

Challenge 1 Your squadron has been hit hard with operational commitments. A new
Marine reported to your workcenter 42 days ago but has not been afforded the
opportunity to receive indoctrination training in all the prescribed areas. Is
this allowable?
ANSWER – Yes. Indoctrination must be provided to personnel within 30

days of reporting, but may be extended to 60 days if operational commitments
or mitigating circumstances exist. See page 1-11.
Challenge 2 True or False. Follow-on training is required for all training.
ANSWER – False. Follow-on training is required for some, but not all
programs. See page 1-15.

Informal In-Service Training
Definition Informal in-service training also known as on-the-job-training (OJT) consists

of personnel performing maintenance tasks, by demonstration and simulation,
under the supervision of designated, qualified personnel.
The experienced person conducting the training acts like a coach providing
guidance while the trainee is performing the task, ensuring the task is taught
and performed properly.
Objective The trainee learns by seeing the job done and gains experience by
participating in the work.
Effects of OJT OJT is the heart and soul of maintenance personnel. OJT builds confidence
by enabling the Marine to
• See the mechanics of the equipment first hand

• Gain understanding of the feel and use of tools and test equipment
• Learn to read and understand maintenance publications in the actual
maintenance capacity
• Perform OJT at every opportunity
Components OJT encompasses maintenance tasks ranging from basic administrative duties
to complex aircraft/equipment testing, troubleshooting, and repair. Listed
below are the components needed for OJT:
• Maintenance task
• Applicable maintenance/instructional publication
• Tools/test equipment
• Experienced personnel for supervision

Informal In-Service Training, Continued
Workcenter Workcenter supervisor should ensure

Supervisor
Responsibility • All Marines have the proper OJT syllabus for their type/model/series
(T/M/S) and training along with proper documentation.
• All personnel conducting OJT are signed off level III on that task and
qualified to conduct this training.
• A thorough review of training and questioning of the Marine on the task is

a must before signing him/her off level III.
Documentation Document all maintenance-related tasks until the trainee is qualified/

proficient in that task. Requirements for documentation are listed below:
• OJT is documented only upon task completion.
• Once an individual is certified as proficient in a task (signed off level III),

OJT documentation for that task is no longer required.
• Record all training using the OPNAV Form 4790/33 or equivalent form
and file in the individual qualification/certification record. On the next
page is an example of an OJT documentation sheet.

Informal In-Service Training, Continued
OJT
Documentation
Sheet

Personnel
Incoming You must interview all incoming personnel and screen their individual
certification/qualification record for the level of completed training.
Screening The interview/screening process is used to determine
• Level of training completed

• Which training would benefit the new Marine
Departing Make sure all Marines leaving your workcenter take all their records and
qualification jackets with them to the next unit. If these items are left behind
or lost, the Marine may have to redo training that has already been completed.
This can result in unnecessary costs in man-hours and dollars to that unit.
Challenge 1 True or False. OJT should be performed when you see fit.
ANSWER – False. OJT should be performed at every opportunity. See page
1-20.
Challenge 2 A new Marine has just reported to your workcenter from his initial schooling
and fresh to the fleet. During his PCS from the schoolhouse, his MATMEP was
lost in the airport and is considered to be unrecoverable. Now there are no
records of the Marine’s training. In essence, as far as records go, that Marine
has had no training! As his workcenter supervisor, what action should you take
to fix the situation?
ANSWER – First, properly stress to the Marine the importance of keeping track
of his training records. Without them, he is without documented training and
can not work in the squadron or maintenance shop. After the Marine
understands the nature of his mistake, you must
• Initiate a new training record with all appropriate sections according to your
MOS.
• Call the schoolhouse to verify the Marine has had all the appropriate training.
• Make all appropriate documentation and initials.
Note: Since the opportunity has presented itself, turn this evolution into a
training class for all of your new Marines on proper MATMEP
documentation.

Individual Training Standards System Maintenance Training
Management and Evaluation Program
Purpose MCO P4790.20 Individual Training Standards System (ITSS) Maintenance

Training Management and Evaluation Program (MATMEP) is a
• Performance-based program, intended to satisfy all requirements for the

development of Individual Training Standards (ITS) per MCO 1553.1 and
to conform to the aviation maintenance training guidelines established in
OPNAVINST 4790.2
• Mechanism to standardize training within an MOS, integrate formal school

training with managed OJT, and ensure headquarters responsiveness to
Marine forces training requirements
Components The three components of the program
• ITS
• ITSS
• Documentation
ITS ITS measure job performance that identifies tasks and standards, which an
individual must perform in order for the mission to be accomplished.
ITSS
MATMEP ITSS MATMEP package consists of forms and records that will be inserted
into the individual’s ITSS MATMEP training jacket.
Documentation Documentation guidelines provide guidance to workcenter supervisors on

updating the individual Marine’s qualification/certification record on a
continuing basis.
Challenge SSgt Becker is a newly assigned workcenter supervisor. Although he has

documented training in individual certification/qualification, he wants to
review documentation procedures to ensure he is training his personnel
correctly on procedures. Which reference would SSgt Becker use as a
resource?
ANSWER - MCO P4790.20 Individual Training Standards System ITSS
Maintenance Training Management and Evaluation Program MATMEP. See
page 1-24.

Lesson 1 Exercise
Directions Complete exercise items 1 through 8 by performing the actions required.

Check your answers against those listed at the end of the exercise items.
Item 1 The purpose of the Maintenance Training Program is to establish policies,

responsibilities, and _____________ for implementing training within
aviation maintenance activities.
a. aircraft skills and proficiency

b. ability and proficiency
c. requirements
d. aptitude and proficiency
Item 2 You are assigned as workcenter supervisor and have questions involving
safety issues. Which one of the following manuals would you use to find
information involving this subject?
a. OPNAVINST 5200.21
b. OPNAVINST 5100.23
c. OPNAVINST 5200.23
d. OPNAVINST 5100.21
Item 3 As a workcenter supervisor, you are responsible for interviewing each

individual and reviewing the qualification/certification record
a. MEAP.
b. MATEP.
c. TDCP.
d. MATPO.
MCI Course 6002 1-25 Study Unit 1, Lesson 1 Exercise

Lesson 1 Exercise, Continued
Item 4 Through Matching: For items 4 through 8, match the training in column 1 with its
Item 8 definition in column 2.
Column 1 Column 2
Training Definition
____4. Formal In-Service a. OJT

____5. Indoctrination b. Safety training
____6. Follow-On c. Designed to familiarize
____7. NAVOSH d. When directed by higher authority
____8. Informal In-Service e. Consists of lectures and required reading

Solutions The table below lists the answers to the exercise items. If you have any
questions about these items, refer to the reference page.
Item Number Answer Reference

1 c 1-5
2 b 1-5
3 b 1-3
4 e 1-8
5 c 1-11
6 d 1-15
7 b 1-16
8 a 1-20
Lesson In this lesson, you learned about the dynamics of managing a MTP. In the
Summary next lesson, you will learn about the Technical Directive Compliance
Program.


LESSON 2
TECHNICAL DIRECTIVE COMPLIANCE PROGRAM
Introduction
Scope The Technical Directive Compliance Program (TDCP) was created to direct,
control, accomplish, and record modification changes to aircraft and
equipment. Commander, Naval Air System Command
(COMNAVAIRSYSCOM) issues Technical Directives (TD) that provide
technical information to properly and systematically inspect or alter the
configurations of aircraft engines systems or related equipment.
• Guidance needed as a workcenter supervisor to monitor the TDCP within

an aviation maintenance activity.
• Proper procedures for managing the TDCP within your workcenter.

Objectives
• Identify the purpose of the TDCP.
• Identify the references used to manage the TDCP.
• Identify the responsibilities of the workcenter supervisor in the TDCP.
• Identify the types of technical directives.
• Identify the categories of technical directives.

In This Lesson This lesson contains the following topics:
Topic See Page

Introduction 1-29
Purpose of the Technical Directive Compliance Program 1-31
References 1-32
Workcenter Supervisor Responsibilities 1-36
Types of Technical Directives 1-38
Technical Directive Categories 1-42
Technical Directive Routing and Tracking 1-47

Purpose of the Technical Directive Compliance Program
Purpose The TDCP establishes policies, procedures, and responsibilities for timely
and accurate incorporation of TDs.
Importance of A proper TDCP is paramount within the workcenter. The effects of TDs
the TDCP range from increased performance of the equipment to safety issues that could
cause loss of life and/or equipment if not corrected.

References
List Listed below are required references needed to manage a TDCP within your
workcenter:
• NAVAIR 00-25-300, Management and Procedures Manual

• OPNAVINST 8000.16, Naval Ordnance Maintenance Management
Program (NOMMP)

material.
NAVAIR 00- NAVAIR 00-25-300 establishes the policies, responsibilities, and procedures
25-300 for using TDs in support of Naval Aviation.
Management
and Procedures This instruction provides detailed instructions to implement the
Manual NAVAIRINST (Naval Air Instruction) 5215.12, and the Naval Air Systems
Command (NAVAIR) Technical Directives System.
It also supports the TD provisions of
• OPNAVINST 8000.16, Naval Ordnance Maintenance Management

Program (NOMMP)
• OPNAVINST 4790.2, Naval Aviation Maintenance Program (NAMP)

References, Continued
Aviation For the purpose of the NAVAIR 00-25-300, Management and Procedures
Systems Manual, the term “aviation systems” includes:
• Naval aircraft
• Airborne systems and system components
• Air launched weapons and munitions
• Aircraft launch and recovery systems
• Aviation support equipment
• Aviation training systems
• Computer hardware and software embedded in those aircraft, weapons,
systems and equipment
Scope and This instruction is applicable to all aviation systems procured by or for
Applicability NAVAIR, including items manufactured or procured by field activities and
inventory control points.
OPNAVINST OPNAVINST 8000.16, issues policies, procedures, and responsibilities for

8000.16, Naval activities supporting or performing ordnance maintenance.
Ordnance
Maintenance The objective of the NOMMP is to achieve and continually improve aviation
Program material readiness and safety standards established by the Chief of Naval
Manual
Operations (CNO) with the optimum use of manpower, material, and funds.

Introduction The purpose, definition, objectives, and methodology of the NAMP are
covered in Study Unit 1, Lesson 1, Maintenance Training Program. The
following information pertains to the TDCP within the NAMP.
References Your responsibility is to ensure your Marines follow proper procedures

involving the TDCP. This is crucial because, depending on the type of TD, it
could involve major changes to equipment on which maintenance is
performed. Strict adherence to the process is mandatory. Listed below are
references within the OPNAVINST 4790.2H in which you will find
information regarding responsibilities and guidance for a workcenter
supervisor.
• Volume V chapter 11 provides a list of minimum and mandatory

responsibilities of a workcenter supervisor when managing a TDCP.
• Volume III provides guidance in documentation of TDs in the

Maintenance Data System.

Responsibilities Listed below are the minimum responsibilities for managing the TDCP as per
the NAMP.
• Ensure the Technical Directive Program indoctrination and follow-on

training is conducted.
• Incorporate TDs upon receipt of Maintenance Action Forms (MAF), parts,

and kits from Maintenance Control.
• Ensure all TDs are documented on a MAF, per Volume III, upon
completion.
• Immediately inform Maintenance Control/Production Control (MC/PC)

and Quality Assurance (QA) in the event a TD cannot be incorporated
after it has been issued.
• Ensure all engines and engine components received are verified by Logs
and Records and Maintenance Administration (Marine Corps) for TD
configuration.
• Ensure all other equipment, for example, aviation life support systems
(ALSS), avionics, and support equipment (SE), received for use,
installation, or repair is verified for proper TD configuration.
These responsibilities will be covered in the next section.
Challenge True or False. OPNAVINST 4790.2H, Volume III provides a list of

minimum and mandatory responsibilities of a workcenter supervisor when
managing the TDCP.
ANSWER – False. OPNAVINST 4790.2H, Volume V, Chapter 11 provides

this information. See page 1-34.

Workcenter Supervisor Responsibilities
Introduction You are responsible for the proper incorporation of TDs within the prescribed
time period. Failure to comply could result in excessive down time for
aircraft and possible damage to equipment or injury to personnel if the TD is
in response to a safety concern.
Incorporation MC/PC will issue a Maintenance Action Form (MAF) to your workcenter for
of TDs incorporation of a TD.
• All parts, kits, and consumables should accompany the MAF. There may
be a lag time in the supply of these items with the supply chain.
• If these items are not received with the MAF, confirm with maintenance
control that the items have been ordered or reordered and inform QA.
• Do not incorporate the TD until all parts, kits, and consumables have been
received.
Documentation All documentation for TDs must follow the guidelines set forth in
OPNAVINST 4790.2H, Volume III, Chapter 6, titled Organizational Level
Maintenance Source Document Procedures, which gives procedures for this
documentation.
Work You may encounter work stoppages during an incorporation of a TD.

Stoppages Whenever this takes place, immediately inform Maintenance Control and QA.
Bag and tag all parts, consumables, and kits, then place them in the
appropriate aircraft or equipment bin for storage until the time comes for
work to resume.

Workcenter Supervisor Responsibilities, Continued
Receipt of Upon receipt of engines and engine components, confirm with maintenance
Engines and administration the verification for TD compliance. Failure to comply may
Engine result in removal of these installed components if they are not properly
Components configured, i.e. having wrong serial numbers, etc. This will cost unnecessary
man-hours, which could have been used on other maintenance tasks.
Receipt of All other equipment such as ALSS, avionics, and SE received for use,
Other installation, or repair must also be verified for proper TD configuration. If
Equipment not, the same circumstances apply to these items as for the engine and engine
components.

Types of Technical Directives
Introduction NAVAIR uses four types of TDs:
• Formal Change
• Interim Change
• Bulletin
• Rapid Action Minor Engineering Change (RAMEC)
Formal Change A formal change TD is the primary NAVAIR document for implementing a
configuration change. A formal change TD contains instructions and
information that directs accomplishments and recordings of a material
change, repositioning, modification, or an alteration in the characteristics of a
system. It shall be used to direct parts of material to be added, removed,
altered, relocated, or changed from an existing configuration.
Identification of A Formal Change TD is always identified by title as an “Airframe” Change

a Formal (AFC); “Avionics” Change (AVC), etc.
Change
NAVAIR 00-25-300A contains details concerning the preparation and
processing of Formal Change TD.
Interim Change Urgency sometimes requires change incorporations be initiated without delay,
following Configuration Control Board (CCB) approval. When an Interim
change TD is issued, a Formal Engineering Change Proposal (ECP) shall be
obtained within 180 days to permit a thorough review of all engineering and
logistic elements of the change. After the ECP review and approval, a Formal
change TD shall be issued to supersede the Interim Change.

Types of Technical Directives, Continued
Identification of Proposed changes are submitted to NAVAIR in message TD format, and after
an Interim approval is confirmed, the message is disseminated immediately. The TD
Change messages are designated “Interim Changes” (e.g., Interim Airframe Change
(IAFC), Interim Avionics Change (IAVC), etc.).
NAVAIR 00-25-300, Appendix B contains details concerning the preparation

and processing of Interim Technical Directives (ITD).
Challenge 1 Which type of TD is always identified by title as an “Airframe” Change

(AFC), “Avionics” Change (AVC), etc.?
ANSWER – Formal change. See page 1-38.
Bulletin A Bulletin TD directs a one-time inspection to determine if a given condition

exists and specifies what action shall be taken if the condition is found. A
Bulletin TD may contain instructions
• For corrective action using approved repair procedures, provided no

change in configuration is involved
• That may require issuance of a change TD to remedy a deficiency
Do not use bulletins in lieu of technical manual changes (e.g., to establish

continuing maintenance/inspection requirements).
Example You are to inspect all pitch control rods for a certain series of serial numbers.
Pitch control rods with this series of serial numbers have been found to be
defective. If found, remove and replace with proper pitch control rods.
Type of There are two types of bulletins:

Bulletins
• Grounding
• Flight restriction

Grounding Grounding bulletins restrict flight operations by requiring inspection on the

following conditions:
• Prior to further flight

• Next preflight, turn-around, or daily inspection
• Next equipment use
• Within the next 10 flight hours
Flight Flight restriction bulletins have significant operational impact due to either
Restriction imposed flight/operational limitations or severe/unique impact on logistic
support. Process flight restriction bulletins in the same manner as grounding
bulletins.
Identification of Bulletins are normally issued as naval messages but may be issued by a letter
a Bulletin (in message format) when enclosures are required.
References NAVAIR 00-25-300 Appendix C contains details concerning the preparation

and processing of Bulletin TDs.
RAMEC The concept of the RAMEC program is “fleet self-help.” Procedures are
designed to ensure
• Expeditious processing of minor engineering changes

• Incorporation is prompted by Organizational (O) and/or Intermediate (I)
level maintenance activities
• Commonality of configuration is practiced throughout the inventory

Proposed Proposed RAMECs are initiated by fleet activities, Fleet Support Teams
RAMEC’s (FST), or engineering activities in response to requirements identified by fleet
activities. Fleet activities must request RAMEC sponsorship from their
controlling custodians prior to prototyping one item. After successfully
prototyping a prospective RAMEC change, the proposed RAMEC TD will be
prepared and forwarded to the sponsoring controlling custodian for
processing.
NAVAIR FST may initiate and sponsor proposed RAMECs on items for
which they have primary cognizance, provided they accept responsibility for
coordinating related fleet support and obtaining concurrences from affected
type commanders/controlling custodians.
Identification of RAMECs are issued by naval messages or letters (in message format) as
a RAMEC change TDs (e.g., AFCs, AVCs).
NAVAIR 00-25-300 Appendix D contains details concerning the preparation

and processing of RAMEC TDs.
Challenge 2 What type of TD directs a one-time inspection to determine if a given

condition exists and specifies what action shall be taken if the condition is
found?
ANSWER - Bulletin TD. See page 1-39.

Technical Directive Categories
Introduction A TD shall be assigned one of the four categories listed below depending
upon its type, urgency, or purpose.
• Immediate Action
• Urgent Action
• Routine Action
• Record Purpose
The general criteria for assigning TD categories are discussed in the

following paragraphs.
Immediate The Immediate Action category is assigned when unsafe conditions exist
Action which, if uncorrected, could result in
• Fatal or serious injury to personnel

• Extensive damage to or destruction of valuable property
• Such conditions that embody risks, which are calculated to be
unacceptable
Urgency of The urgency of these TDs require immediate action to

Immediate
Action TDs • Ground aircraft
• Prevent launch of missiles
• Deny the use of related support equipment or munitions
Methods for correcting unsafe conditions are included in the Immediate

Action TD whenever possible. Assignment of this category shall be justified
by incident, accident, hazard, or similar reports, and must be concurred by the
CNO/CMC.

Technical Directive Categories, Continued
Compliance of Immediate Action TDs normally require compliance upon one of the
an Immediate following occurrences:
Action
• Prior to next flight
• Prior to the next use of equipment
• Within the next 10 flight hours
Urgent Action The Urgent Action category is assigned when unsafe conditions exist which,
if uncorrected, could result in the following occurrences:
• Personal injury
• Damage to valuable property
• Unacceptable reductions in operational readiness
• Safety or embody risks
These conditions are less serious than those for which the Immediate Action
category would be assigned.
Compliance of Urgent Action TDs require compliance within the specified time limits.
an Urgent Appropriate time limits for Urgent Category TDs expire when one of the
Action following occurs:
• Greater than 10 flight hours and not later than an appropriate scheduled
maintenance period (i.e., next phase or calendar inspection)
• Next “I” level induction
• Next scheduled depot-level maintenance period
• 18 months

Consequences If compliance is not accomplished by expiration of the specified time limit,

of Non- the following action is required.
compliance
• Ground aircraft
• Prevent launch of missiles
• Discontinue operation of
• Ground communications
• Electronic
• Meteorological equipment
• Discontinue use of
• Air-launched weapons support equipment
• Personnel equipment
• Materials
• Munitions
Challenge 1 What category requires downing of aircraft immediately?
ANSWER – Immediate Action category. See page 1-42.
Routine Action Assign the Routine Action category whenever the urgency of the situation
does not warrant assignment of Immediate or Urgent Action and the
assignment of Record Purpose is inappropriate. Assignment of Routine
Action is appropriate when conditions exist that embody degrees of risks
calculated to be acceptable within broad time limits.
Factors Governing factors for Routine Action include equipment or procedural

deficiencies of a material, mechanical, operational, or tactical nature. The
uncorrected existence of the governing factors could
• Constitute a hazard through prolonged use

• Have a negative effect on operational effectiveness or readiness
• Reduce tactical utility or supportability
• Reduce operational service life
Do not assign the Routine Action category to ITDs or Bulletins.

Purpose Routine Action TDs are issued to authorize retrofit changes and provide
detailed instructions for installing those changes. When attrition changes
require a TD, they will be assigned to the Routine Action category.
Compliance Routine Action TDs require compliance within the specified time limits.
Appropriate time limits for Routine Action TDs expire when one of the
following occurs:
• Next phase or calendar inspection

• Next “I” level induction
• Next scheduled Depot level maintenance period
• 36 months
Record Purpose Assign the Record Purpose category to Formal Change TDs issued to
document configuration changes that have been incorporated in all affected
equipment by the change designer/originator before the TD is issued.
Restrictions The following restrictions apply to assignment of the Record Purpose

category:
• TDs issued to supersede and formalize ITDs may not be Record Purpose.
• Bulletins, ITDs, RAMECs and other message TDs may not be assigned
the Record Purpose category.
• Restricted to Formal Change TDs and when the period for change
incorporation in all affected systems is 12 months or less.
Documentation of Type Commander (TYCOM) concurrence shall be

provided prior to assignment of the Record Purpose category.

Challenge 2 What type of TD category would be assigned if deficiencies of a material,

mechanical, operational, or tactical nature, the uncorrected existence of which
could constitute a hazard through prolonged use?
ANSWER - Routine Action category. See page 1-44.

Technical Directive Routing and Tracking
Introduction Quality Assurance will issue a TD Routing and Tracking Sheet for all TDs to
track compliance. The following form shows the TD Routing and Tracking
Sheet.

Technical Directive Routing and Tracking, Continued
Introduction,
continued

Lesson 2 Exercise

Check your answers against those listed in the exercise solution table.
Item 1 The purpose of the TDCP is to establish policies, procedures, and

responsibilities for timely and accurate incorporation of
a. aircraft log books.

b. technical manuals.
c. personnel training.
d. technical directives.
Item 2 One of your Marines comes to you with a question about documentation
codes on the MAF concerning a technical directive. You know the answer,
but want the Marine to develop his own skills. Which of the following
references would be the best source for him to research?
a. OPNAVINST 5100.23
b. OPNAVINST 4790.2H VOL III
c. OPNAVINST 4790.2H VOL V
d. OPNAVINST 2710.14

Item 3 You have just been given a TD to inspect all helicopter blades for a series of
serial numbers. Blades with this series of serial numbers have been known to
be defective. What are the appropriate actions to be taken as workcenter
supervisor?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
Item 4 Upon receipt of engines and/or engine components, you must first confirm the
items are verified for TD compliance with
a. avionics.
b. maintenance administration.
c. tool room.
d. airframes.

Item 5 Technical directives are separated into four different types: Formal Change,
Interim Change, Bulletin, and
a. BAMSIS.
b. RAMEC.
c. MAFS.
d. PHASE.
Item 6 Technical directives are separated into four different categories: Immediate
Action, Record Purpose, Routine Action, and
a. Non-compliance.
b. Cancellation Action.
c. Urgent Action.
d. Re-issue Action.

Item Number Answer Reference

1 d 1-31
2 b 1-34
3 See block below 1-36-37
4 b 1-37
5 b 1-38
6 c 1-42
Item 3 Scenario As in any TD, you should always verify authenticity with QA and
Answer Maintenance Control before incorporation. Upon verification of authenticity,
you must
• Check with aircraft Logs and Records for any matching serial numbers.
• Verify findings on the aircraft.
• If no matching serial numbers are found, sign the MAF (following proper
procedures) as completed and forward to QA/Maintenance Control.
• If matching serial numbers are found, incorporate TD as per instructions

following all the proper safety and maintenance procedures.
• Sign the MAF (following proper procedures) as completed and forward to

QA and MC/PC.
Note: Just because Logs and Records indicates no matching serial numbers,
does not mean the aircraft does not have blades with those serial
numbers. Serial number mistakes happen. Never take for granted that
the records and the aircraft match 100% of the time.
Lesson In this lesson, you learned about the dynamics of managing a TDCP. In the
Summary next study unit, you will learn about Safety Oriented Programs.

STUDY UNIT 2
SAFETY ORIENTED PROGRAMS
Overview
Content Although there are many other programs that can be considered safety
programs, this study unit will provide you with the guidance needed to
monitor the most common programs used in the capacity of an aviation
workcenter supervisor. Reference the manuals and publications that cover
such topics for more in-depth information.
Scope The programs included in this study unit concern not only the personnel who
work in the aviation community, but also the use of equipment and aircraft.
Many times, when people think of the aviation community, they first think of
the Marines who fly in the aircraft. However, what most people do not
consider are the extensive ground crews and maintenance personnel involved
in keeping the aircraft flying. Many believe that all the aircrew does is fly in
the aircraft, however, nothing could be further from the truth. The aircrew
performs maintenance before and after the flight.
Safety of your personnel is paramount to mission accomplishment. By

monitoring and managing programs that concern the overall condition of the
equipment and aircraft, you are in turn ensuring the safety of your Marines.
This applies not only to the aircrew who fly, but the ground personnel as well.
In this Study This study unit contains the following lessons:

Unit
Topic See Page

Fuel Surveillance Program 2-3
Navy Oil Analysis Program 2-27
Aviation Breathing Oxygen Surveillance 2-49
Hydraulic Contamination Control Program 2-75
Tire and Wheel Maintenance Safety Program 2-121
Foreign Object Damage Program 2-149
Hazardous Material Control and Management Program 2-169
Electrostatic Discharge Program 2-195
Miniature/Microminiature Program 2-215


LESSON 1
FUEL SURVEILLANCE PROGRAM
Introduction
Scope The Fuel Surveillance Program applies to all Marine Corps aircraft, engines,
and test cells. Proper fuel surveillance prevents the harmful effects of fuel
contamination, which include
• Erratic or incorrect fuel quantity indications

• Fuel system icing
• Damage to engines and fuel system components
Content This lesson will provide you the
• Guidance needed as a workcenter supervisor to monitor the Fuel

Surveillance Program within an aviation maintenance activity.
• Proper procedures for managing a Fuel Surveillance Program within your

workcenter.

Objectives
• Identify the purpose of the Fuel Surveillance Program.
• Identify the references used to manage the Fuel Surveillance Program.
• Identify the responsibilities of the flightline workcenter supervisor in the

Fuel Surveillance Program.
• Compare and contrast the fuel sampling procedures for aircraft and test
cells.
• Identify the types of fuel cell and tank contaminates.

Topic See Page

Introduction 2-3
Purpose of the Fuel Surveillance Program 2-5
References 2-6
Indoctrination and Follow-on Training 2-10
Safety Procedures/Precautions 2-11
Performing Fuel Samples 2-13
Aircraft Fuel Sampling Procedures 2-14
Test Cell Fuel Sampling Procedures 2-15
Aircrew 2-16
Contaminated Fuel Samples 2-17
Types of Contamination 2-18
Fuel Sample Locker 2-20

Purpose of the Fuel Surveillance Program
Introduction The purpose of the Fuel Surveillance Program is to establish policies,

responsibilities, and requirements for implementing procedures to maintain a
satisfactory level of aircraft and engine fuel systems purity.
Scope This program is essential to proper performance of all aviation equipment that
uses aviation fuels of any type. If left unchecked, contamination can result in
serious damage to equipment/aircraft fuel systems. This program outlines
proper procedures ranging from performing fuel samples to preservation of
fuel systems.

References
List of Listed below are required references needed to manage a Fuel Surveillance
Reference Program within your workcenter:
• NAVAIR 01-1A-35, Aircraft Fuel Cells and Tanks

• NAVAIR 00-80T-109, Aircraft Refueling NATOPS Manual
• NAVAIR 15-01-500, Preservation of Naval Aircraft

material.
NAVAIR This Maintenance Instruction Manual (MIM) provides information for the
01-1A-35, Organizational, Intermediate and Depot Maintenance of Naval aircraft fuel
Aircraft Fuel cells and tanks.
Cells and
Tanks It is divided into 14 sections that cover a wide range of information involving
fuel cells and aviation fuels. Section III is a good source of general
information involving the prevention of contamination to fuels and fuel cells.
NAVAIR This manual covers the technical requirements, operational procedures and
00-80T-109, personnel training for ready-issue (retail) aviation fuel operations. Ready
Aircraft issue fuel operations include fuel receipt, short-term storage (usually a 10-day
Refueling supply of fuel for the specific activity), transfer, and dispensing to aircraft.
NATOPS
Manual
A broad range of topics and procedures involving aviation fuels are included
within this manual. This is beneficial to you as a workcenter supervisor for
understanding the complex procedures involving the quality and deliverance
of aviation fuels both shipboard and ashore.
NAVAIR This manual presents factors that must be considered for the protection of
15-01-500, aircraft during periods of inactivity or shipment, and provides preservation
Preservation of procedures that will afford this protection. Preservation instructions included
Naval Aircraft have been tried and proved practical, necessary, and adequate for protecting
aircraft against deterioration. Chapter 5, section VII contains the preservation
procedures involving fuel cells.

Challenge True or False. NAVAIR 01-1A-35, Aircraft Fuel Cells and Tanks, outlines
the procedures for preservation of Naval aircraft.
ANSWER – False. The NAVAIR 15-01-500, Preservation of Naval Aircraft

outlines these procedures. See page 2-6.

OPNAVIST The purpose, definition, objectives, and methodology of the NAMP are
4790.2H NAMP covered in Study Unit 1, Lesson 1, Maintenance Training Program. The
following information pertains specifically to the Fuel Surveillance Program
within the NAMP.
Responsibilities As workcenter supervisor, you must ensure all your Marines adhere to the
of the procedures outlined in OPNAVINST 4790.2H. Without this, serious damage
Workcenter to fuel systems by contaminated fuel may cause system failures with results
Supervisor ranging from downing of aircraft and equipment to loss of life.
OPNAVINST 4790.2H, Volume V, chapter 3 provides a list of
responsibilities as a workcenter supervisor in monitoring this program. As
stated in the previous lessons, these are the minimum requirements. You
should always strive to exceed the minimum requirements for any task in a
supervisory position.
Responsibilities Listed below are the minimum responsibilities for managing the Fuel
of Flight Line Surveillance Program as per the NAMP.
Workcenter
Supervisors • Ensure the Fuel Surveillance Program indoctrination and follow-on
training is provided to personnel.
• Training shall include personnel responsibilities and shall be documented

on the NAMP Indoctrination Training sheet (see Study Unit 1, Lesson 1,
Maintenance Training Program) in the individual's qualification/
• Ensure only properly trained personnel perform fuel sampling.
• Ensure personnel adhere to all procedures and safety precautions.
• Ensure contaminated samples are retained for inspection by a Quality

Assurance Representative (QAR) or Flight Line Collateral Duty Quality
Assurance Representative (CDQAR).

Responsibilities • Initiate a downing discrepancy when abnormal amounts of water or

of Flight Line contaminants are present during sampling.
Workcenter
Supervisors,
• Ensure adequate supplies of authorized sampling equipment and Personal
continued
Protective Equipment (PPE) are on hand.
Responsibilities Listed below are the minimum responsibilities for power plants and test cell
of Power Plants supervisors in managing a Fuel Surveillance Program as per the NAMP.
and Test Cell
Workcenter • Ensure integrity of fuel systems during routine maintenance, including
Supervisors
covers/caps on open or removed fuel cells, lines, and components.
• If contamination is present, assist QA in conducting an immediate

investigation of the aircraft/test cell fuel system and components to
determine the source of contamination.
• Refer to the Naval Aviation Maintenance Program Standard Operating

Procedures (NAMPSOP) and Type/Model/Series (T/M/S) Naval Air
Training and Operating Procedures Standardization (NATOPS) for
possible specific gravity and minimum flow setting adjustment if
aircraft/test cells have been serviced with fuels other than JP-5.
• Ensure non-ready-for-use (NRFI) and inactive fuel cells and tanks are
properly preserved and protected against contamination.

Indoctrination and Follow-on Training
Introduction Indoctrination training shall be provided to all personnel involved with

aviation fuel and/or equipment. Follow-on training shall be provided as
required.
Scope Tailor indoctrination training to the specifics of the maintenance that your
personnel will be performing. This training shall include, but not limited to
• All personal protective equipment PPE

• Any associated consumables and/or gear
• All tools to be used during the maintenance
• Storage and safe handling of aviation fuels/samples
• Safety hazards involving inhalation of fuels
• All maintenance publications to be referenced
Reference References involving aviation fuels are too numerous for your Marines to
Publications truly understand in depth. Therefore, as in all other indoctrination, it should
be tailored to familiarize your Marines in this program and not make them
experts.
Training The training requirements and associated forms for indoctrination training are
Requirements outlined in Study Unit 1, Lesson 1, Maintenance Training Program.
Challenge True or False. A downing discrepancy is not necessary when abnormal

amounts of water or contaminants are present during sampling.
ANSWER – False. If abnormal amounts of water or contaminants are present

during sampling, you must initiate a downing discrepancy. See page 2-9.

Safety Procedures/Precautions
Introduction There are many precautions that must be recognized when taking fuel samples
on aircraft. This process is much more involved than just draining fuel from a
tank into a jar. Safety is paramount when your Marines are performing
maintenance of any kind.
Personal As a workcenter supervisor, you must ensure all Personal Protective

Protective Equipment (PPE) is in good working order and there is an adequate amount
Equipment on hand. Otherwise, if equipment does not work or there is not enough for all
personnel, they will not be in the habit of using it. This does not mean you
should have enough safety equipment in your shop to supply an entire aircraft
group. Have enough on hand to equip your Marines adequately in order to
accomplish the job safely and efficiently.
Your personnel may want to take shortcuts because of operational tempo and
heavy maintenance schedules. They may not wear gloves and or goggles
while performing fuel samples. If you see this, you must stop them
immediately and make them use the proper PPE. Never accept any excuses
like, "It's ok, I'm only doing this one tank," or "Leave the Marine alone--he's
getting the job done." It is your responsibility as that Marine’s senior to
require them to adhere to all safety procedures. It is better to follow proper
procedures and be the “bad guy.” Or would you rather justify to the
command why you did not train your Marines properly and make them follow
proper PPE procedures, which resulted in injuries?
Situational Your Marines must be aware of their environment--whether the aircraft is

Awareness positioned on the flight line or onboard ship, aircraft turning in the area, etc.
Being on the flight line has its own inherent dangers, especially on the flight
deck of a ship. Just because a Marine is performing fuel samples, does not
mean he/she is immune to these dangers. This is also where the PPE comes
into play. It is your responsibility to ensure they are prepared for whatever
situation may arise.

Safety Procedures/Precautions, Continued
Scenario You inform one of your Marines that fuel samples have to be taken on an
aircraft that is going on a flight in 2 hours. You state, “Let’s get it done, this
aircraft has to be signed off Safe For Flight!” You assume that he knows
what he is doing because he has been in the shop for a few months and he has
all the tools to perform the job. You also assume PPE is not an issue, that
there is enough available, and that the Marine who has that collateral duty is
responsible. The Marine grabs his gear, walks out of the hatch on the flight
deck of the ship towards the aircraft with bucket, toolbox, and jars.
While performing the fuel sample, the Marine can not see through his goggles
because they are scratched and dirty, so he takes them off. Not paying
attention to his environment, he does not take into consideration that there is a
helicopter turning a few spots away. He should not be performing fuel
sampling on the flight deck during flight-ops anyway. The helicopter takes
off and creates sufficient wind to blow the fuel into his eyes.
Remember, you assumed he had all of the right tools for the job. Well, he
does not. He uses a 12-inch screwdriver that allows sufficient space between
the top of the jar and the bottom of the tank for the wind to blow the fuel into
his face. When this takes place, his first reaction is to jerk his hands towards
his face to cover his eyes. Doing this, he forces the screwdriver upward
jamming the tank drain open. Now, not being able to see, he stumbles and
trips over one of the tie-down chains for the aircraft. Falling to the ground, he
tries to break his fall with his hands. Good, right? Not if he still has the jar in
his hands. As his hands hit the deck, the jar breaks and slices his hand open.
Now because of your inattention to the details and assumptions towards

safety, one of your Marines has injured himself severely, fuel is spilling all
over the deck of the ship, this aircraft has to fly in 2 hours--and all this during
flight-ops.
Impossible? Worst-case scenario? Try again. This actually took place on a

MEU in South-East Asia. Never assume anything when it comes to the safety
of your Marines or their training.

Performing Fuel Samples
Scope Condensation of moist air can introduce small amounts of free water in empty
or partially filled fuel cells and tanks. Microbiological organisms can grow if
free water is present. Also, particulate matter contamination may be
generated within fuel cells/tanks and lines or be introduced during
maintenance.
As a precaution against fuel contamination, aircraft maintenance personnel

and test cell operators must inspect for water and foreign matter in fuel
cells/tanks on a scheduled basis.
The following pages will outline the procedures for fuel sampling on aircraft
and test cells as per OPNAVINST 4790.2H.

Aircraft Fuel Sampling Procedures
Sampling Fuel sample intervals are listed in aircraft T/M/S Maintenance Requirements
Requirements Cards (MRC). A fuel sample shall be taken within 24 hours preceding the
aircraft’s initial launch. No sample shall be valid for more than 24 hours.
Too many things can happen in 24 hours that can cause fuel contamination.
Minimum Listed below are the minimum requirements for performing aircraft fuel
Requirements samples on aircraft for which no specified fuel sampling procedures are
outlined.
• Allow maximum possible time for water and solids to settle before
sampling on an aircraft moved or refueled. Whenever operating
conditions permit, allow aircraft a minimum of 2 hours settling time.
• Wear PPE, including chemical-resistant gloves and goggles, while taking,

handling, and disposing of fuel samples.
• Take fuel samples from all fuel cell/tank low point drains, including
auxiliary, removable, and in-flight refueling tanks (approximately one pint
from each low point drain).
• A qualified aircrew, shift supervisor, Collateral Duty Inspector (CDI),
Flight Line Collateral Duty Quality Assurance Representative (CDQAR),
or Quality Assurance Representative (QAR) shall visually inspect all fuel
samples for a clear and bright appearance per NAVAIR 00-80T-109 by
swirling and checking directly under the swirl vortex for any discoloration,
water, cloudiness, or sediment. If contaminants are present, retain sample,
drain approximately 1 gallon of fuel into bucket or other suitable
container, and take another sample. If the second sample is contaminated,
immediately notify Maintenance Control and give both samples to QA for
inspection.
• Initiate a downing discrepancy if a satisfactory sample is not achieved

after the second sample.
• Empty and clean sample bottles after each use.
• Dispose of fuel per local HAZMAT procedures.
As the workcenter supervisor you must ensure these requirements, as well as

the procedures for test cell fuel sampling, are strictly adhered to.

Test Cell Fuel Sampling Procedures
Introduction The fuel sampling procedures for test cell fuel sampling closely mirror
aircraft fuel sampling with some slight differences. The same safety and PPE
procedures apply.
Minimum Listed below are the minimum requirements for performing test cell fuel
Requirements samples.
• Take fuel samples from all fixed and portable engine test stands fuel cells,
tanks, and accumulators.
• Take fuel samples prior to first engine run of the day, or weekly as a
minimum.
• Wear PPE, including chemical-resistant gloves and goggles, while taking,

handling, and disposing of fuel samples.
• Drain/draw samples from lowest possible point below the fuel pickup
point.
• Draw approximately one pint of fuel for each sample using a one-quart,
clear, clean glass or polyethylene container.
• Inspect samples for contamination by swirling and checking directly under

the swirl vortex for any discoloration, water, cloudiness, or sediment. If
contaminants are present, retain the sample, drain/draw approximately 5
gallons (but not more than 10 gallons) of fuel from the low point and take
another sample. If more than 10 gallons are drained to achieve a
satisfactory sample, the fuel tank shall be de-fueled and cleaned. Notify
Maintenance Control and QA immediately.
• A qualified shift supervisor, CDI, CDQAR, or QAR shall visually inspect

all fuel samples for a clear and bright appearance with no visible
water/sediment per NAVAIR 00-80T-109. Initiate a downing discrepancy
if a satisfactory sample is not achieved after the second sample.
• Empty and clean sample bottles after each use.
• Dispose of fuel per local HAZMAT procedures.

Aircrew
Introduction As stated previously in this lesson, aircrews are also responsible for the
maintenance of the aircraft they fly in. This includes conducting fuel samples
of the aircraft prior to flight. Sometimes the ground crews will perform the
sampling, but the aircrew must be versed in the procedures and inspection
process to verify the results prior to flight and to perform the sampling if need
be.
Aircrew Listed below are the minimum responsibilities for aircrew involving fuel
Responsibilities sampling procedures.
• Accomplish fuel sampling per NAVAIR 01-1A-35, MIMs, MRCs, or

applicable Air Force, Army, or FAA approved equivalents when away
from home.
• Be thoroughly familiar with fuel sampling requirements/procedures and

contamination identification prior to any flight that may require refueling
or fuel sampling without maintenance personnel available. Aircrew, prior
to commencing helicopter in-flight refueling operations, must be trained to
perform inspection of fuel samples per NAVAIR 00-80T-109.
• Be thoroughly familiar with approved emergency fuels and limitations

regarding interchangeability of fuel types and grades.
• Notify Maintenance Control/Production Control when fuel other than JP-5

has been used or fuel specific gravity setting has been adjusted.
• Ensure adherence to limitations on interchangeability of various grades

and types of fuel. Approved (primary and alternate) and emergency fuels
are listed in the applicable NATOPS or flight handbooks.
Challenge True or False. Aircrews never perform fuel samples.
ANSWER – False. The aircrew is also responsible for the maintenance of the
aircraft they fly. This includes conducting fuel samples. See page 2-16.

Contaminated Fuel Samples
Introduction If as a result of fuel sampling, you find abnormal amounts of contaminated

samples, you shall immediately notify QA or CDQAR to verify the results.
This will assist in the investigation as to how the contaminates were
introduced to the fuel system.
Results of If an abnormal amount of contamination is found during sampling and QA

Contaminated has verified the results, a downing discrepancy or a down bench report must
Fuel be initiated on the aircraft or equipment. This will prevent the aircraft or
equipment from being operated. If this is not done, damage to the equipment
or loss of aircraft due to engine failure could result.
Disposal of Fuel Contaminated or clean fuel samples must be disposed of as per HAZMAT
Samples procedures. Do not leave fuel in the jars when returning the fuel sample kits
to the locker. All jars must be drained and wiped clean with lint-free rags.
The rags must be disposed of in the HAZMAT site after being used.

Types of Contamination
Introduction Aircraft fuel systems are complex and will not function if contaminated with
particulate matter, water, mixed fuel or microorganisms. These types of
contaminations are described in the following paragraphs.
Particulate Particulate matter contamination is usually caused by the following:

Matter
Contamination • Iron-rust and scale
• Sand
• Airborne dirt
Effects of The presence of large amounts of particulate matter in fuel results in

Particulate
Matter • Restricting or clogging filter/coalescer elements
Contamination
• Silting and plugging fuel control units and nozzles
• Scoring and wear of fuel system components by abrasion
Particulate matter settles much slower in jet fuels than in aviation gasoline.
Water Water is a most common contaminant of fuels. Refueling personnel will be

concerned with it in two forms entrained water and water slugs.
• Entrained water is found in fuels in the form of very small droplets, fog, or
mist. It may or may not be visible. Water usually becomes entrained in
the fuel when it is broken up into small droplets and thoroughly mixed
with the fuel in equipment such as pumps or meters.
• Water slugs are quantities of water, which do not mix with the fuel but are
carded with the fuel as liquid water. This water enters cells or pipelines
through fill lines, vents, cell openings, condensation, etc., and accumulates
in cells or equipment, where it is picked up by pumps and carded as water
slugs.

Types of Contamination, Continued
Mixed Fuel The mixing of fuels is usually caused by poor or careless operation of the fuel
handling equipment and facilities. All personnel must know and remember
that small quantities of one fuel can seriously contaminate and render
unusable another aircraft fuel.
Micro- Bacteria and fungi are present in most jet engine fuels. These are common
Organisms microorganisms that find their way into fuel storage tanks and aircraft fuel
systems because of dirt and water contamination. Microorganism
contamination usually appears as a brown slime-like deposit that adheres to
the inner surfaces of fuel cells. This results in corrosion of fuel cells,
clogging filters, and erratic operation of fuel quantity indicating systems.
Generally, microbiological contamination of jet fuels is most severe in
tropical climates where temperature and humidity is high. Some of the most
common sources of such fuel supply contamination are
• Fuel storage tanks that contain water in bottoms that cannot be completely
drained
• Floating roof tanks that allow the entry of rainwater and airborne dust
• Contaminated water let into storage tanks from pipeline water slugs
• Fuel contaminated during transport in tankers and barges ballasted with

water
• Previously contaminated fuel being de-fueled from aircraft into storage

tanks
Challenge True or False. Entrained water is found in fuels in the form of very small
droplets, fog, or mist, and may or may not be visible.
ANSWER – True. See page 2-18.

Fuel Sample Locker
Introduction The fuel sample locker holds all material and gear associated with performing
fuel samples. The tools involved are accounted for and stored separately in
the tool room.
Contents of the The fuel sample locker should contain, as a minimum, the following items:
Fuel Sample
Locker • Fuel sample kit for each aircraft or piece of equipment within your unit.
Your kit should have a strap for carrying and include 1 jar w/lid for each
point of sampling
• Pair of chemical-resistant gloves and goggles for each fuel sample kit
• Sufficient amount of lint-free rags to accommodate all fuel sample kits
• Logbook
Location of The fuel sample locker should be located in the HAZMAT site. Fuel has
Fuel Sample properties that present dangers if left unattended, can cause ground
Locker contamination or come in contact with an ignition source. Fuel soaked rags
have been known to spontaneously combust if left piled up and in the sun.
The HAZMAT site has precautions in place to sufficiently accommodate the
fuel locker and if followed, will eliminate these dangers.

Lesson 1 Exercise
Directions Complete exercise items 1 through 7 performing the actions required. Check
your answers against those listed in the exercise solution table.
Item 1 The purpose of the Fuel Surveillance Program is to establish policies,

____________ level of aircraft and engine fuel systems purity.
a. reasonable
b. satisfactory
c. pretty good
d. above average
Item2 In which of the following references would you find information involving
preservation of fuel cells/tanks.
a. OPNAVINST 4790.2H, Naval Aviation Maintenance Program

b. NAVAIR 01-1A-35, Aircraft Fuel Cells and Tanks
c. NAVAIR 00-80T-109, Aircraft Refueling NATOPS Manual
d. NAVAIR 15-01-500, Preservation of Naval Aircraft
Item 3 The workcenter supervisor is responsible for ensuring the fuel surveillance
program indoctrination and _________ training is provided to personnel.
a. university
b. instructional
c. on-the-job
d. follow-on

Item 4 Compare the fuel sampling procedures for aircraft with the sampling
procedures for test cells. How are the procedures alike? How are they
different? Write your answers below.
How are they alike?
(1)____________________________________________________________
(2)____________________________________________________________
(3)____________________________________________________________
(4)____________________________________________________________
(5)____________________________________________________________
How are they different?

For aircraft:
(1)____________________________________________________________
(2)____________________________________________________________
For test cells:
(3)____________________________________________________________
(4)____________________________________________________________

Item 5 Compare the aircraft fuel sampling procedures with the sampling procedures
for test cells. Which of the following is required by both procedures?
a. Fuel samples are to be taken bi-weekly as a minimum.

b. A qualified shift supervisor, CDI, CDQAR, or QAR shall visually inspect
the fuel sample.
c. Take fuel samples from the highest point above the fuel pickup point.
d. Initiate a downing discrepancy if a satisfactory sample is not achieved
after the first try.
Item 6 Compare the aircraft fuel sample procedures with the sampling procedures for
test cells. Which of the following is required for aircraft, but not for test
cells?
a. Allow a minimum of 2 hours settling time.

b. Wear PPE including chemical-resistant gloves and goggles.
c. Empty and clean bottles after use.
d. Dispose of fuel per HAZMAT procedures.
Item 7 Particulate matter, water, mixed fuel, or ________ are the four basic types of
fuel contaminants.
a. sand
b. water slugs
c. microorganisms
d. JP-5

Item Answer Reference

1 b 2-5
2 d 2-6
3 d 2-8
4 How are they alike? 2-14&15
For both aircraft and test cells, the following are
required:
(1) PPE is required including chemical resistant
gloves and goggles.
(2) Qualified shift supervisor, CDI, CDQAR, or
QAR must visually inspect fuel samples.
(3) If second sample is contaminated, Maintenance
Control and QA must be notified.
(4) Downing discrepancy is initiated if a
satisfactory sample is not achieved after the
second sample.
(5) Dispose of fuel per HAZMAT procedures.
How are they different?

For Aircraft:
(1) Must allow aircraft a minimum of 2 hours
settling time.
(2) Fuel samples are taken from each low point (one
pint).
For test cells:
(3) Fuel samples are taken from all fixed and
portable engine test stand fuel cells, tanks and
accumulators.
(4) Fuel samples are taken prior to the first engine
run of the day, weekly as a minimum.
5 b 2-14
6 a 2-14
7 c 2-18

Lesson In this lesson, you learned how to manage/monitor the Fuel Surveillance
Summary Program within your workcenter. In the next lesson you will learn about the
Navy Oil Analysis Program (NOAP).


LESSON 2
NAVY OIL ANALYSIS PROGRAM
Introduction
Scope Oil analysis diagnostic programs are used to determine the condition of in-use
oil and other fluids. The detection of wear metals and other contaminants aid
in identifying early wear and predict or prevent failure of mechanical
equipment.
• Guidance needed as a workcenter supervisor to monitor the Navy Oil

Analysis Program (NOAP) within an aviation maintenance activity.
• Proper procedures for managing a NOAP within your workcenter.

Objectives
• Identify the purpose of the NOAP.
• Identify the references used to monitor the NOAP.
• Identify the responsibilities of the workcenter supervisor in the NOAP.
• Identify the different types of oil contamination.
• Identify the different oil sampling techniques.
• Identify the different types of oil samples.

Topic See Page

Introduction 2-27
Purpose 2-29
References 2-30
Oil Sample Kit Locker 2-33
Sampling Techniques 2-36
Special Precautions 2-39
Types of Oil Samples 2-41
Documentation 2-43

Purpose
Introduction The purpose of the NOAP is to establish policies, responsibilities, and

requirements for monitoring equipment condition in an effort to detect
impending failures without equipment removal or extensive disassembly.
It provides Navy and Marine Corps aviation activities the guidance necessary
to achieve the required performance, efficiency, and logistical support by
establishing policy for integrated oil analysis requirements.
Combined The Joint Oil Analysis Program (JOAP) is a combined Navy, Marine Corps,
Effort Army, and Air Force effort, designed to ensure timely and accurate oil
analysis support, by strategically locating oil analysis laboratories, while
standardizing procedures and equipment.
Aspects All aspects of oil servicing, documentation, and trend analysis are critical to
flight.

References
List Listed below are required references needed to monitor a NOAP within your
workcenter:
• OPNAVINST 4731.1, Joint Oil Analysis Program (JOAP)

• NAVAIR 17-15-50.1/2/3, Joint Oil Analysis Program Manual
Note: References nomenclatures will periodically change due to updates and

material.
JOAP The OPNAVINST 4731.1 is an instruction for the implementation of the

NOAP and JOAP. It provides policy and guidance as well as assigns
responsibilities to ensure effective and efficient use of these programs with
the Naval Air System Command (NAVAIR).
JOAP Manual The NAVAIR 17-15-50 is broken into four separate volumes. The volumes
which pertain to you as per the NAMP are Volumes I, II and III.
• Volume I clarifies the use of oil analysis as a diagnostic maintenance tool,

standardizes JOAP operating procedures, and provides general guidance
for JOAP managers and customers in accordance with the Tri-Service
Regulation (AFR 400-68/AR700-132/OPNAVINST 4731.1).
• Volume II contains specific JOAP laboratory operating procedures and

guidance.
• Volume III and IV contain the JOAP equipment wear metal criteria
listings, trend tables and decision making guidance for laboratories in
evaluating oil sample analysis results in order to determine required
action. Both volumes pertain to aeronautical and non-aeronautical
equipment, respectively.

NAMP The purpose, definition, objectives, and methodology of the NAMP is

following information pertains to the NOAP within the NAMP.
Workcenter Listed below are the minimum responsibilities for managing the NOAP as per
Supervisor the NAMP.
Responsibilities
• Ensure NOAP indoctrination, follow-on training, and lubrication systems
training (to include proper servicing and documentation procedures) are
provided to personnel.
• Training shall include personnel responsibilities and shall be documented

on the NAMP Indoctrination Training sheet (see Study Unit 1, Lesson 1,
Maintenance Training Program) in the individual's
qualification/certification record.
• Coordinate with the NOAP Manager to ensure an adequate supply of oil

sampling kits are available.
• Ensure oil-servicing units are maintained free of contamination.
• Conduct oil sampling/servicing per applicable Naval Aviation

Maintenance Program Standard Operating Procedures (NAMPSOP) and
Maintenance Requirement Cards (MRC).


aviation lubricants and/or equipment. Follow-on training will be provided as
required.
Workcenter Tailor indoctrination training to the specifics of the maintenance that your
Specific personnel will be performing. This training shall include, but not be limited
to
• All personal protective equipment (PPE)

• Storage and safe handling of aviation lubrications/samples
• Safety hazards involving ingestion and absorption of lubricants
Reference References involving aviation lubricants are too numerous for your Marines
Publications to truly understand in depth. Therefore, as in all other indoctrination, it
should be tailored to familiarize your Marines in this program and not make
them experts.
Requirements outlined in Study Unit 1, Lesson 1.

Oil Sample Kit Locker
Introduction The oil sample kit locker holds all material and gear associated with
performing oil samples. The tools involved are accounted for and stored
separately in the tool room.
Authorized Kits Some workcenters do not perform enough oil samples to justify having an oil
sample kit locker. These shops will go to the program manager in the
maintenance activity to get supplies as needs dictate. Other shops, such as a
flight line shop, should have a locker and a Marine assigned with the
collateral duty of maintaining the supplies. This not only assists the work
center but also gives that younger Marine a feeling of responsibility.
Contents An oil sample kit locker contains
• One oil sample kit for each aircraft or piece of equipment within your unit.
The kit must contain the proper amount of jars, padded bags, paperwork,
and straws to perform the sampling for that type of aircraft/equipment.
• Sufficient amount of lint-free rags to accommodate all oil sample kits.
Location Unlike the fuel sample locker, the oil sample kit locker does not need to be
located in the HAZMAT site. Do not store hazardous materials in the locker.
Store only the kits and consumables needed to perform the oil sample. Place
the locker in the maintenance shop that performs the majority of the oil
samples within the maintenance activity.

Introduction Contamination is the problem that most frequently affects sample integrity.
Sharp increases in the concentration of wear metal, water, unusual color
(viscosity breakdown), and particulate matter may be indications of
contamination.
Wear Metals Wear metals are pieces of the component generated by friction between the
moving metallic surfaces in mechanical systems. Despite lubrication, wear
metal generation occurs in all oil-wetted systems to some degree and the
lubricant serves as a repository for the wear metals. Generation of wear
metals also occur from corrosive action resulting from moisture and
electrolytic action within lubricated systems.
Rate Description
Constant It is normal for a piece of operating equipment to produce
wear metals at a constant rate. In some cases the rate may
be negligible, but the rate must be similar for all equipment
of the same model. Wear metal concentration will also
increase at a constant rate during normal operation of a
completely enclosed system with no fluid consumption.
Accelerated New or recently overhauled equipment tends to produce
wear metals at an accelerated rate. During this break-in
period, evaluation maybe difficult since wear metal
production maybe higher than normal.
Baseline Additional samples may be required to establish the true wear metal baseline.
In some cases, systems may have to be flushed one or more times to remove
contaminating substances.
Water Synthetic lubricants are hydroscopic by nature. Meaning, they readily absorb
and accumulate moisture. Accumulation of excessive water and/or long
exposure to water will eventually overcome the oils protection value and
corrosion will most likely occur.
Internal equipment corrosion may occur when water is allowed to

contaminate equipment-lubricating fluid. Helicopter gearboxes are
particularly susceptible to water-induced internal corrosion because of design
features that frequently do not protect against water intrusion.

Unusual Color Do not use the color of the oil as the basis for deciding if the mechanical
condition of engines, gearboxes, or their components are or are not
acceptable. Oils may vary in color depending on the lubricant suppliers
formulation, as there is no color requirement for these products. The color of
the oil is due in part to the additives used by the different manufacturers and
is not an indication of oil quality.
Color When viewed under various light sources some products will give off a
Variations reddish, or even a bluish appearance while other formulations will range in
color from a very light straw appearance to an almost clear color. Some
lubricants may have a dark brown color. The light colored oils will
progressively darken after a short time in operation.
Poor Oil Indications of poor oil condition are oils that are visibly thickened, display
Condition contamination, or which have pungent, burnt or fuel odors. Change lubricants
and monitor systems for proper operation.
Mixing different grade oils are to be avoided at all costs.
Particulate The most common contaminations found in lubricant systems are dirt and
Matter sand that is detected by an increase in silicon. Silicon contamination is a
common problem in dry, sandy, or dusty operational areas. Once in the
component, dirt and sand are abrasive, and may accelerate wear.
Challenge True or False. You may be required to flush systems to get a baseline sample.
ANSWER – True. Additional samples may be required to establish the true

wear metal baseline. In some cases, systems may have to be flushed one or
more times to remove contaminating substances. See page 2-34.

Sampling Techniques
Methods The three basic techniques for taking a sample are dip tube, drain/valve, and
pump. Detailed sampling procedures for specific equipment are established
in applicable service documentation governing the use and operation of such
equipment.
Dip Tube Below are the procedures for dip tube sampling.
Step Action
1 Remove the filler cap/dip stick from the tank and open the sample
bottle.
2 Using a sampling tube of the correct length, grasp the tube at one
end and lower it into the tank through the filler neck.
3 Allow the lower end of the tube to fill with fluid, and then close
the upper end with a thumb or finger. Withdraw the tube and drain
the trapped fluid into the sample bottle.
4 Repeat the above operation until the bottle has been filled to
approximately ½inch from the top.
5 Replace the filler cap on the tank and dispose of the sampling tube
in accordance with local base requirements.
For units using the new sampling kit with the plastic bottle, follow the
procedures below.
Step Action
1 Insert one end of the dip tube into the opening on the cap of the
plastic bottle.
2 Insert the other end into the oil reservoir.
3 Squeeze and release the bottle.
4 After the sample is obtained, remove the tube and close the lid.

Sampling Techniques, Continued
Drain/Valve Below are the procedures for drain/valve sampling.
Step Action
1 Check appropriate service documentation for location of
drain/valve.
2 Open the sample bottle.
3 Hold the sample bottle under the drain/valve and fill to
approximately ½inch from the top. Close the drain/valve outlet.
4 Replace the bottle cap and tighten it enough to prevent leakage
from the bottle.
Note: Equipment may have to be in operation for valve sampling.
Pump Below are the procedures for pump sampling.
Step Action
1 Determine the best source for obtaining the sample such as the
dipstick hole or filler neck.
2 Determine the best length for sample tubing according to the
equipment.
3 Open the sample bottle.
4 Use pump/syringe action to draw fluid from equipment.
5 Deposit fluid into sampling bottle. Repeat steps as necessary to
fill sample bottle to approximately ½inch from the top.
6 Replace the filler cap or dipstick and discard the sampling tube.
Replace the sample bottle cap and tighten enough to prevent
leakage.

Sampling Techniques, Continued
Oil Serving Below are the procedures for performing oil servicing cart sampling:
Cart
Step Action
1 Remove the supply tank fill cap and visually inspect tank for
contamination. If contamination is found, refer to applicable tech
orders and conduct an investigation.
2 With the supply hose connected to the fill cap adapter, operate
pump to circulate oil from the tank to the supply hose.
3 Remove the hose from the fill cap adapter and install the nozzle
adapter onto supply hose.
4 Carefully pump a sufficient amount of oil into the sample bottle,
filling the bottle within one-half inch from the top of the bottle.
When to Take Take samples as soon as possible after the engine/equipment has been
Oil Samples shutdown and before any fluid is added to the system. New oil may be added
if the
• Oil level is too low to permit sampling.
• Laboratory requests a special sample following oil addition and before

equipment operation.
Note: Unless otherwise directed by the laboratory, the old and new oils must
be thoroughly mixed to obtain a homogeneous mixture by operating
the unit to operating temperatures before taking the sample.
Challenge True or False. Drain valve sampling requires the use of a dip tube.
ANSWER – False. Dip tube sampling requires the use of a dip tube. See
page 2-37.

Special Precautions
Introduction Precautions must be taken to not drop material into the equipment during
sampling or contaminate the sampling material prior to, or during sampling.
The following paragraphs describe these precautions.
Producing The following precautions assist in ensuring reliable equipment fluid samples:
Quality Oil
Samples • Use the correct length of sampling tube for the particular equipment
involved so that the tube cannot reach the bottom of the tank and pick up
sludge contamination. If the straw must be cut, make cut at a 45-degree
angle, exercising care not to leave rough edges that could introduce bits of
plastic tubing into the system being sampled.
• Avoid contact of the sampling tube with the outside of equipment being
sampled and all other surfaces that might contaminate it. Use a sampling
tube to take one sample only.
• Open the sample bottle only when ready to take the sample and replace the
bottle cap immediately after taking the sample.
• In cases where samples can be taken only by draining from a valve or the
bottom of the tank, sump, or case, open the drain valve/outlet and allow
enough fluid to flow through or to wash out any accumulated sediment
before filling the bottle. If that particular system does not normally have
sediment at the point where the sample is drained, it is not necessary to
perform the sediment removal procedure.
• Use lint-free wiping cloths to avoid introducing lint into the system.

Special Precautions, Continued
Personnel/ Below are some precautions concerning personnel and equipment.

Equipment
Concerns • Remove the caps from the ends of the straws prior to going out onto the
flight line to eliminate Foreign Object Damage (FOD) hazards.
• If you are not performing the sample on the flight line, remove the caps
from the ends of the straws away from the equipment being sampled to
avoid dropping them into the equipment. If sampling materials are
accidentally dropped into the system, do not operate the equipment until
corrective action has been completed.
• To reduce the possibility of sample misidentification, mark all sample

bottles/bottle containers with equipment/system identification prior to
sampling
• Store unused sampling kits or materials in clean, closed containers, such as

the packaging boxes in which received.
WARNING: Do not use mouth suction to fill the sampling tube. Many
fluids are highly toxic and may cause paralysis and/or death.
Exercise care during the sampling process to avoid burns from

hot fluid. Do not leave plastic tubing in hot fluid for extended
periods since the tubing may melt and contaminate the system.
Challenge True or False. If a pump/syringe is not available, you can draw the oil
through the straw by using you mouth.
ANSWER – False. Never use mouth suction to fill sampling tube!!! See
page 2-40.

Types of Oil Samples
Categories Oil samples are divided into three categories: routine, special and additional
special. The following paragraphs define these different types of samples.
Routine Routine sampling intervals shall be as specified in appropriate service

documentation governing operation and maintenance of each
Type/Model/Series equipment.
Special Oil Special samples from equipment monitored by the service oil analysis
programs will be taken in accordance with the following guidelines:
• Whenever requested by the laboratory.
• Whenever directed by the unit maintenance activity to investigate

suspected deficiencies.
• Immediately following an operation in which any abnormal condition or

incident occurred resulting from either malfunction of the oil lubrication
system, damage to the system from excessive loss of engine oil, or
low/fluctuating or zero oil pressure.
• Immediately before and after maintenance is performed affecting the oil

lubrication system, including the removal and replacement of an oil
lubrication system component. Systems that are sampled after each flight
do not require samples taken prior to maintenance, provided an analysis
was accomplished after the last flight. Take "after replacement" sample
after ground/functional run-up or check flight.
• After flight test following installation of new, overhauled, or repaired

aircraft engines.
• After completion of a test cell run. If the unit is operated on oil previously
used in the test cell system, a sample is required both before and at the
completion of the test cell run.

Types of Oil Samples, Continued
Special Oil, • Whenever excessive vibration or a chip light indication is experienced on

continued an aircraft engine or component during flight, ground or test run.
• Immediately following all aircraft incidents involving failure of internal

enclosed lubricated parts or unplanned/unexpected shutdown affecting
operation of internal enclosed lubricated parts.
• Immediately following all aircraft accidents regardless of cause and

resulting damage. These samples shall be taken by any means possible to
obtain a representative sample.
• Before overseas deployment or redeployment of any equipment already

being monitored by oil analysis.
Additional Special samples taken from equipment not enrolled in a service oil analysis
Special program may be submitted to a JOAP Laboratory. No advice is provided for
samples that do not have limits provided to JOAP by the cognizant
engineering activity. Meaning, if specific limits for the equipment oil is not
provided to the laboratory, the lab cannot give you advice on what action to
take. They can only give the condition and contaminates of the oil tested.
Challenge True or False. Special oil samples are taken when requested by the
laboratory.
ANSWER – True. This is one of the many reasons for a special oil sample.
See page 2-41.

Documentation
Introduction Proper documentation on all associated forms is paramount. Without this,

tracking of possible trends on equipment/aircraft components is impossible.
Trend Analysis Trend analysis provides a lifetime picture of the equipment/aircraft

components. This will prevent a possible failure of equipment/aircraft
components by showing a progressive or systemic problem with the
equipment/aircraft component and allow removal before failure.
DD Form 2026 Information can be found in the aircraft/equipment logbook for the fields
which information is not known such as the hours since overhaul, serial
numbers, hull numbers, and model. Complete information must be
documented within the DD Form 2026 for proper identification. Obtain the
serial numbers directly from the aircraft/equipment from which the oil sample
was drawn.
Unmatched Immediately notify Quality Assurance if the serial numbers within the
Serial Numbers logbook do not match the numbers taken from the equipment. Do not turn the
sample in for analysis. There may be a bigger problem, and the
aircraft/equipment is not to be used until an investigation is completed. This
may turn out to be a simple typographical error, but could be as serious as
wrong equipment being used or installed on the aircraft.

Documentation, Continued
Example of DD
Form 2026,
Front Page

Documentation, Continued
Example of DD
Form 2026,
Back Page

Lesson 2 Exercise

Item 1 The purpose of the NOAP is to establish policies, responsibilities, and

requirements for monitoring equipment condition in an effort to detect
impending failures without ______________ or equipment removal.
a. oil drainage
b. extensive disassembly
c. damage
d. documentation
Item 2 Which of the following references outlines the responsibilities of the work-
center supervisor regarding the NOAP?
a. OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)

b. OPNAVINST 4731.1, Joint Oil Analysis Program (JOAP)
c. NAVAIR 17-15-50.1/2/3, Joint Oil Analysis Program Manual
d. NAVAIR 17-12-45, Navy Oil Analysis Program (NOAP)
Item 3 Which of the following is a responsibility of the workcenter supervisor

outlined by the NAMP regarding the NOAP?
a. Coordinate with the NOAP monitor to ensure an adequate supply of oil

b. Ensure oil sampling units are maintained free of contamination.
c. Coordinate with the NOAP manager to ensure an adequate supply of oil
sampling kits.
d. Ensure hydraulic servicing units are maintained free of contamination.

Item 4 What is the most common contamination found in the lubricant system?
a. Water
b. Wear metals
c. Particulate matter
d. Gas
Item 5 The three types of oil sampling techniques are dip tube, ___________, and
drain/valve.
a. mouth-suction
b. pump
c. drop
d. special
Item 6 The three types of oil samples are special, _____________, and additional
special.
a. normal
b. abnormal
c. complex
d. routine

Lesson 2 Exercise

1 b 2-29
2 a 2-31
3 c 2-31
4 c 2-34
5 b 2-36
6 d 2-41
Lesson In this lesson, you learned how to manage/monitor the NOAP within your
Summary workcenter. In the next lesson, you will learn about the Aviation Breathing
Oxygen (ABO) Surveillance.

LESSON 3
AVIATION BREATHING OXYGEN SURVEILLANCE PROGRAM
Introduction
Scope Lack of proper quality control of aviation breathing oxygen, can directly
cause loss of aircrews, affect civilian lives and property in the path of flight,
and impact mission effectiveness.
The quality control of this oxygen requires frequent and continuous

surveillance. Surveillance begins with base generation or procurement and
continues throughout storage, handling, transfer, and servicing of the aircraft.
Adequate and reliable quality control of Aviation Breathing Oxygen (ABO)
demands that each operation in the aircraft oxygen supply system be carried
out in strict compliance to ensure flight safety and mission completion.
• Guidance needed as a workcenter supervisor to monitor the ABO

Surveillance Program within an aviation maintenance activity.
• Proper procedures for managing an ABO Surveillance Program within

your workcenter.


Objectives
• Identify the purpose of the ABO Surveillance Program.
• Identify the references used to monitor the ABO Surveillance Program.
• Identify the responsibilities of the workcenter supervisor in the ABO

Surveillance Program.
• Predict the consequences of failing to meet the minimum responsibilities

of a workcenter supervisor.
• Identify the types of Liquid Oxygen (LOX) contamination.
• Identify the safety procedures and precautions in the ABO Surveillance

Program.
Topic See Page

Introduction 2-49
Purpose 2-51
References 2-52
Types of ABO 2-57
Contaminants 2-59
Tools and Equipment 2-64
Safety Procedures/Precautions 2-65
Personal Protective Equipment 2-68

Purpose
Introduction The purpose of the ABO Surveillance Program is to establish policies,

responsibilities, and requirements for implementing and maintaining
techniques to prevent contamination of aircraft oxygen systems and
components through careful/safe handling, surveillance, and quality control.
Areas of The ABO Surveillance Program involves the manufacturing, usage, handling,
Involvement and servicing of oxygen and related support equipment (SE). ABO must
conform to stringent quality standards and be safely delivered through
approved equipment. Poor quality oxygen presents a hazard to aircrew,
maintenance personnel, and equipment.

References
List of Listed below are required reference materials needed to monitor an ABO
Reference Surveillance Program within your workcenter:
Materials
• NAVAIR A6-332AO-GYD-000, Aviators Breathing Oxygen (ABO)
Surveillance Program Laboratory Manual and Field Guide
• NAVAIR 13-1-6.4-1/4, Aviation Crew System Oxygen Equipment
• NAVAIR 06-30-501, O2/N2 Oxygen/Nitrogen Cryogenics Systems
• NAVAIR 06-20-2, Gas Cylinders (Storage Type)
• NAVAIR 17-15-98, Aviators Breathing Oxygen Contaminant Analyzer,

A/E24T-226 Part Number 8220A
• OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)
Note: References nomenclatures will periodically change due to updates and

material.
NAVAIR A6- This laboratory manual and field guide provides information, guidance,
332AO-GYD- instructions, and procedures for quality control of liquid and gaseous oxygen
000 used for aviators breathing purposes.
NAVAIR 13-1- This manual has several volumes that provide technical information related to
6.4-1/4 the configuration, application, function, operation, storage, and maintenance
of a particular category of aircrew safety and survival equipment. The
information contained in each volume is intended for Organizational,
Intermediate, and Depot Levels of maintenance as established within the
Naval Aviation Maintenance Program, OPNAVINST 4790.2H series.
NAVAIR 06- This manual is divided into seven different topic sections. It can be used as a
30-501 technical training aid or ready reference for the technician working with
cryogenic oxygen and nitrogen systems.

NAVAIR 06- This technical order provides information and procedures to be followed in
20-2 the use, inspection, and handling of compressed gas cylinders and cylinder
valves. The provisions of this technical order apply to activities within the
Air Force and other associated DOD activities that use Air Force/government
owned compressed gas cylinders.
NAVAIR 17- This manual provides information and procedures for installation, operation,
15-98 and maintenance of the Analyzer Set, Contaminate Aviators Breathing
Oxygen Part Number 3346AS100-1, and associated ancillary equipment.
OPNAVINST The purpose, definition, objectives, and methodology of the NAMP were
4790.2H NAMP covered in the previous study unit. The following information pertains to the
ABO Surveillance Program within the NAMP.

Responsibilities The minimum responsibilities for the workcenter supervisor when managing
of the the ABO Surveillance Program as per the Naval Aviation Maintenance
Workcenter Program (NAMP) are to
Supervisor
• Ensure ABO Surveillance Program indoctrination and follow-on training
is provided to personnel.
• Ensure training includes personnel responsibilities to be documented on

the NAMP Indoctrination Training sheet (see previous study unit) in the
individual's qualification/certification record.
• Maintain a sufficient number of oxygen certified/qualified personnel.

• Maintain LOX converters per NAVAIR 13-1-6.4-1/4 and oxygen
servicing SE, supplies, and tools per applicable manuals. Explosion will
occur if you fail to meet this requirement.
• Organize oxygen shops per NAVAIR 13-1-6.4-1/4 or MIL-HDBK-
1028/1A (if applicable).
• Ensure all tools/tool boxes used on oxygen systems and servicing SE are
marked "OXYGEN USE ONLY."
• Ensure proper PPE is provided and used. When involved in handling

LOX, ensure all personnel present are wearing PPE.
• Ensure all personnel follow safety precautions and regulations while

performing maintenance on oxygen systems.
• Ensure a clean 6-inch deep drip/drain pan is used for LOX operations and
marked "LOX USE ONLY". Also ensure drip pan is clean and free from
dirt, grease, oil, fuel, hydraulic fluid, and other hydrocarbons.
• Notify Maintenance Control/Production Control (MC/PC) and Quality
Assurance (QA) if contamination or odors in oxygen systems are detected
or suspected.
Note: A damaged oxygen system will result if you fail to meet these
requirements.
• Ensure equipment and areas around the oxygen system components are
clean and free of oil and petroleum products.

Introduction Indoctrination training shall be provided to all personnel involved with the
ABO Surveillance Program and/or equipment. Follow-on training will be
provided as required.
personnel will be performing. This training shall include, but not be limited
to

• Storage and safe handling of oxygen
• Safety hazards involving flammability of oxygen
Reference References involving aviation oxygen are to numerous for your Marines to
Publications truly understand in depth. Therefore, as in most other indoctrination training
it should be tailored to familiarize your Marines in this program and not make
them experts.
Requirements outlined in the previous study unit.

Indoctrination and Follow-on Training, Continued
Selection of Personnel selected to perform operations in the oxygen supply system should
ABO Personnel be trained and have thorough knowledge of the
• Characteristics of all forms of oxygen

• Significance of contamination when used for breathing purposes
• Oxygen system to be quality controlled
Assign only personnel who demonstrate understanding of the operations

involving reliable performance duties and responsibilities in the supply of
ABO.
Challenge True or False. The purpose of the NAVAIR A6-332AO-GYD-000 is to

familiarize your personnel with LOX and ABO.
ANSWER – False. The purpose of this laboratory manual and field guide is
to provide information, guidance, instructions, and procedures for quality
control of liquid and gaseous oxygen used for aviators breathing purposes.
See page 2-52.

Types of ABO
States of Oxygen can exist as a solid, liquid, or gas depending upon the temperature
Oxygen and pressure to which it is subjected. Aviators Breathing Oxygen (ABO),
MIL-0-27210, comes in two states:
Type Oxygen Description

I Gaseous Colorless, odorless, tasteless and 1.1 times as
heavy as air.
II Liquid An extremely cold, pale blue fluid that flows like
water. LOX is converted to a gaseous state prior to
delivery to the aircrew. LOX requires frequent and
continuous surveillance for the detection of
contamination.
Type I Gaseous oxygen is colorless, odorless, tasteless and 1.1 times as heavy as air.
Type II LOX is an extremely cold pale blue fluid that flows like water. LOX is
converted to a gaseous state prior to delivery to the aircrew. LOX requires
frequent and continuous surveillance for the detection of contamination.
Contamination Careful and proficient handling and transfer operations shall prevent the
of ABO addition of contaminants from the environment. LOX strongly attracts and
absorbs atmospheric gases, some of which are odorous and may be present in
the atmosphere, due to an environmental source.
These subjects are covered more in depth in the contamination and safety
precaution sections of this lesson.

Types of ABO, Continued
Storage of LOX LOX is stored and handled at atmospheric pressure in well-insulated

containers that maintain the liquid at its boiling point. The following table
shows the different stages of LOX.
Stage State Description

1 Liquid Boiling as it slowly turns to gas.
2 Gas As the expanding gas from the boiling liquid increases
in amount, it builds up pressure within the container.
The expanding gas must be vented to the atmosphere
because confinement is both dangerous and
impractical.
3 Vapor When the cold and colorless gas is vented to the
atmosphere, it produces a fog as it immediately
condenses moisture and carbon dioxide in the air.
Note: These subjects are covered more in depth in the contamination and
safety precaution sections of this lesson.
Challenge True or False. ABO and LOX are considered the same thing.
ANSWER – False!!! ABO is in a gaseous form and LOX is in a liquid form.

Never confuse the two. See page 2-57.

Contaminants
Concentration The concentration of LOX contaminants increases continuously after it is

produced because non-volatile contaminants are concentrated by the
evaporation of LOX. This gradual process of increasing contamination is
accelerated if contaminants are introduced during storage, handling, and
transfer operations.
The contamination of LOX is therefore compounded each time it is

transferred. Thus, an acceptable concentration of contaminants in liquid
oxygen as generated or procured can increase to a point that may threaten the
safety or success of the mission.
Sources LOX produced by generating plants contain contaminants that are not
completely removed by the generating process. Atmospheric air, from which
LOX is generated, is the primary source of contamination. Additional
sources of contamination are the compressors and other equipment of the
generating plants.
Increase LOX in storage systems is always boiling and evaporating. Non-volatile

contaminants in LOX are always increasing in concentration as the amount of
liquid decreases. This ever-present process of increasing contamination is
intensified by cool-down vaporization losses associated with liquid transfer
operations. Concentration of contaminants will increase in approximate
proportions to the amount of LOX loss by vaporization.
Removal Airborne contaminants and those added by the generating plants are partially
removed by a system of filters, absorbers, dryers, and heat exchangers before
the air is finally liquefied. When LOX separates from liquefied air it carries
with it contaminants that are not completely removed.
Challenge True or False. Dirt is the primary source of contamination in LOX.
ANSWER – False. Atmospheric gases, from which LOX is generated, is the

primary source of contamination. See page 2-57.

Categories Contamination of LOX is divided into three basic categories.
• Hydrocarbons
• Toxic and Odorous Contaminants
• Inert solids
Hydrocarbons Hydrocarbons are present in atmospheric air and also are added by the
compressors and other equipment of the generating plant. They are only
partially removed by the purifiers of the generating plants. Two types of
hydrocarbons existing as LOX contaminants are
• Light hydrocarbons.
• Heavy hydrocarbons.
Light Those which separate with the LOX are called light hydrocarbons because
Hydrocarbons they contain four carbon atoms or less, such as methane, acetylene, ethane,
ethylene, propane, and butane.
Heavy Heavy hydrocarbons are removed to insignificant concentrations in properly

Hydrocarbons operating plants. However, the use of faulty equipment and handling will
increase the presence of heavy hydrocarbon contamination in the form of
solvents, oils, greases, or fumes.
Fire/Explosive The presence of hydrocarbons in LOX presents a potential fire and explosion
Hazards of hazard. The hazard increases during storage and handling because all of the
Hydrocarbons common hydrocarbon contaminants are less volatile than LOX and, therefore
increase in concentration. If either the solubility limit or the low flammability
limit of the hydrocarbon is exceeded, the condition is especially hazardous.

Source of A source of ignition can initiate a reaction if the hydrocarbon is present in

Ignition sufficient concentration. Listed below are ignition sources:
• Static electricity
• Mechanical and fluid friction
• Particle impact
• Shock waves introduced by impact
Hydrocarbon Whenever a hydrocarbon is present in dangerous quantities, it will form a

Quantities solid. Even the smallest grain of hydrocarbon solids in LOX has the potential
of igniting if enough energy is present to initiate a reaction. Although one
tiny particle may not be dangerous in itself, a collection of such particles
could be serious, since ignition may start from a collision of particles.
Psychological Hydrocarbon contaminants in LOX also create potential psychological and

and physiological hazards to aircrews when used for breathing purposes.
Physiological Depending upon the type and concentrations of hydrocarbons, psychological
Hazards of effects may be uneasiness, apprehension or possible panic resulting from
Hydrocarbons detecting their presence by odor. Physiological effects may be nausea,
illness, intoxication, or possible asphyxia.
Carbon Dioxide This contaminant is slightly soluble in LOX, but separates out of LOX as a
solid when in sufficient quantity.
Toxic and The following contaminates are considered toxic and/or odorous:
Odorous
Contaminants • Nitrous oxide
• Halogenated fluorocarbons
If present in aviation liquid breathing oxygen, these may affect the mental and
physical well being of aircrews.

Nitrous Oxide Nitrous oxide may present hazards as those listed above, as well as the
inherent danger of combining with acetylene when both are present in
sufficient quantities. The combination formed may concentrate at the
bottoms of tanks and detonate.
FREONS Halogenated fluorocarbons (FREONS) present in the sample may
• Indicate refrigerant leaks in the generation plant

• Be a residue of equipment cleaning operations
• Have been introduced into the system at the generating plant
All FREONS present in the oxygen are treated as refrigerants.
Notification of Maintenance Control and QA shall be notified if contamination or odors in

Contamination/ oxygen systems are detected or suspected. Never assume anything when
Odors ABO or LOX is involved. An incident may seem trivial to you, but may save
the life of personnel down the line of use. A funny odor may cost the life of
an aviator or damage oxygen systems that greatly impact mission
accomplishment.
Inert Solids Inert solids consist of three distinct forms:
• Particulate matter
• Moisture
• Carbon dioxide
These contaminants are classified as inert solids because they normally do not
react with oxygen to create a fire or explosion hazard.
Why are they Inert solid contaminants in LOX are hazardous for three reasons. They may
Hazardous cause
• Mechanical malfunctions or failures

• Plugging of filters, lines, injectors, valves, etc.
• Accumulation charges of static electricity

Particulate These solids consist of materials such as

Matter
• Rust
• Metal fragments
• Dust
• Fibers
This type of contamination is obtained from the equipment or the

environment. They are solids at normal temperatures as well as at LOX
temperature. Hazards are the same as discussed in the hydrocarbon section.
Moisture In its liquid or vaporous form, moisture forms ice on contact with LOX or
with the cold surfaces of equipment. Atmospheric moisture is an ever-present
source of contamination. Moisture has been identified as the cause of
numerous LOX converter explosions due to pressure devices frozen in place.
Challenge True or False. Hydrocarbon solids in LOX have the potential of igniting.
ANSWER – True. Even the smallest grain of hydrocarbon solids in LOX has
the potential of igniting if sufficient energy is present to initiate a reaction.
See page 2-60.

Tools and Equipment
Scope The use of any tools and/or equipment not designated, as “Oxygen Use Only”
shall be avoided at all costs. The tools and associated equipment involved in
the maintenance of oxygen systems, if not used in accordance with applicable
technical manuals, can introduce contaminates into systems and create serious
dangers with disastrous consequences.
Marking of All tools/toolboxes and servicing SE used on oxygen systems must be marked
Tool Boxes "OXYGEN USE ONLY." The markings shall be easily viewed by any
personnel who may come in contact with the equipment to avoid use on any
other equipment not involved in oxygen systems.
Drip Pans Use a clean 6-inch deep drip/drain pan for LOX operations when necessary,
identified "LOX USE ONLY." The same principles apply to drip pans for
markings as tools and toolboxes. Drip pans must be clean and free from dirt,
grease, oil, fuel, hydraulic fluid, and other hydrocarbons.
Work Areas All work areas involved in or adjacent to any maintenance involving
ABO/LOX shall be kept organized, and in a good state of police and
cleanliness. Any oil and/or petroleum products shall be cleaned immediately.
Failure to do so could result in a fire and/or explosion.

Safety Procedures/Precautions
Introduction A high level of safety can be achieved if operating personnel have the proper
attitude, understanding, and training. Safety regulations must be
conscientiously practiced and rigidly enforced. It is the painful truth that
many of these regulations have been written due to the death or suffering of
those who were not aware of safety procedures and precautions or chose to
ignore them.
Education The best assurance of personnel safety lies in the safety-education of your
Marines. If they are aware of the potential hazards and the means of
protecting their lives, and others, most of them will adhere to the regulations.
Reactivity of Oxygen is a very reactive material that combines with most of the chemical
Oxygen elements. The combining of oxygen with another substance is known as
oxidation. Extremely rapid or spontaneous oxidation can lead to combustion
of all flammable materials, some to an explosive degree. Oil or grease must
never be allowed to come into contact with or be used in the presence of open
cylinders, valves, regulators, gages, or fittings. Fire and/or explosion may
result.
ABO Gaseous oxygen is extremely hazardous when used in the presence of readily
combustible materials. Use “Extreme Caution” when working with or in the
presence of gaseous oxygen (ABO).

Hazards The hazards involving ABO are too numerous to review in-depth with this
Involving ABO lesson. However, some of the most common precautions are described
below.
• Do not permit oil, grease, gasoline, kerosene, aviation fuel or any other
readily combustible material to come in contact with oxygen.
• Ensure all oxygen equipment left outdoors is sheltered from the elements.
• Never mix other gases or compressed air in an oxygen cylinder.
• Exercise care that compressed oxygen does not become contaminated in

anyway with hydrogen, hydrocarbon gases, or oil base liquids as a serious
explosion can result.
• Ensure hands are clean and free from oil before using oxygen equipment.
Do not wear greasy gloves or clothing.
• Never permit oxygen cylinders to come into contact with electrical

welding circuits or apparatus.
• Do not allow sparks or flames from welding or cutting torch or any other
source to contact cylinders.
For further guidance involving the hazards of ABO, refer to NAVAIR 13-1-
6.4-1 (3-19 GASEOUS OXYGEN HAZARDS).
LOX The hazards involving LOX are too numerous to review in-depth with this
lesson. However, the three basic hazards, freezing, fire and explosion, and
pressure explosion are described in the following paragraphs. Further
guidance involving the hazards of LOX are outlined in NAVAIR 13-1-6.4-1
(3-23 LIQUID OXYGEN HAZARDS).
Freezing Because liquid oxygen has an extremely low temperature, it can freeze or
seriously damage skin tissue upon contact. The effect is similar to frostbite or
thermal burn. Metals and similar materials cooled by liquid oxygen may
freeze to the skin upon contact. Flesh can be badly burned or torn in an
attempt to free it.

Fire and Always handle liquid oxygen in well-ventilated areas and never dispose of
Explosion liquid oxygen in confined spaces. If liquid oxygen is spilled on a combustible
substance, the substance will burn with great intensity if ignited. Do not
allow any organic matter or flammable substance to come in contact with
liquid oxygen. Some of the materials may react violently with oxygen under
the right conditions of temperature and pressure.
The mere mixture of liquid oxygen with powdered organic materials under
certain conditions may cause an explosion. If the vapor from liquid oxygen
mixes with fuel vapors in the right proportions, the mixture will explode if
ignited. Every fire involving liquid oxygen must be regarded as an explosion
hazard.
Pressure If liquid oxygen is vaporized and warmed to an ambient temperature, one

Explosion volume of liquid oxygen will expand to 862 volumes of gaseous oxygen. If
this evaporation and expansion takes place in a confined space, explosive
pressures will be created. For this reason, all storage containers must be
provided with pressure relief devices, unless the container is so vented that
gas cannot be entrapped.
Challenge True or False. LOX is harmless and will do no real damage if spilled on your
hand.
ANSWER – False!!! Because liquid oxygen has an extremely low

temperature, it can freeze or seriously damage skin tissue upon contact. The
effect is similar to frostbite or thermal burn. See page 2-66.

Personal Protective Equipment
Introduction Because of the hazards associated with handling liquid oxygen, it is

imperative that all personnel working with liquid oxygen wear protective
clothing. The following paragraphs describe the Personal Protective
Equipment (PPE) that shall be used in working around LOX.
Face Eye protection is to be worn at all times when working with liquid oxygen.
Shield/Safety When working in confined areas or overhead, wear face shield or safety
Goggles goggles to protect the eyes. Safety glasses with side shields may also be used.
Leather Gloves Always wear leather gloves when handling any equipment that is or may have
been in recent contact with liquid oxygen. Gloves shall be loose fitting so
that they can be quickly removed if LOX gets into them. In addition, use
protective gloves when handling purging units.
Coveralls Personnel involved in the handling of liquid oxygen shall use coverall,
explosive ordnance handlers, cotton sateen, or fire resistant. Cuff less sleeves
and trouser legs shall be worn over the top of gloves and shoes.
Aprons Personnel involved in the handling of liquid oxygen shall use aprons that are
impermeable, cotton duck, or rubber coated. The apron shall be tied or
secured in a fashion that would make it easy to remove in case of emergency.
Footwear, LOX Personnel involved in the handling of liquid oxygen shall use shoes that are
Boots safety, molders, congress style, or black. These shoes are a type that can be
easily removed in case of emergency.
Clothing Safety Any clothing that is splashed by liquid oxygen shall be removed immediately
and thoroughly aired for at least 1 hour.

Personal Protective Equipment, Continued
Challenge True or False. Any type of eye protection will suffice when working with
LOX.
ANSWER – False. When working in confined areas or overhead, wear face

shield or safety goggles to protect the eyes. Safety glasses with side shields
may also be used. See page 2-68.

Lesson 3 Exercise

Check your answers against those listed at the end of this lesson exercise.
Item 1 The purpose of the ABO Surveillance Program is to establish policies,

techniques to prevent ____________of aircraft oxygen systems and
components through careful/safe handling, surveillance, and quality control.
a. oxidation
b. contamination
c. removal
d. leakage
Item 2 Which of the following references is the laboratory manual and field guide?
a. NAVAIR 13-1-6.4-1/4
b. NAVAIR 06-30-501
c. NAVAIR 06-20-2
d. NAVAIR A6-332AO-GYD-000
Item 3 Under the ABO Surveillance Program, the workcenter supervisor is

responsible for ensuring
a. NOAP indoctrination, follow-on training, and lubrication systems

training are provided to personnel.
b. all authorized fluid dispensing SE is used and maintained in high
standard of cleanliness.
c. all personnel perform pre-operational inspections.
d. equipment and areas around oxygen are clean and free of oil and
petroleum products.

Item 4 For this item, select all that apply.
Workcenter supervisors are responsible for maintaining LOX converters per

NAVAIR 13-1-6.4-1/4 and oxygen servicing SE, supplies, and tools per
applicable manuals. What are the potential consequences for failing to meet
the minimum requirements for this responsibility?
a. Contamination
b. Explosion
c. Proper functions
d. Equipment failure
Item 5 For this item, select all that apply.
Workcenter supervisors are responsible for ensuring that Maintenance

Control and QA are notified if contamination or odor in oxygen systems are
detected or suspected. What are the potential consequences for failing to
meet the minimum requirements for this responsibility?
a. if 1 and 2 are correct

b. if 3 and 4 are correct
c. if 1 and 3 are correct
d. if 1, 2, and 3 are correct
1. Fire
2. Frostbite
3. Panic
4. Plugging of filters

Item 6 Through Matching: For items 6 through 9, match the contaminate in column 1 with its
Column 1 Column 2
Contaminate Definition
____6. Inert solid a. Forms ice on contact with LOX

____7. Moisture or with the cold surfaces of
____8. Light hydrocarbons equipment.
____9. Particulate matter b. Contain four carbon atoms or
less, such as methane, acetylene,
ethane, ethylene, propane, and
butane.
c. Consist of materials such as rust,
metal fragments, dust, and/or
fibers.
d. Contaminants normally do not
react with oxygen to create a fire
or explosion hazard.
Item 10 Name the three basic hazards involving LOX.
(1) __________________________________________
(2) __________________________________________
(3) __________________________________________


1 b 2-51
2 d 2-52
3 d 2-54
4 b 2-54
5 c 2-60, 2-61
6 d 2-62
7 a 2-63
8 b 2-60
9 c 2-63
(1) Freezing
10 (2) Fire and explosion 2-66,2-67
(3) Pressure explosion
Lesson In this lesson, you learned how to manage/monitor the Aviation Breathing
Summary Oxygen (ABO) Surveillance Program within your workcenter. In the next
lesson, you will learn about the Hydraulic Contamination Control Program.


LESSON 4
HYDRAULIC CONTAMINATION CONTROL PROGRAM
Introduction
Scope Hydraulic fluid contamination can lead to hydraulic system and component
failures that present a serious threat to flight safety. Stringent contamination
control is required at all levels of maintenance to ensure flight safety and the
highest degree of hydraulic system readiness. An aggressive hydraulic fluid
surveillance program, with sampling/testing accomplished as required, will
ensure hydraulic fluids are maintained within acceptable contamination
limits.
• Guidance needed as a workcenter supervisor to monitor the Hydraulic

Contamination Control Program (HCCP) within an aviation maintenance
activity.


Objectives
• Identify the purpose of the Hydraulic Contamination Control Program.
• Identify the references used to monitor the Aviation Hydraulics Manual.
• Determine the responsibilities of the workcenter supervisor in the

Hydraulic Contamination Control Program.
• Identify the principles of the hydraulic system.
• Identify the basic operating procedures for hydraulic servicing.
• Describe the maintenance procedures for the different types of hydraulic

SE.
• Identify the proper sampling requirements for hydraulic sampling.
• Identify the procedure for hydraulic fluid analysis.
• Identify the types of hydraulic contamination.
• Identify the types of hoses.
• Identify the types of tubing.
• Identify the types of approved closures.

Topic See Page

Introduction 2-75
Purpose 2-78
References 2-79
Hydraulic Systems 2-84
Hydraulic Servicing Units 2-86
Hydraulic Support Equipment 2-90
Hydraulic Fluid Sampling 2-95
Hydraulic Fluid Analysis 2-98
Hydraulic Contamination 2-101
Particulate Contamination 2-102
Fluids/Liquid Contamination 2-105
Gas/Air Contamination 2-107
Hoses 2-109
Tubing 2-113
Approved Closures 2-115

Purpose
Introduction The purpose of the Hydraulic Contamination Control Program is to establish

policies, responsibilities, and requirements for implementing and maintaining
techniques to achieve and maintain a satisfactory level of fluid purity in
hydraulic systems and provide for safe and efficient operation of Naval
aircraft, weapon systems, and support equipment (SE).

References
References Listed below are the references needed to manage/monitor the HCCP within
your workcenter.
• NAVAIR 01-1A-17, Aviation Hydraulics Manual

• NAVAIR 01-1A-20, Aviation Hose and Tube Manual
• NAVAIR 17-15E-52, Hydraulic Fluid Contamination Analysis Kit Part
Number 57L414

material.
NAVAIR 01- This manual provides general requirements for maintenance of aircraft
1A-17, Aviation hydraulic systems and related SE. It is applicable to all Marine Corps aircraft
Hydraulics hydraulic systems, airborne hydraulic equipment, and related hydraulic
Manual servicing and test equipment. It is required reading for all military and
civilian personnel at all levels of maintenance performing any hydraulic
maintenance function on Naval aircraft systems, airborne hydraulic
equipment, and related SE.
NAVAIR 01- NAVAIR 01-1A-20 provides aircraft maintenance personnel with information
1A-20, Aviation on hose and tube assemblies for Naval aircraft and aircraft equipment. This
Hose and Tube manual includes the latest NAVAIR approved methods to maintain, fabricate,
Manual repair, test, clean, inspect, identify and store hose and tube assemblies as
replacement items in aircraft and aircraft equipment. As in the NAVAIR 01-
1A-17, it is also required reading. Information in this manual is divided into
two major categories.
Note: The sections below do not apply to liquid oxygen tubing.
Section Category
II through V Flexible hose and hose assemblies
VI through XV Tube and tube assemblies

NAVAIR 17- This technical manual is presented in work package (WP) format. Listed
15E-52, below is the information contained within this manual.
Hydraulic Fluid
Contamination • Description of the fluid contamination analysis kit
Analysis Kit
Part Number
57L414 • Description of how the kit is used to evaluate contamination levels in
Naval aircraft hydraulic systems and related SE
• Components for collecting, processing, and analyzing fluid samples
• A description of kit parts

Introduction The purpose, definition, objectives, and methodology of the Naval Aviation
Maintenance Program (NAMP) are covered in Study Unit 1, Lesson 1
Maintenance Training Plan. The following information pertains to the
Hydraulic Contamination Control Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the HCCP per
of the the NAMP.
Workcenter
Supervisor • Ensure HCCP indoctrination and follow-on training is provided to
personnel.
• Ensure NAVAIR 01-1A-17 and NAVAIR 01-1A-20 are required reading

for indoctrination training for those personnel working on hydraulic
systems.
• Ensure training includes personnel responsibilities and shall be

documented on the NAMP Indoctrination Training sheet (see Study Unit
1, Lesson 1, Maintenance Training Plan) in the individual's
• Ensure all hydraulic component/system repair, disassembly, inspection,

reassembly, and testing are conducted per NAVAIR 01-1A-17 and
NAVAIR 01-1A-20.
• Ensure only authorized fluid dispensing SE is used and maintained in a

high standard of cleanliness. All servicing SE will be equipped with 3-
micron (absolute) filtration.
• Ensure all internal and external hoses on aircraft, SE units used to apply
pressure to aircraft systems, and SE servicing units are marked/etched per
NAVAIR 01-1A-20.
• Maintain high standards of housekeeping where hydraulic maintenance

and sampling are performed.
• Ensure all results from hydraulic samples performed are sent to QA for
hydraulic contamination control trend analysis.

Responsibilities • Maintain the Hydraulic Fluid Contamination Analysis Kit and electronic
of the particle counter in an RFI status.
Workcenter
Supervisor,
• Ensure hydraulic fluid analyses are performed for equipment
continued
preoperational requirements, and during aircraft and SE acceptance
inspections.
• Report suspected contamination to Maintenance Control and QA.
• Whenever aircraft or SE hydraulic system integrity is broken, ensure

fittings, lines, and components are capped/plugged immediately using
approved closures, and are handled and stored in a manner that prevents
damage and contamination.


Hydraulic Contamination Control Program and/or equipment. Follow-on
training will be provided as required.
personnel will be performing. This training shall include, but not be limited
to

• Storage and safe handling of aviation lubrications/samples
• Safety hazards involving ingestion and absorption of lubricants
Reference References involving aviation lubricants are too numerous for your Marines
Publications to truly understand in depth. Therefore, as in all other indoctrination, it
should be tailored to familiarize your Marines in this program and not make
them experts.
Challenge True or False. NAVAIR 01-1A-17 and NAVAIR 01-1A-20 are required
readings.
ANSWER – True. NAVAIR 01-1A-17 and NAVAIR 01-1A-20 are required

reading for indoctrination training for those personnel working on hydraulic
systems. See page 2-79.

Hydraulic Systems
Scope All modern naval aircraft contain hydraulic systems for operation of various
mechanisms. The number of hydraulically operated units depends upon the
model of aircraft, with the average operational aircraft having a dozen or
more hydraulically operated units.
Components A complete aircraft hydraulic system consists of a power system and a

number of actuating systems (subsystems), the exact number dependent upon
the aircraft design. The power system generally includes the following:
• Power supply (pump)

• Fluid supply (reservoir)
• All other components leading up to, but not including, the selector
(directional control) valves
The selector valves direct the flow of fluid to the various actuating units, and
each selector valve is considered a part of its related actuating system.
Separate Current aircraft hydraulic systems require the availability of two separate
Systems power systems for operating the flight controls to ensure required reliability.
One of which may supply fluid power to the utility system as well as to the
flight controls. The utility systems actuate the landing gear, wing fold, wheel
brakes, and other such units.
Functions of Hydraulic fluids in aircraft hydraulic systems are primarily used to transmit
Hydraulic Fluid power, but must perform several additional vital functions as listed below:
• Act as a lubricant to reduce friction and wear

• Serve as a coolant to maintain operating temperatures within limits of
critical sealant materials
• Serve as a corrosion and rust inhibitor
These vital functions may be impaired if the hydraulic system fluid is allowed
to become contaminated beyond acceptable limits.

Hydraulic Systems, Continued
Challenge An aircraft hydraulic system consists of a fluid supply, __________, and all
other components leading up to selector valves.
ANSWER – power supply. See page 2-84.

Hydraulic Servicing Units
Types of Although aircraft hydraulic systems are capable of reliable unattended

Servicing operation for long periods of time, some periodic service is required. Such
service will usually fall into one of the following categories:
• Fluid servicing
• Filter servicing
Fluid Servicing Fluid servicing consists of adding new filtered hydraulic fluid to the system to
replace fluid lost through leakage, system maintenance, or malfunction.
Specific procedures exist for checking hydraulic fluid levels in each model
aircraft. It is important for you to follow the applicable procedures to ensure
system operation at the required fluid level.
Fluid Level Fluid level is generally determined by means of an indicating device at the
Indicators system reservoir. The type of indicator used will vary with the aircraft model.
Listed below are the most commonly encountered indicator styles:
• Sight-glass
• Gage
• Piston
Personnel Only qualified personnel using authorized fluid dispensing equipment must
accomplish all servicing.

Hydraulic Servicing Units, Continued
Fluid Servicing Hydraulic systems and components shall be fluid serviced using equipment
Procedures and procedures that satisfy the following requirements:
• Perform all servicing using approved fluid dispensing equipment equipped

with 3-micron (absolute) filtration.
• Maintain all hydraulic fluid dispensing equipment in a high degree of

cleanliness and store in a clean, protected environment. When not in use,
protect all fittings or hose ends with approved metal closures.
• Use fluid dispensing equipment only with those specific fluids for which
they were intended, and the equipment shall be legibly marked to indicate
the type of fluid. Service hydraulic systems using only the fluid specified.
Take precautions to avoid accidental use of any other fluid.
• Do not leave hydraulic fluid in an open container any longer than

necessary, particularly in dusty environments. Exposed fluid will readily
collect contaminants, which could jeopardize system performance.
• With the exception of fluid cans or drums installed in approved dispensing

units, open cans of hydraulic fluid are prohibited.
• Do not reuse hydraulic fluid drained from hydraulic equipment or

components. Dispose of drained fluid immediately to prevent accidental
reuse.
• In the event hydraulic fluid is spilled on other parts of equipment on the

aircraft, remove spilled fluid using approved wiping materials.

Filter Servicing Replacement of hydraulic filter elements is normally a maintenance operation

performed on a periodic basis. During a routine inspection, you may see an
indication for replacement.
Indication Hydraulic filter assemblies in some aircraft and SE are equipped with
Devices indicating devices (buttons or pins) that will extend when the differential
pressure across the filter exceeds a predetermined value indicating a loaded
element. This means the filter is clogged or is no longer able to absorb
contaminates. Verify the condition of the filter element and replace it if
required.
Note: When checking or changing filter elements, always check the

functioning of any pop-up mechanism.
False/Faulty Should the filter assembly differential pressure indicator continue to extend
Indicators after a new element has been installed, the indicator is probably defective.
Consult the maintenance instructions to determine what corrective action is
necessary.
Minimizing Fill the filter bowl with new filtered hydraulic fluid to minimize the
Introduction of introduction of air into the hydraulic system before installing the new filter.
Air Into System Only use authorized hydraulic fill service units to obtain fluid.
Filter Safety Do not remove the replacement filter element from its protective packing
until just prior to installation. Once removed from packing, carefully handle
the element to protect it from contamination and mechanical damage.

Challenge Maintenance Control has just issued a task for your shop to service Aircraft
02, which has a low hydraulic level indication. You have just received two
new Marines in your shop and are giving them an indoctrination brief when
the job is received. Being involved with the brief, you grab one of your
Marines and tell him to complete the task, and you continue with the brief.
After the brief is over and the Marine comes back to sign off the task.
Maintenance Control calls and tells you the aircraft has had several filter clog
indications. You question the Marine who did the job and find that the
Marine used two cans of hydraulic fluid, one of which he found open in the
shop. Upon finding the can that was found open, you discover a liquid inside
that is totally unidentifiable, not even close to hydraulic fluid.
In your own words, explain where the problem first started and how this
situation could have been avoided.
Answer Some may say the problem started with the Marine using a can of fluid found
open. But truly, the problem started with the workcenter supervisor. Being
so involved with the brief, he avoided insuring proper personnel were
assigned to the job. Is the Marine who serviced the aircraft at fault? Yes.
But the ultimate responsibility falls upon the workcenter supervisor and shall
be viewed so by the command.
If this were you, not only do you have a new task of purging the hydraulic
system of that aircraft, but also you have just lost credibility and your seniors
trust in you as a workcenter supervisor.

Hydraulic Support Equipment
Types of Hydraulic Support Equipment (SE) is equipment intended for use in servicing
Hydraulic and testing hydraulic systems and components. The equipment is used at all
Support levels of maintenance and consists of the following general types:
Equipment
• Portable hydraulic test stands
• Stationary hydraulic test stands
• Hydraulic fluid dispensing equipment
Portable Portable hydraulic test stands are mobile sources of external hydraulic power
Hydraulic Test that can be connected to an aircraft hydraulic system to provide power
Stands normally obtained from the aircraft hydraulic pumps. They provide a means
of energizing the aircraft hydraulic systems for purposes of checkout and
maintenance. These test stands are employed both on the flight line and in
hangar work areas.
Portable test stands are important tools in hydraulic contamination control.

They provide the primary means of aircraft hydraulic decontamination.
Several types of portable stands are available. They differ primarily in their
• Power source (electric motor or engine driven)

• Functional features
• Maximum flow capability

Hydraulic Support Equipment, Continued
Stationary Stationary hydraulic test stands are permanently installed equipment intended
Hydraulic Test for shop testing hydraulic system components. With the exception of
Stands specialized equipment such as hose burst test stands, they are general-purpose
equipment capable of performing a variety of tests on components such as
hydraulic
• Pumps
• Actuators
• Motors
• Valves
• Accumulators
• Gages
Stationary hydraulic test stands are employed at the intermediate maintenance

level, ashore and afloat, and for depot level maintenance.
Purpose Typical component test stands consist of adjustable sources of hydraulic and
shaft driven (for pump drive) power, with the associated regulator and
indicating devices that enable component performance monitoring under
simulated operating conditions.
Hydraulic Fluid Hydraulic fluid dispensing equipment is portable equipment used for
Dispensing replenishing hydraulic fluid lost or otherwise removed from a system. They
Equipment provide a means of dispensing new filtered fluid under pressure, in a manner
that will minimize the introduction of external contaminants. Several
different types are available and described in the hydraulic serving unit
section of this lesson.

Configuration All SE shall conform to the following requirements:
• Equipped with adequate output filtration having a rating of 3-microns

(absolute). The 3-micron filter assembly shall be of a non-bypass variety,
preferably equipped with a differential pressure indicator. Install
immediately upstream of the major fluid discharge ports.
• Portable hydraulic test stands shall be equipped with re-circulation

cleaning manifolds and fluid sample valves to enable self-cleaning and
fluid analysis prior to connection to equipment under test.
Cleanliness Maintain all SE in accordance with the following cleanliness requirements:
• Ensure the highest level of cleanliness is consistent with SE construction

and utilization.
• Keep external fluid connections, fittings, and openings contaminant-free at

all times. Clean surfaces that come into direct contact with working
hydraulic fluid using a non-chlorinated cleaning agent and wiping
materials.
• Protect unused fittings or hose ends with suitable metal dust caps or other
approved closures. Clean polyethylene bags may be used as an interim
measure in the absence of approved metal closures, provided the bags are
adequately secured, protected from physical damage, and prevent the
intrusion of water.
• Store equipment not in service in clean, dry areas. Minimize exposure of

in-service equipment to precipitation, wind-driven sand, or other
environmental contaminants to the greatest extent practicable.

Periodic Supporting activities for hydraulic SE shall perform periodic maintenance at

Maintenance each 13-week interval unless otherwise directed. Maintenance requirements
are as follows.
• Sample all SE reservoirs preferably at a low point drain, and analyzed for
particulate and water content.
• Replace disposable 3-micron pressure line filter only upon actuation of

their differential pressure indicators, because of their large dirt-holding
capacity. Replace disposable filters not equipped with differential
pressure indicators at the prescribed interval.
• Upon completion of periodic maintenance, SE shall have a fluid

contamination level not in excess of Class 3.
Note: Refer to NA 01-1A-20 for maintenance of age-controlled hoses used

in SE.
Fluid Sampling Sampling points and procedures will vary with the SE type and model.
Follow specific procedures applicable to the particular equipment when
available. In instances where specific procedures are not available, perform
sampling in accordance with the sampling procedures in NAVAIR 01-1A-17,
Aviation Hydraulics Manual.
Contamination Contamination analysis of support equipment fluid samples is done using

Analysis electronic particle count testing. The contamination analysis kit may be used
if electronic particle count testing is unavailable or impractical.
Perform decontamination of unacceptable equipment by means of re-

circulation cleaning, purifying, flushing, or purging, as required.
Refer to Section IV of NAVAIR 01-1A-17, Aviation Hydraulics Manual, for

a general discussion of these methods and for specific information to assist in
the selection of the most appropriate method.

Challenge Hydraulic fluid dispensing equipment provides a means of dispensing

___________________.
ANSWER – new filtered fluid under pressure. See page 2-91.

Hydraulic Fluid Sampling
Sample To determine contamination levels, a single fluid sample is required which

Requirements represents the working fluid in the system. It must also provide a worst-case
indication of system particulate level, because the particulate level is not the
same throughout an operating system. The particulate level displays distinct
gradients due to the effects of system components (such as filters) on
circulating particles.
Sampling A fluid sampling point is a physical point in a hydraulic system from which
Points small amounts of hydraulic fluid can be obtained for contamination analysis.
Listed below are physical points for sampling:
• Air bleed valve

• Reservoir drain valve
• Quick-disconnect fittings
• Removable line connections
• Special valves installed for ease of sampling

Hydraulic Fluid Sampling, Continued
Sampling Point A sampling point must satisfy the following requirements:

Requirements
• Obtains fluid sample from a main system return line, pump suction line, or
system reservoir.
• Does not employ reservoir sampling in a system using a reservoir of the

make-up variety, or where the reservoir is bypassed during SE powered
operation.
Note: A make-up reservoir is a configuration in which all system return-

line fluid does not pass through the reservoir. Fluid exchange in
the reservoir is limited and results only from the changes in fluid
volumes that occur elsewhere in the system.
• The sampling point should be
• Usable immediately after flight without requiring the use of external

ground support equipment (GSE). Sampling with the aircraft engines
turning is satisfactory, provided no personnel hazards are involved.
• Usable when the system is being powered by external SE, or

immediately after such operation. To achieve this ensure that the same
flow conditions exist at the selected point in either mode of operation.
• Immediately adjacent or reasonably close to the main body or stream

of fluid being sampled. A minimum amount of static fluid should be
associated with the sampling point and whatever is present should be
readily purged upon initiation of sample flow. This may be
accomplished by dumping an initial quantity of the sampled fluid, but
problems may be encountered where a long line is involved, as in
certain reservoir drain lines.
• Readily accessible and otherwise convenient to use. Sufficient

clearance must exist beneath the valve or fitting to adequately position
the sample collection bottle.
• Easy to operate, and not distort the particulate level of the sampled
fluid either by acting as a filter or by introducing external or self-
generated contaminants.

Hydraulic Fluid Sampling, Continued
Sampling Point • Placed in a location of low sedimentation. When this is unavoidable,

Requirements, discarding an initial quantity of the sample fluid drawn can minimize
continued the effects of such sedimentation. Sample fluid ideally should be
obtained from turbulent high-flow areas.
• Operation of the sampling point shall not introduce any significant

amount of external contaminants into the fluid collected.
• The internal porting of the sampling point shall not impede the passage
of hard particulate matter up to 500 microns in diameter.
• With normal system operating pressures present, the sample fluid flow
rate should range between 100 and 1,000 ml (approximately 3 to 30
fluid oz.) per minute. The flow rate should be manageable, and the
time required to collect the required sample should not be excessive.
• Repeated use of the sampling valve or fitting should not degrade its
mechanical integrity.
Cleanliness Accurate determination of hydraulic contaminant levels requires proper

sampling techniques using equipment and materials that are known to be
clean. Any foreign matter that is allowed to contaminate the sample fluid or
testing equipment will cause erroneous results.
Trend Analysis Forward all results from hydraulic fluid sampling to Quality Assurance for
hydraulic contamination control trend analysis.
Challenge Which of the following is not considered a desirable fluid sample point?
a. Air bleed valve

b. Reservoir drain valve
c. Filter
d. Quick-disconnect valve
ANSWER – c. See page 2-95.

Hydraulic Fluid Analysis
Visual Analysis Before sample processing, carefully give the fluid under test a visual
for Water examination for possible free water. Water can be recognized in hydraulic
Contamination fluid samples in the form of droplets that usually settle to the bottom of the
sample bottle. Listed below is the procedure for visual analysis:
• Allow the fluid sample to remain motionless for 10 minutes or longer.

Formation of visible droplets may appear if water is present.
• Fluid samples that are hazy or pink in appearance indicate the presence of
water.
• If water is observed, take another sample from the system to verify the
indication and initiate corrective maintenance as required.
Contamination Use the Contamination Analysis Kit 57L414, shown in the following figure
Analysis Kit for testing only if electronic particle count testing is not available either
57L414 directly, or through the appropriate supporting I-level activity or NOAP
laboratory.
The equipment uses a patch test method in which a fluid sample of known
size is filtered through a test filter membrane. All particulate matter in excess
of a size determined by the filter characteristics is retained on the surface of
the membrane causing it to discolor an amount proportional to the level of
contamination.

Hydraulic Fluid Analysis, Continued
Contamination
Analysis Kit
57L414,
continued
Electronic The electronic particle counters provide counts of the number of particles in
Particle various size ranges. The counts obtained are compared with the maximum
Counters allowable. Counts exceeding the maximum allowable in any size range
render the fluid unsuitable for use. Operate and calibrate electronic particle
counters in accordance with the appropriate NAVAIR manuals.
Personnel Only personnel with appropriate training shall operate electronic particle
counters or perform sample preparation.

Hydraulic Fluid Analysis, Continued
Electronic There are two common particle counters used within Marine aviation. Both
Particle units use the principle of light extinction to determine particle size. Meaning
Counter light shines through sample fluid to a photo detector.
Description
As the fluid from the sample flows pass the photo detector at a constant rate, a
particle in the fluid blocks the light and create a shadow that reduces the
intensity of light shining on the photo detector. The bigger the shadow, the
larger reduction in light intensity.
The sensor measures the change in light intensity as particles in the fluid flow
pass the flow cell, determining the amount of contamination in the fluid.
Preparation After you collect the fluid sample, attach a label including the information
and Delivery of below to the sample bottle:
Samples
• Sample taker's name
• Activity
• Phone number
• Name and identifying numbers of the aircraft/SE hydraulic system sample
• Date and the time sample was collected
Deliver properly labeled samples to supporting I-level or NOAP laboratory

for testing.
Challenge Use the Contamination Analysis Kit 57L414 only if __________________.
ANSWER - electronic particle count testing is not available. See page 2-98.

Hydraulic Contamination
Introduction Hydraulic fluid contamination may be described as any foreign material or

substance whose presence in the fluid is capable of adversely affecting system
performance or reliability.
Suspected Report all suspected contamination to Quality Assurance and Maintenance

Contamination Control for follow-up.
Types of Contamination may assume many different forms including the following:
Contaminates
• Particulate matter (solids)
• Fluids/liquid
• Gas/air
These contaminates degrade hydraulic system performance and component

life. The following pages will describe in detail these types of contaminates.

Particulate Contamination
Types of Solid matter is the type most often found in aircraft hydraulic systems and is
Particulate generally referred to as particulate contamination. Listed below are the most
Contamination common types of particulate matter contamination:
• Organic
• Metallic
• Inorganic
Organic Organic solids or semi-solids found in hydraulic systems are produced by

wear, oxidation, or polymerization. Small particles of O-rings, seals, gaskets,
and hoses are present due to wear or chemical reactions. Synthetic hydraulic
fluids produce small wear particles. The oxidative rate of hydraulic fluids
increases with pressure, temperature, and the presence of system contaminates
(wear particles, water, or dirt).
Metallic Metallic contaminants are almost always present in hydraulic systems and
range in size from microscopic particles to particles readily visible to the
naked eye. Metallic contaminants are produced in the following ways:
• Wear and scoring of bare metal parts and plating materials such as silver
and chromium.
• Continuous high-speed internal movement of hydraulic pumps.
• Body wear and the chipping and wearing away of small pieces of metal
plating materials from hydraulic system components such as hydraulic
valves and actuators.
These wear products and other foreign metal particles also act as metallic
catalysts in the formation of oxidation products.

Particulate Contamination, Continued
Inorganic This contaminant group includes:
• Dust
• Paint particles
• Dirt
• Silicates
• Oil oxidation
Dust, Dirt, and Atmospheric dust, dirt, paint particles, and other materials are often drawn
Paint into the hydraulic systems from external sources.
Silicates Glass particles from glass bead peening and blasting may also be found as
contaminants. Glass particles are very undesirable contaminants due to their
abrasive effect on synthetic rubber seals and the very fine surfaces of critical
moving parts.
Oil Oxidation Oil oxidation products are the result of oxidation within the fluid. They
appear as organic acids, asphaltics, gums, and varnishes. They are not
abrasive alone, but they will result in system degradation. These products
combine with particles in the hydraulic fluid to form sludge. Some oxidation
products are oil soluble and cause the hydraulic fluid to increase in viscosity.
Other oxidation products are not oil soluble and form sediment. The resulting
sludge or varnish-like materials will collect at close-fitting moving parts, such
as the spool and sleeve on servo valves, causing a sluggish valve response.

Particulate Contamination, Continued
Effects of Contamination of hydraulic fluid with particulate matter is one of the

Particulate principal causes of wear in hydraulic pumps, actuators, valves, and servo
Matter valves.
Contamination
• Large metallic or hard nonmetallic particles will collect at the seal area,
and the scraping action of the particle may groove the inside wall of the
actuator body.
• Small particles act as abrasives between seals and actuator body causing
general wear and scoring.
• Wear and scoring will eventually cause excessive fluid leakage and
possible seal failure due to extrusion of the seal into the enlarged gap
between the piston head and the bore of the actuator body. Once the
abrasive material begins to wear the actuator body, the process will
continue at an increasing rate because the wear particles add to the
available abrasive material.
• Metallic or nonmetallic particles may lodge in the poppets and poppet seat
portions of valves and cause system malfunction by holding valves open.
Challenge Why are glass particles considered a danger in hydraulic systems?
ANSWER – Because of their abrasive effect on synthetic rubber seals and the
very fine surfaces of critical moving parts. See page 2-103.

Fluids/Liquid Contamination
Types of Fluid contamination consists of more than just water. Other types of fluids
Fluids/Liquid can be introduced into the system through various means and stand to degrade
Contamination the system as a whole. This contamination can be broken into two types:
• Water
• Foreign fluid
Water Water is a serious contaminant of hydraulic systems and typically collects in

Contamination filter bowls and at other more critical locations. Hydraulic fluids are
adversely affected by dissolved, emulsified, or free water. Listed below are
cause and effect of water contamination:
Cause Effect
Formation of ice or Impedes fluid flow, operation of valves, actuators
oxidation products or other moving parts.
Corrosion of metallic Destroys surfaces.
surfaces
Formation of Clog filters and become detrimental to hydraulic
microorganisms system performance.
Water Water formation can occur through

Formation
• Condensation from air entering vented systems
• Separation from hydraulic fluids
Take corrective action to remove all free or emulsified water from hydraulic
systems.

Fluids/Liquid Contamination, Continued
Foreign Fluid Foreign fluids other than water and chlorinated solvents can seriously
Contamination contaminate hydraulic systems. This type of contamination, although rare, is
generally a result of lube oil, engine fuel, or incorrect hydraulic fluid having
been introduced inadvertently into the system during servicing.
Some models use hydraulic oil coolers that result in fuel intrusion within the
hydraulic system when leaky.
Effects of The effect of foreign fluids other than water on a hydraulic system will
Foreign Fluid depend upon the nature of the contaminant. The effects of such
Contamination contamination may range from mild to severe depending upon the
contaminant, the amount in the system, and how long it has been present.
Challenge Where does water contamination typically collect within the hydraulic
system?
ANSWER - In filter bowls and at other more critical locations. See page 2-
105.

Gas/Air Contamination
Introduction Hydraulic fluids are adversely affected by dissolved, entrained, or free air.
The following paragraphs describe how this type of contamination may be
introduced into a hydraulic system.
Sources of Listed below are the most common sources of contamination:

Contamination
• Improper maintenance
• Faulty system design
• “Built in” sources
• Improper use of SE
Improper Air may be introduced through improper maintenance or as a result of system

Maintenance design. Any maintenance operation that involves breaking into the hydraulic
and Faulty system, such as disconnecting or removing a line or component, will
Design invariably result in some air being introduced into the system.
You must minimize this source of air contamination by pre-filling

replacement components with new filtered fluid prior to installation.
“Built In” Most aircraft hydraulic systems have "built-in" sources of air. Leaky seals in
Sources gas-pressurized accumulators and reservoirs can feed gas into a system faster
than it can be removed, even with the best of maintenance. Air can also be
passed in pass unpressurized rod seals. This occurs if only one side of a
tandem actuator is powered, the surface is moved by hand, or the surface
droops after shutdown. Moving a flight control surface while un-pressurized
can produce a vacuum and cause a significant amount of air to be pulled in
passed the actuator rod seals.

Gas/Air Contamination, Continued
Improper Use Improper use of SE is another major source of air. An improperly used
of SE service unit or portable hydraulic test stand can introduce large amounts of air
into a system. It is extremely important that hydraulic SE and their service
hoses be properly deaerated prior to aircraft connection.
Effects of Free or entrained air affects the system in many ways.

Gas/Air
Contamination If the fluid supplied to a pump has high air content, resulting cavitation can
cause severe mechanical damage within the pump and partial or complete loss
of output pressure. A temporary pressure loss in many of our present
systems, because of the resulting loss of "bootstrap" pressure, can prevent the
pump from repriming itself.
Air elsewhere in the system generally manifests itself in the form of slow or
erratic actuator movement, sometimes accompanied by vibrations that may be
felt and/or heard.
Air can also damage a system in less obvious ways. Air entrained in the fluid
has been shown to cause erosion of metering orifices and servo valves, as
well as high fluid temperatures. High temperatures can result in fluid
breakdown, as well as the hardening of seals and attendant leaks.
Challenge How can you reduce air contamination within hydraulic systems when
replacing filters?
ANSWER – By pre-filling with filtered hydraulic fluid. See page 2-107.

Hoses
Types of Hoses Two basic hose types used in military aircraft and related equipment are
• Synthetic rubber
• Polytetrafluoroethylene (Teflon)
Synthetic Synthetic rubber hoses are designed for specific fluid, temperature, and
Rubber Hoses pressure ranges. The diagrams below illustrate authorized hoses.
Low-Pressure
Synthetic
Rubber Hose
MIL-H-5593
Low-Pressure
Synthetic
Rubber Hose
MIL-DTL-6000
Medium-
Pressure
Synthetic
Rubber Hose
MIL-H-8794

Hoses, Continued
High-Pressure
Synthetic
Rubber Hose
MIL-H-8788
Bulk Hoses Synthetic rubber hose, (if rubber covered) is identified by indicator stripes
Identification and markings that are stenciled along the length of the hose. The indicator
stripes, also called the lay line because of its use in determining the
straightness or lie of a hose, are a series of dots or dashes. The markings are a
series of letters and numerals repeated at 9-inch intervals.
Light Weight
Medium-
Pressure
Synthetic
Rubber Hose
MIL-H-83797
Lightweight, The lightweight, medium pressure, synthetic rubber hose has a steel-braided
Medium outer cover and is identified by a band attached near each end. It has an
Pressure, additional band near the center of the hose if the bulk length is more than ten
Synthetic feet.
Rubber Hose
Identification

Hoses, Continued
Example
Polytetrafluoro Teflon hoses are also designed for specific temperature and pressure ranges.
-ethylene They are not affected by fuel, lubricating oil, water, alcohol, hydraulic or
(Teflon) Hoses pneumatic systems, or solvents commonly associated with aviation use.
Although various fluids used in synthetic rubber hoses do not affect Teflon,
do not interchange the two types indiscriminately, when replacing a hose.
Medium-
Pressure PTFE
Hose MIL-H-
27267

Hoses, Continued
High-Pressure
PTFE Hose
MIL-H-83298
Identification Polytetrafluoroethylene (Teflon) hose is identified by metal or pliable plastic

bands at hose ends and at 3-foot intervals along the length of the hose.
Example
MANUFACTURER ACME
MANUFACTURER’S CODE 0840B
PART NO. WITH DASH (SIZE) NO. AB123-10
LOT NO. 16160
OPERATING PRESSURE 3000 PSI
MILITARY SPECIFICATION MIL-H-83298
WIRE BRAID COVERED PTFE HOSE LABEL
Challenge The two basic hose types are synthetic rubber and _______________.
ANSWER – Polytetrafluoroethylene (Teflon). See page 2-109.

Tubing
Uses Tube assemblies are fabricated from rigid tubing and associated fittings to
transport fluid or gas (usually under pressure) between various components of
the aircraft system.
Tube assemblies, fabricated with aluminum alloy, CRES, and titanium tubing,
are used in aircraft for fuel, oil, oxidizer, coolant, breathing oxygen,
instruments, hydraulic, and vent lines.
Types Listed below are the most common types of tubing:
• Corrosion-resistant steel (CRES) tubing for high pressure

• Aluminum alloy tubing for high pressure and general purpose
The tubings listed below are presently being incorporated into new model
aircraft:
• CRES 21-6-9
• Titanium alloy 3AL-2.5V
Corrosion- CRES tubing is used in high-pressure hydraulic systems (3000 psi and above)
Resistant Steel such as landing gear, wing flaps, and brakes. CRES tubing does not have to
be annealed for flaring or forming. In fact, cold working and consequent
strain hardening strengthens the flared section.
Aluminum Aluminum alloy tubing is used for both high-pressure and general-purpose
Alloy lines however, it is limited in certain areas of airborne hydraulic systems.
Refer to the applicable drawing and the illustrated parts breakdown to
determine the correct tubing for a particular system.

Tubing, Continued
CRES 21-6-9 Titanium tubes and fittings in naval aircraft are subject to corrosion attacks.
and Titanium Some of these are listed below:
alloy 3AL-2.5V
• Chlorine gas from chlorine storage tanks or bleaching powder
• Hydrochloric acid from rust removers
• Pickling solutions
• Floor cleaners
• Sulfuric acid from batteries
These chemicals attack titanium parts at various speeds, degrees, and

temperatures. Repair and fabrication of assemblies using these materials may
require special procedures. Refer to applicable maintenance directives for
specific details.
Challenge CRES tubing is used in high-pressure hydraulic systems with a pressure of

__________, such as landing gear, wing flaps, and brakes.
ANSWER - 3000 psi and above See page 2-113.

Approved Closures
Introduction Contamination caused by entry of foreign matter into open lines and parts of
hydraulic system equipment is hazardous and expensive. To protect
hydraulic systems from contaminants, always use protective closures when
appropriate.
Improper maintenance practices can have enormous contamination results.

Always refer to the appropriate manuals when conducting hydraulic
maintenance.
Types of Listed below are two types of protective metal closures approved for sealing
Closures hydraulic equipment.
• Caps
• Plugs
These closures conform to the appropriate military and industry

specifications.
Protective Listed below are general guidelines for selection and use of protective
Closure closures for hydraulic equipment:
Applications
• Use caps and plugs of the proper size and material.
• Use closures of metal construction conforming to specifications for sealing

hydraulic system equipment, lines, tubes, accessories and components
except as external closures for shipping and storage.
• Use metal protective closures to seal open ports of all hydraulic lines and
accessories.
• Use metal protective closures to seal new and reusable hydraulic tubing
and hose assemblies.
• Keep all protective closures clean, sorted by size, properly identified, and
stored in readily accessible bins.

Approved Closures, Continued
Protective • Check protective closure visually for cleanliness, thread damage, or

Closure sealing deformation before using.
Applications,
continued
• Use rubber, plastic, or unthreaded type protective closures designed to fit
over open ends of bulk hose and tubing in accordance with design function
only. Do not use this type of protective closure as a plug for insertion into
open lines, hoses, or ports of hydraulic equipment.
• Remove protective closures before installing equipment. If an opening

normally requiring protection is found uncovered, clean and check the part
or assembly before installation or assembly.
Note: Plastic closures may be used to seal electrical fittings and receptacles
or other non-fluid openings where contamination is not considered a
problem.
Challenge True or False. Plastic closures may be used to seal all hydraulic lines.
ANSWER – FALSE. Plastic closures may be used to seal electrical fittings

and receptacles or other non-fluid openings where contamination is not
considered a problem. See page 2-116.

Lesson 4 Exercise
Directions Complete exercise items 1 through 12 performing the actions required.

Item 1 The purpose of the Hydraulic Contamination Control Program is to establish

techniques to achieve and maintain a satisfactory level of fluid purity in
hydraulic systems and provide for safe and efficient operation of naval
__________, __________, and _____________.
Item 2 Which two references are required reading for all personnel involved in any
level of hydraulic maintenance? Mark all that apply.
a. if 2 and 3 are correct

b. if 1 and 2 are correct
c. if 3 and 4 are correct
d. if 1 and 3 are correct
1. NAVAIR 01-1A-17, Aviation Hydraulics Manual

2. NAVAIR 01-1A-20, Aviation Hose and Tube Manual
3. NAVAIR 17-15E-52, Hydraulic Fluid Contamination Analysis Kit Part
Number 57L414
4. OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)
Item 3 As part of your responsibilities as workcenter supervisor, what are your two
main concerns when Marines are performing hydraulic maintenance
involving breaking the integrity of hydraulic lines?
______________________________________________________________
______________________________________________________________
______________________________________________________________.

Item 4 What are the three general parts of the power system when dealing with
hydraulic systems?
a. Power supply, fluid supply, and selectors

b. Selector supply, power supply, and fluid supply
c. Pressure indicator, power supply, and fluid supply
d. Power supply, fluid supply, and all other components leading to, but not
including the selector valves
Item 5 You should always check the functioning of any _________ when checking
or changing filter elements.
Item 6 How many weeks interval are there between periodic maintenance for
hydraulic SE?
a. 3 weeks
b. 3 months
c. 13 weeks
d. 13 months
Item 7 A hydraulic fluid sample should be obtained from a main system return line,
pump suction line, or _______________________.
Item 8 Hydraulic fluid analysis is performed by using a Contamination Analysis Kit

or ____________________________.

Item 9 Through Matching: For items 9 through 11, match the contaminate in column 1 with its
Column 1 Column 2
Contaminate Definition
____9. Particulate matter a. Dissolved, entrained, and/or free

____10. Fluids/Liquid b. Organic, inorganic, and metallic
____11. Gas/Air c. Forms ice and/or oxidation
products
Item 12 Name the two basic types of hoses used in military aircraft and related
equipment.
____________________________ and _________________.
Item 13 Corrosion-Resistant Steel (CRES) and Aluminum Alloy are the two most
common types of tubing used. Name the other two types which are being
incorporated into new model aircraft.
______________________ and ____________________.
Item 14 Name the two types of approved closures.
_________ and _________.
Item 15 When may plastic type closures be used?

________________________________________________________.


1 aircraft, weapon 2-78
systems, and SE
2 b 2-79
3 Introduction of air and 2-82
contamination into the
system and use of
approved closures.
4 d 2-84
5 Pop-up mechanisms 2-88
6 c 2-93
7 system reservoir 2-96
8 electronic particle 2-98
counter
9 b 2-102
10 c 2-105
11 a 2-107
12 Synthetic rubber and 2-109
polytetrafluoroethylene
(Teflon)
13 CRES 21-6-9 and 2-113
Titanium alloy 3AL-
2.5V
14 Caps and plugs 2-115
15 Plastic closures may be 2-116
used to seal electrical
fittings and receptacles
or other non-fluid
openings where
contamination is not
considered a problem.
Lesson In this lesson, you learned how to manage/monitor the HCCP within your
Summary workcenter. In the next lesson, you will learn about the Tire and Wheel
Maintenance Safety Program.

LESSON 5
TIRE AND WHEEL MAINTENANCE SAFETY PROGRAM
Introduction
Scope This program is of special interest to the safety of personnel involved in

maintenance, transportation, and storage of tires/wheels. Because of their
explosive hazards, all assemblies must be treated with the same care given to
live ordnance. Many Marines are unaware of this hazard. Improper training,
carelessness and/or improper maintenance can lead to deadly consequences.
Safety must be stressed to your personnel involved in any facet of tires/wheel
maintenance.
• Guidance needed as a workcenter supervisor to monitor the Tire and

Wheel Maintenance Safety Program within an aviation maintenance
activity.
• Proper procedures for managing a Tire and Wheel Maintenance Safety

Program within your workcenter.

Objectives
• Identify the purpose of the Tire and Wheel Maintenance Safety Program.
• Identify the references used to monitor the Tire and Wheel Maintenance
Safety Program.
• Determine the responsibilities of the workcenter supervisor in the Tire and

Wheel Maintenance Safety Program.
• Identify the safety procedures involving tire and wheel assemblies.
• Match tire and wheel components with the appropriate definition.

Topic See Page

Introduction 2-121
Purpose 2-123
References 2-124
Aircraft Tires 2-130
Aircraft Tire Servicing 2-134
Support Equipment Tires 2-138
Wheel Assemblies 2-141
Bearings 2-143

Purpose
Introduction The purpose of the Tire and Wheel Maintenance Safety Program is to
establish policies, responsibilities, and requirements for implementing
procedures for maintaining and storing aircraft, SE, and Armament Weapons
Support Equipment (AWSE) tires and wheels in all Navy and Marine Corps
aviation activities.
Scope This program is essential to equipment and personnel safety. Mishandling of

aviation tires and wheels can result in the injury or death of aviation
maintenance personnel. Many accidents have been caused by failure to
follow established tire/wheel maintenance procedures and safety precautions,
usually due to inadequate training and supervision.

References
List of You must be thoroughly familiar with the required reference materials needed
References to monitor a Tire and Wheel Maintenance Safety Program within your
workcenter. Although there are many references pertaining to the Tire and
Wheel Maintenance Safety Program, listed below are the references covered
in this lesson. For a full list of required references, refer to OPNAVINST
4790.2H Naval Aviation Maintenance Program, Volume V, Chapter 7.
• NAVAIR 04-10-506, Aircraft Tires and Tubes

• NAVAIR 04-10-1, Aircraft Wheels
• NAVAIR 01-1A-503, Maintenance of Aeronautical Antifriction Bearings
• NAVAIR 17-1-129, Support Equipment Tire and Wheel Assemblies
• OPNAVINST 4790.2H Naval Aviation Maintenance Program

material.
NAVAIR 04- This manual provides instruction for inspection, maintenance, storage, repair,
10-506, Aircraft and disposition for all aircraft tires and tubes. It is intended to conserve time
Tires and and materials by serving as a basic guide for all personnel concerned with
Tubes aircraft tires and tubes. Also, it is intended for use on all pneumatic tires and
inner tubes installed on Naval/Marine aircraft.
The manual is periodically updated to revise inspection criteria, service life

criteria and maintenance procedures. The instructions in this manual take
precedence over all other directives where conflict exists.
NAVAIR 04- This manual establishes a uniform maintenance program for all Naval aircraft
10-1, Aircraft wheels to reduce in-service failures and prolong the service life of all aircraft
Wheels wheels. The maintenance plan consists of the following main features:
• Specific maintenance requirements for all levels of maintenance
• Eddy current inspection of certain wheels at intermediate and depot levels

of maintenance
• Establishment of overhaul rejection criteria

NAVAIR 01- This manual covers the handling and maintenance of a bearing from the time
1A-503, it is received from the manufacturer, through its entire operational life, and
Maintenance of until it is finally rejected as unfit for aeronautical or industrial use. It includes
Aeronautical the following areas:
Antifriction
Bearings
• Removal, cleaning, limited rework, inspection, gaging, lubrication and
installation procedures
• Storage requirements for uninstalled new and processed bearings
• Maintenance requirements while the bearing is in a subassembly in supply

stock and during operational life in the aircraft
• Bearing protection measures necessary during repair of the aircraft
NAVAIR 01- This manual has been prepared with two primary objectives in mind:
1A-503,
Primary • Provide sufficient bearing removal, handling, and installation and
Objectives maintenance instructions to protect and preserve precision and
performance capabilities originally built into the bearing.
• Prescribe procedures and processes for the reuse of the many bearings that
have useful life expectancies far exceeding the design life of the
equipment in which they are installed.

NAVAIR 17-1- This manual provides maintenance, inspection, repair, and safety procedures
129, Support for tire/wheel and bearing assemblies used on aviation support equipment.
Equipment Tire It is further intended to develop guidelines and procedures for training and
and Wheel certification of SE personnel as Tire/Wheel Maintenance Technicians.
Assemblies
NAVAIR manuals shall take precedence over conflicts with other manuals.
Challenge One of the purposes of the NAVAIR 01-1A-503, Maintenance of

Aeronautical Antifriction Bearings, is to provide sufficient bearing removal,
handling, installation and maintenance instructions to protect and preserve
precision and ______________originally built into the bearing.
ANSWER - performance capabilities. See page 2-125.

covered in Study Unit 1 Lesson 1, Maintenance Training Program. The
following information pertains to the Tire and Wheel Maintenance Safety
Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the Tire and
of the Wheel Maintenance Safety Program as per the NAMP.
Workcenter
Supervisor • Ensure Tire and Wheel Maintenance Safety Program indoctrination and
follow-on training is provided to personnel.

1, Lesson 1, Maintenance Training Program) in the individual's
• Ensure all personnel performing tire/wheel maintenance are instructed to

handle inflated and partially inflated wheel assemblies with the same
respect and care as live ordnance, due to an explosive nature of gas under
pressure.
• Ensure the Aircraft Tires, Tubes and Wheels Inflation/Deflation Safety

Precautions Poster (C12G1-1163 Rev. Mar 98) is displayed in work
centers performing tire/wheel maintenance functions.
• Ensure bearings are protected from careless handling and contamination

from abrasives, improper greases, solids, fluids, and salt water per
NAVAIR 01-1A-503.
• Ensure all personnel certified by a previous command on the same T/M/S

aircraft/SE/AWSE tires/wheels pass the written examination and
demonstrate practical proficiency to a certified tire/wheel QAR.
• Ensure all previous certification records are retained in the individual’s


Introduction Indoctrination training shall be provided to all personnel involved with tire
and wheel maintenance. Follow-on training shall be provided as required.

• All associated safety hazards
• Proper handling/protection of bearings
• Identification of inflated/deflated tires
• Transportation of tire/wheel assemblies
Special emphasis must be placed on hazards associated with

aircraft/SE/AWSE tires/wheels.
Reference References involving Tire and Wheel Maintenance Safety are too numerous
Publications for your Marines to truly understand in depth. Therefore, as in all other
indoctrination, tailor it to familiarize your Marines in this program and not
make them experts.

Indoctrination and Follow-on Training, Continued
Challenge As workcenter supervisor, one of your main responsibilities is to ensure the

safety of your personnel. What is one of the things a Marine should know but
may not be aware of when it comes to the dangers involving tire and wheel
maintenance?
ANSWER – Wheel and tire assemblies, either fully inflated or partially

inflated, have an explosive danger to them because of the compressed gases
and design of some wheel assemblies. See page 2-127.

Aircraft Tires
Introduction The primary purpose of an aircraft tire is to provide mobility for the aircraft
when on the ground. In addition, they assist the shock strut in reducing the
impact of landing, absorb much of the roughness of takeoff, and provide
traction for stopping.
Safety Postings Display the Aircraft Tires, Tubes and Wheels Inflation/Deflation Safety
Precautions Poster (C12G1-1163 Rev. Mar 98) in workcenters performing
tire/wheel maintenance functions. Obtain posters by contacting:
• COMMANDER, NAVAL SAFETY CENTER, 375 A STREET,

NORFOLK VA 23511-4399
• Web site: www.safetycenter.navy.mil
Types Pneumatic aircraft tires, both bias and radials, are supplied as tubeless and
tube-type tires. Most Type VII and VIII tires supplied to the Marine Corps
must meet more stringent test requirements of various military standards. The
table below list types of bias and radial tires:
Type Description
III Have beads of smaller diameter, larger volume, and lower
Low Pressure pressure.
VII Currently in universal service on today’s military and
Extra High civilian jets and propjets. It has a high load capacity and
Pressure narrow width.
VIII Design created for very high takeoff speeds. It has a high
Low Profile load capacity and is wider than a comparable Type VII
High Pressure tire.
Radial Designed with the casing plies running radially from bead
to bead, and fabric plies running circumferentially under
the tread.

Aircraft Tires, Continued
Sectional View The diagrams below show types of bias and radial tires.
of Tubeless and
Tube Type
Tires

Sectional View
of Radial
Aircraft Tire
Showing
Construction
Details
Sectional View
of Bias Aircraft
Tire Showing
Construction
Details

Retread Most military and commercial aircraft tires are designed to be retreaded.
Retreading an existing casing can provide more landings per tire at a lower
cost per tread, giving a significantly lower overall cost. Data shows that a
retreaded tire gives service comparable to a new tire.
Policy mandates aircraft tires will be retreaded in all cases without affecting
safety of personnel and/or equipment.

Aircraft Tire Servicing
Tire Failures Aircraft tire inspection and maintenance has become more critical through the
years because of increased aircraft weight and higher landing and takeoff
speeds. Carrier operations place extra demands on tire maintenance. In many
cases tire failures are attributed to material failures, and/or manufacturing
defects, when actually improper maintenance was the underlying cause.
Poor inspection, improper buildup, operation of tires in an under inflated or

over inflated condition is common causes of tire failure.
The two primary types of aircraft tire servicing inspections are turnaround
and daily.
Turnaround When performing a turnaround inspection, first perform a daily inspection

Inspection then follow the procedure below:
• Examine tires and wheels for damage that may have been caused during or
after the previous flight.
• Adhere to safety precautions during inspections.
• Replace defective tire and wheel assemblies and those of questionable

suitability.
Daily Examine tires during daily inspections for the following conditions:
Inspections
• Correct inflation pressure
• Defective or damaged valves
• Installation of valve cap
• Tire slippage
• Extent of tread wear
• Uneven tread wear
• Separations/bulges
• Cuts and embedded objects
• Contact with deteriorating fluids
• Sidewall damage
• Tread damage
• Tire clearance

Aircraft Tire Servicing, Continued
Tire Inflation Use water pumped nitrogen A-A-59503, Type I, Grade B, Class 1 to inflate
tires. When nitrogen is not available use dry, oil-free air.
Nitrogen The NAN-3 is a mobile nitrogen trailer, some of which are equipped with a
Servicing Carts special tire-servicing panel located atop the right fender. The tire-servicing
panel has an inflation range of 0-600 psi. For the proper operation of the
NAN-3, consult NAVAIR 19-25B-15 and the operating instruction plates
attached to the vehicle.
Flight line nitrogen is also provided by a number of mobile nitrogen carts like
the NAN-2. Tire shops are generally equipped with a bulkhead outlet or
through a series of nitrogen bottles and a manifold system. For remote or
confined areas the portable high-pressure cylinder, P/N 60A80D1 is available.
Consult the applicable handbooks for the proper operation of this equipment.
WARNING: DO NOT pressurize a tire directly from a nitrogen cart or

other pressure source without the use of a tire inflator
assembly kit, or tire inflator/monitor. An explosion may
result in an over-inflated tire.
Tire Pressure Maintaining the correct inflation pressure in an aircraft tire is essential in
Checks obtaining maximum service life. Nitrogen will diffuse through the materials
of aircraft tires resulting in a daily pressure loss and the need for frequent
checks. Listed below are rules for pressure checks.
• Check tire pressures exceeding 50 psi on operating aircraft during each

daily inspection.
• Check tire pressures exceeding 50 psi on inactive aircraft at least once

every 7 days.
• Do not check pressures by visually inspecting the deflection of the tire.
• Use an approved, calibrated, dual chuck stem gage kit to perform pressure
checks.

Consequences Under inflation is the single most frequently occurring tire problem. Under-
of Under- inflation causes the tire to wear rapidly and unevenly at the outer edges of the
inflation tread. Operation of a tire in an under-inflated condition will cause the tire to
flex beyond its design parameters. This excessive flexing causes heat buildup
in the casing causing the eventual breakdown of tire components resulting in
failures by blowout or thrown tread.
Squadrons experiencing a high number of blowouts should institute a

program of closely monitoring their tire inflation pressures. Additionally,
check the gages used to measure tire pressures to ensure they are properly
calibrated.
Consequences Over inflation reduces the tread contact area causing the tire to wear faster in
of Over- the center. Operation of over-inflated tires can result in reduced traction and
inflation make the tread more susceptible to cutting.

Examples of The diagram below provides an example of various types of tire wear:
Tire Wear
Challenge Under no circumstances will a tire be pressurized directly from a

_________or other pressure source without the use of a tire inflator assembly
kit, or tire inflator/monitor.
ANSWER - nitrogen cart. See page 2-135.

Support Equipment Tires
Scope This section will cover rim, tire types, and proper procedures for support
equipment (SE) tires maintenance and care.
Many of the same principles of aircraft tires apply to SE tires.
Rim Types The three types of rims used on SE are listed below:
• Solid rim
• Split rim
• Demountable flange (split ring)
Solid Rim Solid rims are made in one piece and permanently fastened to the wheel hub.
They feature a well in the center that permits mounting and demounting of the
tire. This type rim is often referred to as a drop center rim, and is generally
used on smaller vehicles and light trucks.
Split Rim Split rims consist of two, usually identical, halves secured together by tie
bolts. They are usually mounted on handling equipment, small trailers, and
front wheel assemblies of towing tractors.
CAUTION: Do not mix steel and aluminum halves when assembling split
rim wheels. Mixing types of wheel halves may cause cracks
and wheel failure.
Demountable The demountable flange (split ring) holds the tire by interlocking with the rim
Flange base when the tire is inflated. This rim is used on rear axles of towing
tractors and similar heavy-duty vehicles. Rims are mounted with the
demountable flange outboard on single wheel installations, and facing each
other on dual wheel installations whenever possible.

Support Equipment Tires, Continued
Types of Tires The four types of tires used on SE are listed below:
• Bias ply
• Bias belted
• Radial
• Solid rubber
Bias Ply Tire cords are arranged in two or more (even number) plies, depending on the
strength desired in the finished tire. The cords, or plies, cross the tire
circumference at an angle, usually 30-40 degrees. This design provides
rigidity in both sidewall and tread.
A disadvantage bias ply tires is that they squirm more and tend to run hotter
than belted bias or radial tires.
Bias Belted Constructed similarly to the bias ply, belted tires have additional two or more
layers of fabric (belts) under the tread. The cords in the belt also run at an
angle, about 25 degrees to the circumference.
This construction provides the sidewall stiffness of the bias ply with increased
strength and stiffness in the tread. The bias belted tires squirm less, run
cooler, and give better mileage than the bias ply.
Radial Radial tires are constructed with one to three plies of the body cords running
at right angles to the circumference. Over this radial section is an added belt,
or belts of fabric or steel.
The design provides a tire with flexible sidewalls but great stiffness in the
tread area. It has minimum squirm, runs cool, and provides long wear.
Tubeless Tires Tubeless tires may be any of the three types. In addition they have a thin
rubber lining and the bead area is grooved to form an airtight seal with the
rim.

Support Equipment Tires, Continued
Solid Rubber Solid rubber is used primarily on slow moving, heavy loading equipment. It
provides far less cushioning than pneumatic tires but offers a far greater
loading capacity than other comparable sized pneumatic tires.
Safety Never take tire/wheel assemblies used on SE for granted. The same respect
Precautions must be given to them as live ordinance. Mishandling can lead to serious
injury or death.
Observe the following general precautions at all times:
• Conspicuously display appropriate safety posters in any workcenter

assigned tire/wheel maintenance.
• Only fully qualified personnel assigned to the tire/wheel program shall

work independently of qualified supervision.
• Periodic observation of qualified technicians and supervisors by QA

inspectors is recommended.
Challenge The same respect must be given to SE tires, as with aircraft tires, as
____________.
ANSWER - live ordinance. See page 2-140.

Wheel Assemblies
Scope Modern aircraft wheels are among the most highly stressed parts of an
aircraft. High tire pressures, cyclic loadings, corrosion, and physical damage
imposed by improper handling contribute to fatigue failures in aircraft
wheels. Complete fatigue failure in an aircraft wheel can be catastrophic.
When this type of failure occurs, the wheel fragments are often propelled
several hundred feet. Final failure of an aircraft wheel usually occurs during
taxi of a fully loaded aircraft.
Storage and RFI aircraft tire/wheel assemblies shall not exceed 100 pounds PSIG or 50
Transportation percent of test pressure; whichever is less, while being stored.
Pressures
All RFI tires being transported off station shall not exceed 25 pounds PSIG of
pressure.
Removal of When the removal of a wheel assembly is required, the following procedure
Wheel shall apply:
Assemblies
• Jack up the aircraft landing gear in accordance with applicable
instructions.
• Remove the valve cap and deflate the tire using approved deflation kit.
• Install deflated tire flag.
• Remove the wheel and tire assembly in accordance with the applicable
instructions.
CAUTION: Completely deflate the tire before removing the tire deflation
kit. Do not attempt to remove an aircraft tire assembly until
the tire is deflated, the valve core removed, and the deflated
tire flag is installed.

Wheel Assemblies, Continued
Installation of Install the wheel/tire assembly on aircraft in accordance with the applicable
Wheel instructions for the specific aircraft.
Assemblies
Inspect the assembly for the correct
• Tire size
• Ply rating
• NSN and the correct wheel part number
Verify the presence of an engraved or embossed serial number on the tire’s

sidewall before using on aircraft.
Ensure the wheel bearings, bearing cups, and wheel bores are
• Cleaned
• Inspected
• Packed with grease in accordance with NAVAIR 04-10-1
Ensure the axle nut has proper torque and is safety wired.
Challenge One of your Marines has just deflated a tire for removal. What must be
installed before removal of the wheel assembly from the aircraft?
ANSWER – The deflated tire flag. See page 2-141.

Bearings
Scope Since the types of bearings and procedures for care are to numerous to cover
in-depth, only the basics of bearing care and maintenance will be covered in
this lesson.
Inspection A good visual examination can usually detect surface flaws and service
related defects that could cause operational problems and/or bearing failure.
A normal bearing has a dull, matte, or satin finish on ball or roller paths.
Bearings that are properly mounted and adequately lubricated will show a
dull matte-like finish in the highly polished raceway.
Removal The greatest single source of unnecessary bearing damage is improper

removal practices. Too often, adequate removal tooling is scarce and only
makeshift tools are available. Even when bearings are carefully removed,
poor handling practices and inadequate protection of bearings during periods
of temporary storage can cause unnecessary loss of many bearings that could
be processed and reused. The best protection against removal damages is
listed below:
• Proper training in use of tools and handling procedures

• Using only approved tools--not makeshift tools
• Application of proper handling procedures during and after removal
• Proper storage of removed bearings
• Use of appropriate instructions for removal
Cleaning Bearings must be clean before they can be properly inspected. No standard
cleaning process or single process sequence will clean all bearings 100
percent of the time. Individual bearings vary in the type and amount of
contamination that must be removed. Also, cleaning results for a given
cleaning procedure will vary.
Maintain close control of the cleaning process and evaluate results

consistently. Make all attempts for the process to remove 100% of
contaminates and residue for proper inspection and/or re-installation.

Bearings, Continued
Guidelines for Guidelines for visual inspection of bearings are listed below:
Visual
Inspections • Use only approved gloves or handling tools during visual inspection.
Fingerprints can leave a corrosive residue on the bearing.
• Use only approved tools for determining if bearings are within limits.
• Inspection shall take place in an environment, when feasible, free of dirt

and other contaminates which may contain corrosive or abrasive
characters.
• Do not leave bearings that have been visually inspected in a clean

environment unprotected for more than 2 hours.
Lubrication Properly lubricated bearings will ensure reliability with improved life cycles.
and Without this, bearings will have catastrophic failures because of excessive
Preservation friction and heat.
Preservation is also important for the integrity of a bearing. Without proper

preservation, corrosion and unrepairable damage will occur resulting in lack
of parts available for maintenance functions and excessive costs for a
maintenance activity.
Note: Only use approved materials for the lubrication and preservation of
any bearing.
Installation Bearings are precision mechanisms that have been manufactured to

dimensional tolerances measured in tenths of thousandths or millionths of an
inch. It is very important that care be taken to protect bearings during the
installation process.
All of the same guidelines for removal apply to installation.

Bearings, Continued
Causes of It is estimated that 90 percent of all bearing failures are caused by one of the
Bearing Failure following conditions:
• Contamination entering the bearing either before or during assembly

• Faulty installation practices
• Inadequate or defective installation tools
Challenge Bearings that have been visually inspected in a clean environment shall not be
left unprotected for more than _______________.
ANSWER - 2 hours. See page 2-144.

Lesson 5 Exercise

Item 1 The purpose of the Tire and Wheel Maintenance Safety Program is to
Support Equipment (AWSE) ____________in all Navy and Marine Corps
aviation activities.
Item 2 In which of the following references would you find detailed information
involving wheel bearings?
a. NAVAIR 04-10-506, Aircraft Tires and Tubes

b. NAVAIR 01-1A-503, Maintenance of Aeronautical Antifriction Bearings
c. NAVAIR 04-10-1, Aircraft Wheels
d. NAVAIR 17-1-129, Support Equipment Tire and Wheel Assemblies
Item 3 Cpl Jones has just checked into your workcenter from another squadron. As a
Cpl, he should have all appropriate training and documentation. How do you
verify his training and what should be done if he has had all the appropriate
training and certification from a previous squadron?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________.

Item 4 When handling tires and wheel assemblies, what is the most important safety
aspect to take under consideration? Or how should these assemblies be
treated?
______________________________________________________________
______________________________________________________________
Item 5 Through Matching: For items 5 through 8, match the component in column 1 with its
Item 8 appropriate term in column 2.
Column 1 Column 2
Component Definition
____5. Aircraft tires a. Solid rubber

____6. SE tires b. Install deflated tire flag before
____7. Wheel assemblies removal
____8. Bearings c. Do not leave unprotected for more
than 2 hours
d. Assist the shock strut in reducing
the impact

Lesson 5 Exercise

1 tires and wheels 2-123
2 b 2-125
3 See solution below 2-127
5 d 2-130
6 a 2-140
7 b 2-141
8 c 2-144
Item 3 All of Cpl Jones training documentation and certifications should be in his
certification/qualification record (MATMEP). If it is not, why? That may
indicate a documentation problem from his previous command. Call his
previous command, verify training, and have copies of all training and
certifications sent to your command. If all of his training checks good, Cpl
Jones still has to pass your squadrons certifications prior to performing
maintenance or supervising. All other certifications must be filed in the
history portion of his MATMEP.
Item 4 Because of the explosive dangers of pressurized systems, the same respect
and treatment must be given to tire and wheel assemblies as live ordnance.
Lesson In this lesson you learned how to manage/monitor the Tire and Wheel
Summary Maintenance Safety Program within your workcenter. In the next lesson you
will learn about the Foreign Object Damage (FOD) Program.

LESSON 6
FOREIGN OBJECT DAMAGE PROGRAM
Introduction
Scope All units operating on aircraft, engines, support equipment (SE) or directly
supporting flight operations, shall designate a Foreign Object Damage (FOD)
Prevention Program Manager, and form a command FOD
Prevention/Investigation Team. The FOD Prevention Program Manager,
Safety Department, and QA Division shall be included members of the FOD
Prevention/Investigation Team. The team is responsible to the CO and must
carry out the FOD Prevention Program on a day-to-day basis.
A successful program requires
• Command support
• Personnel knowledge and experience
• Situational and personal awareness
• Seamless integration into the total maintenance effort
• Guidance needed as a workcenter supervisor to manage the FOD Program

within an aviation maintenance activity.
• Proper procedures for managing a FOD Program within your workcenter.
Learning Upon completion of this lesson you should be able to

Objectives
• Identify the purpose of the FOD Program.
• Identify the references used to manage the FOD Program.
• Identify the responsibilities of the workcenter supervisor in FOD Program.
• Identify the two categories of FOD Reports.

In This Lesson This lesson contains the following topics.
Topic See Page

Introduction 2-149
Purpose 2-151
References 2-152
NAMPSOP 2-153
Reporting Procedures 2-158
FOD Inspections 2-160

Purpose
Introduction The purpose of the Foreign Object Damage (FOD) Program is to establish
policies, responsibilities, and requirements to prevent damage to aircraft,
engines, SE and other aeronautical equipment, and to provide uniform FOD
reporting procedures.
Scope The FOD Prevention Program is an all hands effort and must be supported by
every individual assigned to the command. Ingestion of foreign objects by
gas turbine engines accounts for the largest percentage of premature engine
removals from naval aircraft.
Effect of FOD FOD affects the aviation community in many ways. Such as
• Creates personnel and material hazards

• Costs valuable maintenance man-hours
• Imposes additional unscheduled workloads on both using and supporting
activities
• Creates shortages
• Wastes dollars
• Reduces operational readiness
• May cause serious injuries to personnel
Definition FOD is defined as damage to aeronautical equipment, for example, aircraft,

engines, missiles, drones, and SE caused by an object(s) external to the
equipment. Gas turbine engine FOD is defined as damage that exceeds
serviceable limits caused by ingestion of objects not organic to the damaged
engine.
Causes of FOD Most FOD can be attributed to poor housekeeping, facility deterioration,
improper maintenance practices, or carelessness.
Challenge True or False. FOD presents a danger only to equipment and aircraft.
ANSWER - False. FOD also presents a hazard to personnel and may cause
serious injuries. See page 2-151.

References
List of Listed below are required references needed to manage a FOD Program
References within your workcenter:
• OPNAVINST 3750.6R, Naval Aviation Safety Program
• Local Command Procedures for Naval Aviation Maintenance Program

Standard Operating Procedures (NAMPSOP)

material.
OPNAVINST The OPNAVINST 3750.6R issues policies and provisions of the Naval
3750.6R Naval Aviation Safety Program. This instruction applies to all military and civilian
Aviation Safety personnel in every Navy and Marine Corps aviation activity throughout naval
Program aviation.
Purpose The Naval Aviation Safety Program enhances operational readiness by

preserving the lives and enhancing the well being of its members by
protecting the equipment and material they need to accomplish their mission.

NAMPSOP
Introduction NAMPSOPs are a critical part of aviation maintenance. They supply the
specific guidance needed pertaining to the equipment or program. These
programs are implemented using the instructions in OPNAVINST 4790.2H,
Chapter 10, Maintenance Programs and Processes, and specific program
related technical manuals. Many programs within the aviation community
require NAMPSOPs. See OPNAVINST 4790.2H, Chapter 10, Maintenance
Programs and Processes for a listing.
Development O-level activities shall develop local command procedures for the FOD
program as per OPNAVINST 4790.2H, Naval Aviation Maintenance
Program, Appendix E, in concert with the Safety Officer.

NAMPSOP, Continued
Sample Format APPENDIX E - Local Command Procedures
PROGRAM TITLE
From: Maintenance Officer
To: (As required)
Subj: LOCAL COMMAND PROCEDURES FOR NAVAL AVIATION

MAINTENANCE PROGRAM STANDARD OPERATING PROCEDURES
(NAMPSOP) (OPNAVINST 4790.2H, VOLUME V) CHAPTER__
1. Purpose and Scope

a. Local command procedures will be attached to the applicable NAMPSOP to
clarify geographic area, type/model/series specific, and command specific details not
addressed by the NAMPSOP. The Maintenance Officer will sign the last page of the
local command procedures. Once filled out, it shall become an integral part of the
appropriate NAMPSOP. It shall not be used to alter the intent of the related
NAMPSOP.
b. This supplement provides additional local requirements for the (activity,
department, division, etc.) (program title) Program.
2. Local Command Procedures
a. Enter information as determined locally.
b. Number of paragraphs or length of text is not limited and shall be at the
discretion of the local command.
c. Ensure all local command procedures are properly controlled.
d. Hazardous Material (HAZMAT) related to the programs will be procured,
handled, and disposed of as directed by applicable activity HAZMAT procedures.
Affected materials and procedures will be included in local command procedures.
Signature
(Name printed)
Challenge True or False. NAMPSOPs are not really that important.
ANSWER - False. NAMPSOPs are a critical part of aviation maintenance.

They supply the specific guidance needed pertaining to the equipment or
program. See page 2-153.

following information pertains specifically to the Foreign Object Damage
Program within the NAMP.

Responsibilities The minimum responsibilities for managing the FOD Program as per the
of the NAMP is to ensure
Workcenter
Supervisor • The FOD Program indoctrination and follow-on training is provided to
personnel.
• Training includes personnel responsibilities and shall be documented on

the NAMP Indoctrination Training sheet (See Study Unit 1, Lesson 1,
Maintenance Training Program) in the individual's
• All personnel assigned are informed of and comply with the FOD
Prevention Program and keep the work area and all SE free of foreign and
loose objects.
• All personnel perform thorough inspections of tool containers, ducts,

plenum chambers, crevices, engine cavities, and work areas.
• All personnel account for each tool, item of SE and part used in the repair
of equipment before installing, operating, or activating.
• All personnel perform pre-operational inspections of all assigned SE to

verify material integrity.
• All personnel install closures and/or duct covers when not actively
engaged in maintenance on or adjacent to gas turbine engines.
• All FOD containers are appropriately marked, covered, and readily

accessible within assigned spaces.
• Maximum participation in FOD walk downs.
• All FOD hazards are reported to Maintenance Control and the FOD
Prevention Program Manager.
• The discrepant fastener is marked and documented on a MAF in the case

of loose or missing fasteners on aircraft or an item of SE.
• All personnel entering/leaving the flight deck/flight line area thoroughly

check personal equipment for missing/loose parts.

Introduction Indoctrination training shall be provided to all personnel within an aviation

workcenter. Follow-on training shall also be provided as required.

• All workcenter, flight line, and shipboard FOD procedures
• All pre-maintenance and post-maintenance FOD procedures
• All reporting procedures
• All publications to be referenced
Reference References involving FOD are too numerous for your Marines to truly
Publications understand in depth. Therefore, as in all other indoctrination, it should be
tailored to familiarize your Marines in this program and not make them
experts.
Challenge True or False. Indoctrination training for FOD can be copied from any other
type indoctrination training.
ANSWER - False. Tailor indoctrination training to the specifics of the

maintenance that your personnel will be performing. See page 2-157.

Reporting Procedures
Categorization Engine FOD incidents are categorized as

of FOD Reports
• Reportable
• Non-reportable
Reportable A reportable FOD incident is defined as one which requires

Incident
• Aircraft engine/module removal
• Occurs on an engine test cell
• In the case of an engine requiring fan blade or turbine replacement,
without engine removal.
Non- A non-reportable FOD incident is defined as repair without removal of an

Reportable
Incident • Engine
• Fan blade
• Module
Proper Each engine FOD incident (including FOD due to natural causes, such as
Procedures birds or ice) shall be investigated, and the FOD Prevention Program Manager
shall submit an Engine FOD Incident Report within 5 working days of
discovery for each reportable FOD. In cases where two or more engines on a
multi-engine aircraft incur FOD during a single incident, reporting custodians
may include all reportable engines on a single Engine FOD Incident Report.
A copy of the Engine FOD Incident Report shall accompany all FOD related
engine retrogrades. The report will satisfy Class C mishap reporting, required
per OPNAVINST 3750.6, provided damage is limited to the engine. Mishaps
involving more than engine FOD require both a mishap report (OPNAVINST
3750.6) and an Engine FOD Incident Report. In addition, a supplemental
Engine FOD Incident Report, which provides additional significant
information, may be submitted by O-level, I-level, or rework activities (as
appropriate). The supplemental report shall reference the initial Engine FOD
Incident Report Date Time Group.

Reporting Procedures, Continued
Internal Engine Internal engine component failure and the damage resulting from the failure
Damages shall not be interpreted or reported as FOD. This does not constitute damage
due to FOD, even if it may seem the same to some. Minor roughness or
erosion of blades or vanes, within serviceable limits is due to the natural wear
of engines. If an engine ingests part of its internal components due to failure,
this is not damage due to an outside source. Remember, FOD stands for
Foreign Object Damage. Only damage due to the introduction of an outside
source (Foreign) shall be considered a reportable incident relating to FOD.
Reporting FOD The Engine Removal/Turn-in, VIDS/Maintenance Action Form (MAF), shall
on a reflect MAL Description Code 030 (mishap damage) when FOD is the direct
Maintenance result of an aircraft mishap. The related mishap report submitted per
Action Form OPNAVINST 3750.6 shall clearly state the events that justify use of MAL
Description Code 030 and discuss the FOD damage occurring in the course of
the mishap
Challenge True or False. Engine FOD incidents are categorized into three different
categories.
ANSWER - False. Engine FOD incidents are categorized into two different
categories. Reportable and Non-reportable. See page 2-158.

FOD Inspections
Introduction Before even beginning maintenance, either in the shop, on the flight deck or
flight line, a FOD inspection is a must. For your Marines to begin your
maintenance before doing so is setting themselves and you up for failure. It
could range from ensuring the work area is free of debris or a thorough
inspection of the whole area. The situation will dictate the appropriate level
of inspection.
Pre and Post These inspections will ensure no FOD hazards will be present before, during,
Maintenance or after the maintenance is performed. Inspections include, but are not
Inspections limited to
• All tool containers

• The maintenance location and surrounding area
• All support equipment used during maintenance
• All crevices, engine cavities, plenum chambers, duct, and any area on the
aircraft where FOD may be concealed
Note: Periodic inventories of tool containers while in process of

maintenance also aids in true accountability of all tools.
Tool Tool containers are of special concern when maintenance is performed. All
Containers tools must be accounted for before, during and after any maintenance task is
performed. As workcenter supervisor, you must be especially diligent with
this and ensure your Collateral Duty Inspector (CDI) and Quality Assurance
Representative (QAR) sign for tools accounted for actually did the inspection.
If not, an aircraft could be called back from a flight for missing tools. This
will not look good when you have to explain to the Aircraft Maintenance
Officer (AMO) why that aircraft was called back from a flight. For
workcenter supervisors that are at the I level, the same could be said for a
component sent to a squadron and installed on an aircraft that is on a test
flight. Never let other personnel pull one of your Marines off a task, assigned
by you, to work on another task without your approval first.

FOD Inspections, Continued
Maintenance The maintenance area is defined as the immediate and surrounding area where
Area any maintenance is to be performed. FOD inspections of the maintenance
area serve many purposes. Inspections of the area will not only show any
FOD, which could contaminate critical components, but also show any
discrepancies that may have gone unnoticed. This may include anything from
a simple missing fastener to a downing discrepancy. It will also give the
maintenance worker an overview of the maintenance area, which provides
him or her better handle on how to go about performing the maintenance.
Support All support equipment used during maintenance must have a pre and post
Equipment maintenance inspection performed. This not only ensures the SE is free from
FOD, but will show any discrepancies with the SE that may hinder the
maintenance task.
Hiding Places There are many places that FOD may imbed itself on an aircraft or SE only to
for FOD come out at the most inopportune time. Only a careful inspection of all
crevices and spots that FOD may hide will reveal it. Just a quick glance will
not suffice when the safety of flight and personnel are concerned. Special
attention must be paid to engines and flight control areas. Ensure any duct
covers or closures that do not need to be removed for maintenance are
installed.
Aircraft A thorough FOD inspection must be performed on aircraft which have had
Inspections
• Phased maintenance
• Extensive corrosion control inspection
• Engine repair
• Engine or major component change
• Extended downtime in excess of thirty days
Missing If during an inspection, any missing or lose fasteners are discovered, ensure a
Fasteners discrepancy is written up on that aircraft or SE. If the discrepant fastener is
lose enough to remove, ensure it is bagged, marked with the discrepancy
number, and placed into the appropriate bin.

FOD Inspections, Continued
FOD Walk FOD walk downs are a maximum participation effort. Whether aboard ship
Downs or on the flight line, all personnel available must attend the FOD walk down.
If you are a power line or flight line workcenter supervisor, this responsibility
will fall on you. Your shop will control the walk down and retain the FOD
walk down record book. A QA representative must be present during the
walk down. Any FOD not found during a walk down, which causes a
mishap, will require a not so happy meeting between you, the QA rep, and the
AMO. Take walk downs seriously and do not get yourself into this position.
FOD Walk This record book must be maintained to strictest policy and all walk down
Down Logbook entries in the logbook must
• Be accurate
• Be legible
• Include all FOD found during walk down
• Include a QA signature for each walk down
Things to Look Some of the things to look for during an inspection, but not limited too, are
for During listed below.
FOD
Inspections • Organic material such as sticks, grass, rocks, etc.
• Hardware from any mechanical equipment such as nuts, bolts, washers,
etc.
• Any object, no matter how small, which may present a flying hazard
during aircraft turn up.
FOD All FOD containers must be marked in large bold letters “FOD” or “FOD
Containers CONTAINER” and have proper lid or closure. If on the flight line, the lids
must be secured to the container and the whole container properly secured to
prevent a flying hazard.
Challenge True or False. All tool containers must be inspected.
ANSWER - True. All tools must be accounted for before, during and after
any maintenance is performed. See page 2-160.

Lesson 6 Exercise
Item 1 The purpose of the FOD Program is to establish policies, responsibilities, and
requirements to prevent damage to aircraft, engines, SE and other
aeronautical equipment, and to provide
a. documentation solutions.
b. uniform FOD reporting procedures.
c. personnel proper safety equipment.
d. ensure proper SE use.
Item 2 Which of the following references would provide you the local squadron
procedures involving FOD control?
a. OPNAVINST 4790.2H, Naval Aviation Maintenance Program

b. OPNAVINST 3750.6R, Naval Aviation Safety Program
c. Local Command Procedures for Naval Aviation Maintenance Program
d. NAVAIR 17-1-129, Support Equipment Tire and Wheel Assemblies
Item 3 Which of the following supplies the needed guidance pertaining to a piece of
equipment or program and are implemented using the instructions in
OPNAVINST 4790.2H, chapter 10 (Maintenance Programs and Processes)?
a. OPNAVINSTs
b. FOD manuals
c. NAMPSOPs
d. Schedule Officer Programs

Item 4 and Matching: For items 4 and 5 match the component in column 1 with its
Item 5 appropriate term in column 2.
Column 1 Column 2
Component Definition
____4. Reportable FOD incident a. Repair without the removal of a

____5. Non-reportable FOD fan blade
incident b. Occurs on an engine test cell

Item 6 At 1330, you inform one of your Marines that the maintenance task you
assigned him before lunch must be completed before the end of the day. You
ask to inspect his toolbox so you can sign and account for all tools before he
resumes his maintenance task. You notice upon inspection that one of the
sockets is missing. The Marine informs you that he left his toolbox locked in
the shop during his lunch break, and he was sure that all tools were there.
You ask if it was possible for him to have left the socket on the aircraft he
was working on, and who inspected his toolbox before he placed a stoppage
on the maintenance task before going to lunch. He states that he was pulled
off the maintenance task you assigned him in the morning by another Marine
to fix the fuel control on Aircraft 02. Aircraft 02 was on the flight line and
had to go on a flight, so repairs were a priority. He also states that he did not
get his toolbox inspected before he went to lunch. You then call Maintenance
Control asking for the location of Aircraft 02. Maintenance Control states
that Aircraft 02 is performing aerial refueling ops.
What must be done now? Where did the problem start? What corrective
actions must be taken to ensure this never happens again? Answer all three
questions in space provided below.
1. ________________________________________________________
________________________________________________________.
2. ________________________________________________________
________________________________________________________.
3. ________________________________________________________
________________________________________________________.
Item 7 Which one person must be present at the FOD walk down before it can take
place?
_____________________________________________________________.


1 b 2-151
2 c 2-152
3 c 2-153
4 b 2-158
5 a 2-158
6 See solution next page 2-160
7 A QA Representative 2-162

Item 6 Answers Question 1
First and foremost, Maintenance Control and QA must be informed and

Aircraft 02 immediately recalled for inspection. All personnel who were
involved in the incident must be called into QA for questioning. All aircraft
must be inspected or the socket found before any flight can go out.
Question 2
The problem started with the other Marine. He should have never taken one
of your Marines off of a job assigned to him to work on another maintenance
task without your approval. Never.
Question 3
You must inform all of your Marines that no one is to pull them off a
maintenance task that was assigned to them without your approval first and
they must get clearance from you in person. Also, all toolboxes are to be
inspected before and after any maintenance task. This must be stressed at all
costs and no deviations be tolerated. Do this before moving on to another
maintenance task to clear the aircraft safe for flight. If you go from task to
task, all day long, without an inspection performed after each task, and a tool
is missing, how can you say where the tool may be? If you worked on seven
different aircraft during the course of the day, the tool could be on any one of
them! It may take a few extra minutes between tasks, but it will take hours to
inspect the entire aircraft if it is not done and a tool is missing. Also, any
aircraft involved will be down for flight until inspected.
Lesson In this lesson you learned how to manage/monitor the Foreign Object
Summary Damage (FOD) Program within your workcenter. In the next lesson you will
learn about the Hazardous Material (HAZMAT) Control and Management
Program.


LESSON 7
HAZARDOUS MATERIAL CONTROL AND MANAGEMENT
PROGRAM
Introduction
Scope The Hazardous Material Control and Management (HMC&M) Program was
established in 1989 by the Chief of Naval Operations (CNO). This program
defines uniform policy, guidance and requirements for the life-cycle control
and management of Hazardous Material (HAZMAT) acquired and used by
the Navy and Marine Corps. This program also directs that control be
established to reduce the amount of hazardous material used and the amount
of Hazardous Waste (HW) generated. In this lesson, you will see many times,
the Marine Corps and Navy referenced together because of the operational
relationship the two have. We as Marines have to abide by many Navy
regulations while aboard Navy ships or stations.
No More As a result of the increased attention and focus on environmental issues,

Loopholes various executive orders regulations and DOD directives have required all
activities to comply with applicable federal, state, and local environmental
pollution control policies. The Navy and Marine Corps are also faced with
increasing restrictions when considering international environmental
protection. Sovereign immunity, with respect to environmental protection
issues, once enjoyed by the Services, is virtually nonexistent.
Applicability The HMC&M Program applies to all Navy, Marine Corps, and other
government activities performing maintenance or other functions in support
of naval aviation.
Cradle to To ensure safe use of HAZMAT the Navy and Marine Corps have adopted
Grave Concept the "cradle to grave" concept in which HAZMAT is closely managed
throughout its life cycle, from acquisition to use and eventual disposal.
HAZMAT management, control, and minimization serve to protect personnel
and preserve the environment.

• Guidance needed as a workcenter supervisor to manage the HMC&M

Program within an aviation maintenance activity.
• Proper procedures for managing a HMC&M Program within your work

center.
Learning Upon completion of this lesson you should be able to

Objectives
• Identify the purpose of the HMC&M Program.
• Identify the references used to manage the HMC&M Program.
• Identify the responsibilities of the workcenter supervisor in the HMC&M

Program.
• Identify the safety procedures for handling HAZMAT.
• Identify the benefits of the Consolidated Hazardous Material Reutilization

and Inventory Management Program (CHRIMP).
• Identify the purpose of the Hazardous Substance Management System

(HSMS).
• Identify the department that handles the storage, shipment, and disposal of
HAZWASTE.

Topic See Page

Introduction 2-169
Purpose 2-172
References 2-173
Safety 2-179
CHRIMP 2-182
Lockers and Storage 2-186
Personnel 2-188

Purpose
Introduction The purpose of the HMC&M Program is to establish policies, procedures,

responsibilities, and requirements for the safe use, handling, and disposal of
HAZMAT.
Scope As in the FOD Prevention Program, the HMC&M Program is an all hands
effort and must be supported by every individual assigned to the command.
HAZMAT constitutes a serious danger to not only the environment, but also
any personnel involved in its handling, use, or storage.
Mandatory Aircraft maintenance departments must place special emphasis on the

Compliance HMC&M Program. This Program must fully support all federal, state, and
local environmental laws and regulations concerning HAZMAT.
• Handling
• Storage
• Use
• Reuse
• Minimization
• Disposal
Failure to comply with these regulations could result in civil or criminal

liability to the command and/or yourself.

References
List of Listed below are required references needed to manage a HMC&M Program
References within your workcenter
• OPNAVINST 5090.1, Environmental and Natural Resources Program

Manual
• NAVSUP Publication 722, Consolidated Hazardous Material Reutilization

and Inventory Management Program (CHRIMP) Manual


Program Manual

material.
OPNAVINST This manual provides policy, identifies key statutory and regulatory
5090.1, requirements, and assigns responsibility for management of programs for
Environmental
and Natural • Cleanup of waste disposal sites
Resources
Program • Compliance with current laws and regulations for the protection of the
Manual environment, natural resources, cultural and historic resources
• Conservation of natural resources
• Pollution prevention
• Technology
Precedence This instruction is the primary guidance used for Navy and Marine Corps
policies and procedures in managing environmental and natural resource
programs. This manual will take precedence in case of conflict between it
and any other instructions, manuals, or similar directives on environmental
and natural resource programs.

NAVSUP The purpose of this manual is to provide the chain of command, afloat and
Publication ashore, with a document to assist in the development and implementation of
722, local HM management programs. The publication contains information based
Consolidated on experience and lessons learned by Hazardous Material Minimization
Hazardous Centers (HAZMINCENs) ashore and prototype ships, as well as information
Material
provided by Headquarters, Fleet, and Type Commander (TYCOM) staff.
Reutilization
and Inventory
Management This manual also contains the lessons learned from CHRIMP, HICS and
Program HSMS implementation teams.
Manual
Topics This manual is broken into three specific sections.
• Hazardous Material Management Afloat

• Hazardous Material Management Ashore
• Ship-to-Shore HAZMAT Interface
OPNAVINST The purpose of this manual is to provide a document that gives the guidance
5100.19, Navy and direction necessary to implement the NAVOSH Program. This guidance
Occupational and direction is specifically for
Safety and
Health
• Commanding Officers
Program
Manual for • Safety Officers
Forces Afloat • Managers
• Supervisors
• Workers for afloat commands
OPNAVINST The purpose of this manual is to affirm all aspects of the NAVOSH Program.
5100.23, Navy All levels of command shall implement and manage the NAVOSH Safety
Occupational Program in compliance with the policies, procedures, actions, and guidance
Safety and set forth by this instruction. This manual is a wealth of knowledge for all
Health workcenter supervisors when any question concerning safety of his/her
Program
personnel arises. This manual should also be referenced frequently for
Manual
changes that may have occurred involving the safety of personnel.

Challenge True or False. The purpose of the HMC&M Program is to establish policies,
procedures, responsibilities, and requirements for the safe use, handling, and
disposal of HAZMAT.

following information pertains to the HMC&M Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the HMC&M
of the Program as per the NAMP.
Workcenter
Supervisor • Ensure HMC&M Program and follow-on training is provided to
personnel.
• Ensure all personnel receive command HMC&M and hazardous

communication training per OPNAVINST 5100.19 and OPNAVINST
5100.23 within 30 days of assignment.
• Review workcenter Authorized Use List (AUL) and route change

recommendations through the HMC&M Supervisor per OPNAVINST
5090.1.
• Ensure a Material Safety Data Sheet (MSDS) for each HAZMAT used is
available at a centralized location within the activity, and personnel
directly involved in the handling and use of the material has received job
specific training per OPNAVINST 5100.19 and OPNAVINST 5100.23.
• Use an effective shelf life process for all workcenter HAZMAT.
• Provide the HMC&M supervisor with updated lists of HAZMAT in the

workcenter. Forward all material substitutions and process changes.
• Ensure workers to only use HAZMAT acquired from the HAZMINCEN

(nothing borrowed from another source).
• Recommend qualified personnel for designation as HMC&M Marines.
• Use the CHRIMP computer-generated reports at sites where a CHRIMP

has been established by the host ship or station.

Challenge True or False. Maintenance Control should be provided with updated lists of
HAZMAT in the workcenter.
ANSWER – False. Provide the HMC&M supervisor with updated lists of

HAZMAT in the workcenter. See page 2-176.

Introduction Indoctrination training shall be provided to all personnel. Follow-on training

shall also be provided as required.
Training for All inbound personnel must receive HMC&M and HAZCOM training as per
Inbound OPNAVINST 5100.19 and OPNAVINST 5100.23 within 30 days of
Personnel reporting to the command.

• All Material Safety Data Sheets (MSDS)
• Dangers associated with HAZMAT
• Disposal of waste products (HAZWASTE)
• HAZMAT/HAZWASTE locker procedures
• Spill procedures
Reference References involving the HMC&M Program are too numerous for your
Publications Marines to truly understand in depth. Therefore, as in all other indoctrination,
them experts.
Challenge True or False. Indoctrination training needs to be given within 60 days.
ANSWER – False. All inbound personnel must receive HMC&M and

HAZCOM training as per OPNAVINST 5100.19 and OPNAVINST 5100.23
within 30 days of reporting to the command. See page 2-178.

Safety
Introduction Many times we are bombarded by information on how HAZMAT is a serious

danger to the environment. We must not forget that the personnel who use,
handle, or store these materials are also in danger. Some of the affects may
be acute, or noticed immediately. Others may be chronic, or develop over a
period of time. Sometimes it may take years for the affects of a single
exposure to become apparent. As stated before in this course, never take the
safety of your personnel lightly.
HAZMAT, the The term HAZMAT is all too frequently used when referring to the oils and
Misunderstood chemicals used in maintenance and nothing else. Just as dangerous, when
Word used improperly, are the simple cleaning materials we use from day to day.
Have one of your workers combine two different cleaning agents to mop the
floor. One contains chlorine bleach, and the other contains ammonia. This
creates a deadly gas and can lead to results ranging from, the whole building
being evacuated to personnel being killed. Just because it does not seem to be
dangerous, or we use it every day, do not let yourself or your workers be
lulled into a sense of security. Take all chemicals seriously and treat them
with the respect due.
Personal PPE is a must for all personnel involved at any level of HAZMAT or
Protective HAZWASTE. Never allow your Marines to handle any HAZMAT or
Equipment HAZWASTE without the use of the appropriate PPE. Some of the needed
PPE are
• Chemical Proof Splash Suits

• Chemical Proof Gloves
• Chemical Proof Boots
• Aprons
• Face Shield
• Chemical Protective Goggles
• Respirators and Cartridges
Note: All PPE used with HAZMAT or HAZWASTE must be chemical

proof or resistant.

Safety, Continued
HAZMAT Any spill that occurs must be cleaned up immediately to protect not only the
Spills environment, but also all personnel. The HMC&M will have spill kits
positioned at specific locations for immediate use. Any spill must be
immediately evaluated for danger and reported to the HMC&M Manager if it
is of a serious nature. Your personnel must be briefed on the location and
inventory of equipment within the spill kit. The emergency response team
must be notified and react if the spill
• Constitutes a serious danger to the environment or personnel

• Is a large spill
• Cannot be contained by normal means
Material Safety Material Safety Data Sheets (MSDS) are technical bulletins containing
Data Sheets information about materials, such as composition, chemical, and physical
characteristics, health and safety hazards, and precautions for safe handling,
use, and disposal. MSDSs shall be maintained for every item of HAZMAT
either through the HMIS or by hard copy for open purchased items. They
shall be readily accessible and placed in a centralized location for personnel
who actually use or handle HAZMAT. As workcenter supervisor, you are
required to provide instructions in MSDS understanding and use. All
personnel using HAZMAT shall be trained on the dangers and precautions
contained within the MSDS before they actually use those materials. This
includes any cleaning supplies within your workcenter. Any material issued
with an MSDS must have the MSDS posted in the binder or folder.
Hazardous The HMIS provides MSDSs containing health, safety, and environmental
Material information about specific products. MSDSs, along with adequate training in
Information proper use of products, assist users in managing HAZMAT to minimize risks
System involved in performing various maintenance actions. HMIS also provides
labeling and packaging requirements, shipping and storage handling safety
precautions, and other information.
Production and The HMIS is produced on CD-ROM and distributed quarterly by the Naval
Distribution of Computer and Telecommunications Area Master Station Atlantic, Norfolk,
the HMIS VA.

Safety, Continued
Challenge True or False. Any gloves used in the handling of HAZMAT must be leather.
Answer. False. Any gloves used in the handling of HAZMAT must be

chemical resistant. See page 2-179.

CHRIMP
Introduction The Consolidated Hazardous Material Reutilization and Inventory

Management Program (CHRIMP) has proven to be a successful method to
achieve life-cycle control and management of HAZMAT and HAZWASTE.
Through the application of sound material management practices, this
program has significantly reduced the amount of HAZMAT procured,
stocked, distributed to workcenters, and disposed of as waste.
Beforehand Before the CHRIMP was in place, users submitted requisitions to the Supply
Department for HAZMAT to complete a task or to have on hand. Unused
HAZMAT was kept at the work site sometimes without regard for proper
storage or environmental impact. Often, the shelf life may have expired or
the container may have become damaged, and the material would be turned in
for disposal. In many cases, this scenario would occur simultaneously in
workcenters throughout the command. This ultimately resulted in costly
disposal of shelf life expired, damaged, or excess material.
Benefits The benefits of a successful CHRIMP include
• Increased personnel safety

• Environmental protection
• Potential cost savings without degradation of operational readiness
Objective and The primary objective of CHRIMP is to provide life cycle management of
Procedures HAZMAT and to reduce HAZWASTE. A proven method to accomplish this
is through the establishment of a Hazardous Waste Minimization Center
(HAZMINCEN) where all HAZMAT is centrally controlled and managed.
All workcenters within the command and tenant activities that participate in
the program, are required to turn in HAZMAT currently held and to use the
HAZMINCEN for future HAZMAT needs. The HAZMINCEN fills
customer requisitions by issuing the quantity of HAZMAT required to
perform the job. When the work is complete, the customer will return any
unused portion of HAZMAT or the empty container to the HAZMINCEN.
HAZMINCEN personnel will examine the returned HAZMAT and determine
if it can be used by another customer, recycled, or if it should be processed
for disposal as HAZWASTE.

CHRIMP, Continued
Reports CHRIMP reports shall be generated for all materials used. The HAZMAT
Manager will have all pertinent information in regards to proper format and
regulations.
Authorized Use The Authorized Use List (AUL) must be reviewed for actual use of materials
List in your workcenter. If a new material is needed for maintenance task or an
old material is no longer used, route the appropriate changes through the
HMC&M Manager. These changes must reflect actual needs of the
workcenter. Do not attempt to add to or subtract from the list based on what
material works good. Only materials defined by the maintenance manual
shall be used. The material must constitute an actual need or is no longer
needed as per the maintenance manual. Also, an updated list of HAZMAT in
the workcenter must be provided to the HMC&M Manager.
Hazardous Hazardous Substance Management System (HSMS) is an automated chemical

Substance tracking system capable of tracking and managing Hazardous Waste and
Management Hazardous Material. HSMS provides “cradle-to-grave” tracking of
System HAZMAT plus the chemical make up of those materials. HSMS enables the
user to meet the chemical tracking and reporting requirements.
Flow Charts The following pages show the HAZMINCEN flowchart. This flowchart
shows the actual flow of materials to and from HAZMINCEN.

CHRIMP, Continued
HAZMINCEN
Flow Chart

CHRIMP, Continued
HAZMINCEN
Flow Chart,
continued
Challenge True or False. The primary objective of the CHRIMP is to centrally locate
HAZMAT in workcenters.
ANSWER – False. The primary objective of CHRIMP is to provide life cycle

management of HAZMAT and to reduce HAZWASTE. See page 2-182.

Lockers and Storage
Managing One goal of CHRIMP is to reduce HAZWASTE disposal. It is inevitable

HAZWASTE that, at some point in time, a portion of HAZMAT will become HAZWASTE.
Situations leading to disposal of HAZMAT as HAZWASTE include
• Partially filled containers remaining at the end of a maintenance task

• Expired shelf life
• Generation of shop wastes containing HAZMAT
The accumulation and storage of HAZWASTE is subject to the provisions of

the Resource Conservation and Recovery Act (RCRA) and must be managed
by knowledgeable and properly trained personnel. Provisions of Subtitle C of
RCRA include
• Time frames for storage of HAZMAT

• Registration requirements as a HAZMAT generator
• Requirements to follow state law (which may be more restrictive than
Federal statutes)
Because of complex laws and difficulty in interpreting these laws, it is

recommended that plans for storage, shipment, and disposal of HAZWASTE
be coordinated with the host activity Environmental Department.
HAZWASTE The HAZMAT Manager is responsible for the HAZWASTE locker.

Locker Regulations provided by the manger must be taken seriously. Failure to
follow regulations may result in fines and/or jail sentences if discovered. If
any questions involving HAZMAT or HAZWASTE arise, always refer to the
site manager to be safe.
Local Storage HAZMAT lockers within your workcenter are subject to all local, state, and
Lockers federal regulations. Local procedures may allow workcenters to maintain a
weeks supply of HM in authorized storage lockers. The HAZMAT Manager
is also responsible for these sites and will provide all regulations pertaining to
these sites. You must ensure all your personnel strictly adhere to all the
policies and procedures regarding these storage lockers.

Lockers and Storage, Continued
Material At the completion of the maintenance task, or end of the workweek, the
Control HAZMAT Manager will arrange for the return of any unused portion of
material and its container to the HAZMINCEN if a local locker is not
available. If the returned material can be used again, it will be repackaged as
necessary and returned to storage. If the material or container cannot be used
again, it will be processed for disposal as HAZWASTE through appropriate
channels. If a maintenance task cannot be completed during the day the
material is issued, and authorized storage facilities exist at the workcenter, the
HAZMAT can be retained on site until the work is completed.
Shelf Life Dates Materials must be checked for effective shelf life dates, and proper
and Proper nomenclature, and must always be issued from HAZMINCEN. Never use
Material any materials that have not been issued through HAZMINCEN. Any
substitutions of HAZMAT issued by HAZMINCEN shall be checked for
compatibility with the maintenance task to be performed. Just because the
material is issued by HAZMINCEN, never assume the material is good. If a
material is discovered to be defective or incompatible for the task, and has
already been used, this may result in extra maintenance hours for your shop.
Example One of your Marines has just serviced a gearbox with old, contaminated, or
improper oil. Now, depending on the manual, that gearbox may have to be
pulled and replaced with a new gearbox. What if this was just a simple
service on that gearbox so the aircraft could go on a flight? Now that aircraft
is down and cannot be flown without the minimum of a gearbox drain and/or
flush.
Challenge 6 True or False. The HMC&M Manager is responsible for the HAZMAT
locker.
ANSWER – False. See page 2-186.

Personnel
Recommended As workcenter supervisor, you shall designate individuals within your work
center as HMC&M representatives. Only personnel who demonstrate
satisfactory knowledge, maturity, and ethical standards shall be appointed.
Personnel selected shall be designated in writing and confirmed with the
HMC&M Manager.
Training Selected personnel shall have all appropriate training sufficient to perform the
task as a HMC&M representative. This shall be coordinated through the
HMC&M Manager.
Documentation As in all other training, HAZMAT training shall be documented and recorded
in the individuals qualification/certification record. In addition, the HMC&M
Manager shall be provided with verification of training completed for his/her
records.

Lesson 7 Exercise
Item 1 The purpose of the HMC&M Program is to establish policies, procedures,

responsibilities, and requirements for the safe use, handling, and _______ of
HAZMAT.
a. venting
b. trashing
c. spraying
d. disposal
Item 2 Which of the following references is best to find HAZMAT regulations

aboard ship.
a. OPNAVINST 5090.1, Environmental and Natural Resources Program

Manual
b. OPNAVINST 3750, Naval Aviation Safety Program
c. OPNAVINST 5100.19, Navy Occupational Safety and Health
(NAVOSH) Program Manual for Forces Afloat
d. OPNAVINST 5100.23, Navy Occupational Safety and Health
(NAVOSH) Program Manual
Item 3 Which of the following is proper PPE for use with HAZMAT/HAZWASTE.
a. Leather gloves
b. Gas mask
c. Apron
d. Cranial

Item 4 Through Matching: For items 4 through 6, match the acronym in column 1 with its
Item 6 safety precautions in column 2.
Column 1 Column 2
Acronym Safety Precaution
____4. PPE a. Provides labeling and packaging

____5. MSDS requirements, shipping and
____6. HMIS storage handling safety
precautions, and other
information
b. Must be chemical proof or
resistant
c. Must be maintained for every
item of HAZMAT
Item 7 The benefits of a successful CHRIMP include increased personnel safety,

________, and potential cost savings without degradation of operational
readiness.
a. environmental protection
b. upgraded computer equipment
c. increased working hours
d. remodeled working spaces
Item 8 The ______is an automated chemical tracking system cable of tracking and
managing hazardous waste and hazardous material.
a. HMIS
b. HSMS
c. HMMTS
d. HMITS

Item 9 Which department handles the storage, shipment, and disposal of

HAZWASTE?
a. HAZMAT Department
b. Environmental Department
c. Personnel Department
d. PPE Department


1 d 2-172
2 c 2-174
3 c 2-179
4 b 2-179
5 c 2-180
6 a 2-180
7 a 2-182
8 b 2-183
9 b 2-186

Lesson In this lesson you learned how to manage/monitor the Hazardous Material
Summary Control and Management (HMC&M) Program within your workcenter. In
the next lesson you will learn about the Electrostatic Discharge (ESD)
Program.


LESSON 8
ELECTROSTATIC DISCHARGE PROGRAM
Introduction
Definition Electrostatic Discharge (ESD) is the transfer of electrostatic charge between

bodies at different electrostatic potentials caused by direct contact or induced
by an electrostatic field. It is potentially damaging to electrical and electronic
equipment.
Scope Knowing the effects of ESD on solid-state electronic components and

equipment is a necessary part of aviation maintenance. Improper handling,
transportation, and storage techniques can cause electrostatic sensitive devices
and components to fail. The insidious nature of ESD induced failures
requires ESD control protection measures to be integral parts of aviation
maintenance and supply disciplines. All solid-state electronic components
and assemblies containing such components are considered Electrostatic
Discharge Sensitive (ESDS) items unless otherwise directed by higher
authority.
Content This lesson will provide you with the guidance needed as a workcenter
supervisor to monitor the Electrostatic Discharge (ESD) program within an
aviation maintenance activity and the proper procedures for managing an
ESD program within your workcenter.

Objectives
• Identify the purpose of the ESD program.
• Identify the references used to monitor the ESD program.
• Identify the responsibilities of the workcenter supervisor in the ESD

program.
• Identify the proper requirements for maintaining an ESD protective work

area.

Topic See Page

Introduction 2-195
Purpose of the Electrostatic Discharge Program 2-197
References 2-198
ESD Protected Work Areas 2-205
Protective Packaging 2-209

Purpose of the Electrostatic Discharge Program
Introduction The purpose of the ESD Program is to establish policies, responsibilities, and
requirements for handling, transportation, storage, and maintenance of
Electrostatic Discharge Sensitive (ESDS) devices/components.
Applicability The ESD Program applies to any activity that designs, tests, inspects,
services, manufactures, processes, assembles, installs, packages, labels, or
otherwise handles electrical or electronic parts, assemblies, and equipment
susceptible to damage by static electricity.
Sources The relative motion, physical separation of materials or flow of solids,

liquids, or gases generates electrostatic charges. Common sources of ESD
include personnel, items made of common plastics, and processing
equipment. ESD can damage parts by direct contact with a charged source or
by charges induced from electrostatic fields.
Examples Examples of ESDS parts are
• Micro-circuits
• Discrete semiconductors
• Thick and thin film resistors
• Hybrid devices
• Piezoelectric crystals

References
References Listed below are required references needed to manage/monitor an ESD

program within your workcenter:
• MIL-HDBK-263B, Electrostatic Discharge Control Handbook for

Protection of Electrical and Electronic Parts, Assemblies and Equipment
(Excluding Initiated Explosive Devices) (Metric)
• MIL-STD-1686C, Electrostatic Discharge Control Program for Protection

of Electrical and Electronic Parts, Assemblies, and Equipment
• NAVAIR 01-1A-23, Standard Maintenance Practices Miniature/

Microminiature (2M) Electronic Assembly Repair
• NAVSUP Publication 484, Supply Afloat Fleet and Field Packaging

Procedures
• MIL-HDBK-773, Electrostatic Discharge Protective Packaging

material.
MIL-HDBK- This handbook provides guidance for developing, implementing, and

263B, monitoring an ESD control program in accordance with the requirements of
Electrostatic MIL-STD-1686. Information provided in this manual cross-references the
Discharge various revisions of MIL-HDBK-263 to the appropriate revision of MIL-
Control STD-1686. The specific guidance provided is supplemented by the technical
Handbook
data contained in its appendices. Table I in this manual provides a cross-
reference listing of MIL-STD-1686 requirements, MIL-HDBK-263 guidance,
and MIL-HDBK-263 supplementary technical data. This handbook is not
applicable to electrically initiated explosive devices.

MIL-STD- This manual defines the performance requirements for an ESD control
1686C, program for electrical and electronic parts, assemblies, and equipment,
Electrostatic susceptible to damage from ESD. Electrically initiated explosive devices and
Discharge part level design are excluded from these requirements. This manual also
Control covers
Program
• Identification
• Testing
• Classification
• Assembly and equipment design criteria
• Protected areas
• Handling procedures
• Training
• Marking of hardware
• Protective covering and packaging
• Quality assurance audits and review requirements

NAVAIR 01- This manual contains instructions to perform organizational, intermediate,

1A-23, and depot-level maintenance on electronic assemblies and is to be used
Electrostatic whenever repair procedures are not specified in the equipment technical
Discharge manuals. It is not to be used in place of those technical manuals. In cases
Control where a repair procedure is not specified in either the equipment technical
Program for
manual or this manual, a procedure may be used that is considered best
Protection of
Electrical and practice, after consultation with local quality assurance. These procedures are
Electronic not to be used to perform unapproved modifications to electronic circuit card
Parts, assemblies.
Assemblies and
Equipment This manual also provides guidelines for the ESD control program in
accordance with ANSI/ESD S20.20 for any activity that
• Tests
• Manufactures
• Repairs
• Assembles
• Installs
• Packages
• Labels
• Stores
• Handles items that contain electrical or electronic components or devices
that are susceptible to damage caused by the discharge of static electricity
NAVSUP This publication provides instructions for packaging procedures for ships or
Publication stations that have limited packaging materials, technical references, and
484, Supply trained packaging personnel. These procedures will provide the minimum
Afloat Fleet protection needed for handling, stowage and shipment, and use of materials in
and Field the ships’ Allowance Equipage List (AEL) and commonly found reusable
Packaging
packaging materials.
Procedures
The packaging procedures specified in this publication apply to all ships’
material except where specific packaging instructions are issued by the
cognizant Inventory Control Point (ICP), Project Office, or Naval Systems
Command.

MIL-HDBK- This handbook provides detailed guidance for DoD personnel who use,
773, handle, package, and/or store ESDS items.
Electrostatic
Discharge It is designed to promote the use of standardized packaging materials as well
Protective as promote an understanding of the ESD threat through all levels of
Packaging
maintenance and supply.
Challenge True or False. The OPNAVINST 4790.2H defines the performance

requirements for an ESD control program for electrical and electronic parts,
assemblies, and equipment, susceptible to damage from ESD.
ANSWER. False. See page 2-199.

Responsibilities As workcenter supervisor, you are responsible for managing the ESD
program as per the Naval Aviation Maintenance Program (NAMP). You
must
• Ensure ESD Program and follow-on training is provided to personnel.

documented on the NAMP Indoctrination Training sheet (See Study Unit
• Ensure compliance with the ESD Program within the workcenter.
• Ensure all ESDS items remain in their protective packaging until installed
or ready for test, repair, inspection, or assembly at an ESD protected work
area.
• Ensure all test equipment, aircraft, SE, and personnel are grounded to an
authorized ground prior to handling or working with unprotected ESDS
items.
• Ensure all applicable items and personnel must be connected to an

authorized ground through a 250K to 2M ohm resistor when ESDS items
are opened for repair or inspection.
• Ensure all ESDS items are stored in protective packaging when awaiting
maintenance (AWM), awaiting parts (AWP), or in long-term local storage.
• Ensure, after opening a package containing an ESDS item to verify its

contents, the ESDS item is properly repackaged and labeled.
• Post up-to-date Automated Management Information and Tracking System

listings in a readily accessible place.
• Recommend qualified personnel for designation as workcenter ESD

Marines.

Challenge True or False. As a workcenter supervisor, you must ensure all personnel and
equipment is properly grounded before any maintenance or inspections can be
performed on any ESDS item.
ANSWER. True. See page 2-202.

ESD Program and/or equipment. Follow-on training shall be provided as
required.

• ESD protected work areas
• Identification
• Testing
• Classification
Reference References involving the ESD program are too numerous for your Marines to
Publications truly understand in depth. Therefore, as in all other indoctrination, it should
be tailored to familiarize your Marines in this program and not make them
experts.
Selection of Personnel shall be recommended for designation as ESD Marines. Only

ESD Personnel qualified personnel shall be recommended and be allowed to perform
maintenance involving ESDS items.
Challenge True or False. Marking of ESDS items is not considered a training task when
conducting indoctrination and follow-on training.

ESD Protected Work Areas
Definition ESD protected work areas are identified, constructed, and equipped with
materials for trained personnel to handle ESDS items.
Scope Personnel safety cannot be overstressed in this program. In the past,

technicians have been isolated from electrical shock by nonconductive rubber
mats. In ESD protected work areas, these non-conductive mats have been
replaced with conductive material/devices through which the technician is
tied to a "soft ground" (a connection to ground through an impedance
sufficiently high to limit current flow to safe levels for personnel (normally 5
mill amperes)). Impedance needed for soft ground is dependent upon the
voltage levels that could be contacted by personnel near the ground. The
practice of removing Shop Replacement Assembly (SRA)/Weapons
Replacement Assembly (WRA) with power applied is strictly prohibited.
Note: The integrity of ESD protected work areas/workstations must remain

intact at all times. Never try to bypass any grounds or shortcut work
practices in case of faulty/missing safety devices.
Workcenter Automated Management Information and Tracking System listings shall be

Postings posted in a readily accessible place for all personnel to see.

ESD Protected Work Areas, Continued
I-Level
The following requirements are for I-Level Maintenance Activities.
Requirements
• Handle unprotected ESDS items only at ESD protected work areas that
comply with requirements identified in MIL-HDBK-263B, NAVAIR 01-
1A-23, and NAVAIR 17-600-193-6-2.
• Identify all ESD protected work areas with signs or posters per NAVAIR
01-1A-23.
• ESD protected work areas will contain, at a minimum, a conductive or

dissipative work surface, either hard laminate or soft mat, and appropriate
quantities of personnel wrist straps, elastic type. Both wrist strap and
work surface shall be individually grounded through a 250K to 2M ohm
resistor.
• Use conductive floor matting only where carpeting is installed or

personnel wrist straps do not provide adequate protection. If wrist straps
cannot be used, personnel must wear heel grounders.
• Safety floor matting may be used to provide electrical safety when an area
is used for both troubleshooting energized equipment and handling ESDS
items. All ESD control and prevention procedures must be followed when
handling ESDS items on or around the test bench, for example, properly
installed ESD mat and wrist straps.
• No prime generators, as defined in NAVAIR 01-1A-23, shall be closer

than 24 inches to an ESD protected work area.
• Perform periodic maintenance and preoperational checks for permanent

ESD protected work areas per NAVAIR 17-600-141-6-1, NAVAIR 17-
600-141-6-2, and NAVAIR 17-600-193-6-2.
• Supply personnel shall have an ESD protected work area or portable ESD
station and be trained in its use.

O-Level The following requirements are for O-Level Maintenance Activities.

Requirements
• Handle unprotected ESDS items only at ESD protected work areas that
comply with requirements identified in MIL-HDBK-263B, NAVAIR 01-
1A-23, NAVAIR 17-600-141-6-1, and NAVAIR 17-600-141-6-2.
• Activities, which at any time remove or replace SRAs or components

within WRAs shall have ESD protected work areas, or as a minimum, a
portable ESD station in applicable workcenters.
• Use portable ESD field service kits when removing or replacing individual
SRAs or components onboard aircraft during in-flight or ground
maintenance. Groundwork mats and wrist straps against the aircraft
frame.
• Material control shall have an ESD station available, portable or

permanent, and personnel trained to handle unprotected ESDS items.
• Detachments deployed aboard air capable ships shall have, as a minimum,

an ESD field service kit if maintenance requires removing or replacing
SRAs or components within WRAs.
• Perform periodic maintenance and preoperational checks for permanent

ESD protected work areas per NAVAIR 17-600-141-6-1, NAVAIR 17-
600-141-6-2, and NAVAIR 17-600-193-6-2. Portable field service kits,
which are stowed when not in use, need only have preoperational
inspections performed per NAVAIR 17-600-141-6-1.
• Identify all ESD protected work areas with signs or posters per NAVAIR
01-1A-23.

Workstation The following illustration shows the ESD protective workstation.
Challenge True or False. Any floor matting may be used as long as it is slip resistant for
an ESD protective workstation.

Protective Packing
Introduction Due to the increased sensitivity of ESDS items, packing of such items has
become more stringent throughout the years. Many of the new items used
throughout the military are susceptible to ESD at levels that can neither be
seen nor felt. Often it takes only a small level of charge to cause severe
damage.
Definition ESD protective packing is material capable of limiting the accumulation of

electrostatic charges by safely dissipating electrostatic charges, or by
shielding parts from the effects of external electrostatic charges.
Accumulated A discharge resulting from the accumulation of electrostatic charges may not
Damage necessarily destroy a device or cause a circuit to become non-functional. The
device can be permanently damaged yet perform its intended function.
Additional exposure to these discharges or using the device can further
damage it until failure occurs. This is known as a latent failure and can
seriously affect systems reliability.
Layers of In all cases, the first layer of material which comes in contact with the ESDS
Protection item, shall be static dissipative and non-conductive. Depending on
availability of material and situation, such a layer may be of a single layered,
multi-layered, or cushioning configuration. A shielding layer or layers shall
then be applied constructed of a conductive material to dissipate any charges
that may come in contact with the ESDS item. The item is then wrapped in a
anti-static barrier material and placed in a bag constructed to specifications
and made of proper anti-static materials. This then becomes the unit pack that
can be handled as you would any non-ESDS item.
Examples of Anti-static (static dissipative) pink poly bubble wrap, bags, and caps are not
Non-Protective static shielding materials; they provide physical protection only.
Packaging
Caution Labels ESD caution labels must be affixed to the outside of the static shielding
materials. Other non-static producing seals shall not be used unless ESD
caution labels are not available.

Protective Packing, Continued
Transportation Keep ESD protective materials in place while carrying uninstalled ESDS
of ESDS Items items from one location to another, including hangar decks, flight lines, flight
decks, workcenters, and Aeronautical Material Screening Unit (AMSU). If
the unit pack must be opened for any purpose, it shall be opened at an ESD-
controlled workstation.
FOD Hazards Some ESD protective materials, for example, conductive caps and anti-static
shielding bags, constitute a Foreign Object Damage (FOD) hazard and shall
be positively controlled on flight lines and flight decks.
COMNAVAIRSYSCOM has determined ESD grid tape is not a FOD hazard
and is the preferred material to be used for ESDS item protection in those
areas.
Construction of Construct or modify all maintenance and repair kits containing ESDS items to
Maintenance physically surround ESDS items with a barrier of conductive material. Kits
Repair Kits include
• In-flight troubleshooting kits

• Squadron pack up kits
• Maintenance assist kits used by I-level technicians
Protecting individual kit items provides a minimum acceptable level of ESD

protection.

Protective Packing, Continued
Common ESD
Protective
Materials
Challenge True or False. ESD protective packing accumulates static energy to protect
the ESDS item.

Lesson 8 Exercise
Item 1 The purpose of the ESD Program is to establish policies, responsibilities, and
requirements for the handling, transportation, storage, and maintenance of
Electrostatic Discharge Sensitive (ESDS)
a. aircraft.
b. support equipment.
c. workshops.
d. devices/components.
Item 2 Which reference contains the responsibilities of a maintenance activity

involving the ESD Program?
a. OPNAVINST 4790.2H
b. MIL-STD-1686C
c. MIL-HDBK-773
d. MIL-HDBK-263B
Item 3 As workcenter supervisor, you are responsible for ensuring all ESDS items
are stored in the proper protective packing while awaiting maintenance,
awaiting parts, or
a. installing ESDS item.

b. in long-term storage.
c. properly grounded.
d. inspecting ESDS item.

Item 4 One of your Marines has just informed you that the wrist strap on the ESD
protective workstation is broken and there is no replacement. Maintenance is
behind and he asks if he can just use a metal cable to bypass the wrist strap.
Would this be acceptable? Why or why not?
______________________________________________________________
______________________________________________________________
Item 5 When packing ESDS items, the first layer of material that comes in contact
with the ESDS item shall be static dissipative and
a. conductive.
b. non-conductive.
c. corrosive.
d. metallic.
Item 6 Some ESD protective materials, for example, conductive caps and anti-static
shielding bags, constitute _____________ and shall be positively controlled
on flight lines and flight decks.
a. adequate protection
b. HAZMAT storage
c. FOD hazards
d. tool room storage


1 d 2-197
2 d 2-198
3 b 2-202
5 b 2-209
6 c 2-210
Item 4 Answer No. Wrist straps for use on ESD-controlled workstations contain a protective
resistor. Bypassing this could lead to damage of the ESDS item.
Summary In this lesson, you learned how to manage/monitor the Electrostatic Discharge
(ESD) Program within your workcenter. In the next lesson, you will learn
about the Miniature/Microminiature (MMP) Program.

LESSON 9
MINIATURE/MICROMINIATURE PROGRAM
Introduction
Scope The complexity of electronic assemblies and the sensitivity of their

components to physical and electrical overstress requires repairs be performed
by formally trained and certified 2M (Miniature/Microminiature) repair
technicians at designated 2M activities. Only activities designated as 2M
capable by the cognizant ACC/TYCOM (Aircraft Controlling
Custodian/Type Commander) are authorized to perform 2M repairs.
Lesson Miniature/Microminiature is an extremely complicated and diverse

Applicability maintenance task and cannot be covered indepth within this lesson. This
lesson will cover some basic topics and the responsibilities of the workcenter
supervisor as per OPNAVINST 4790.2H.
• Guidance needed as a workcenter supervisor to monitor the

Miniature/Microminiature Program (MMP) within an aviation
• Proper procedures for managing an MMP within your workcenter.

Objectives
• Identify the purpose of the MMP.
• Identify the references used to monitor the MMP.

• Identify the responsibilities of the workcenter supervisor in the MMP.
• Identify the two major areas of concern involving handling procedures for
components and assemblies.
• Identify the two categories of electronic assemblies.
• Identify the recertification requirements for the 2M technicians.

Topic See Page

Introduction 2-215
Purpose of the Miniature/Microminiature Program 2-217
References 2-218
Miniature/Microminiature Repair 2-222
2M Workstation 2-225
Classifications 2-227
Personnel 2-228

Purpose of the Miniature/Microminiature Program
Introduction The purpose of the MMP is to establish policies, responsibilities, and

requirements for the repair of miniature/microminiature electronic assemblies
and the certification/recertification and training of personnel.

References
References You must be thoroughly familiar with the required reference materials needed
to manage a MMP within your workcenter. Listed below are the required
references.
• NAVAIR 01-1A-23, Electrostatic Discharge Control Program for

• NAVAIR 17-15-99, PRC-2000-2M, Electronic Rework Power Unit
• NAVAIR 17-600-193-6-2, PRC-2000-2M, System Maintenance

Requirements Cards
NAVAIR 01- This manual contains instructions to perform organizational, intermediate,

1A-23, and depot-level maintenance on electronic assemblies. It is to be used
Electrostatic whenever repair procedures are not specified in the equipment technical
Discharge manuals, but not to be used in place of those technical manuals. In cases
Control where a repair procedure is not specified in either the equipment technical
Program for
Protection of
manual or in this manual, another procedure considered best practice may be
Electrical and used after consulting with local quality assurance. These procedures are not
Electronic to be used to perform unapproved modifications to electronic circuit card
Parts, assemblies.
Assemblies and
Equipment This manual also provides guidelines for the Electrostatic Discharge (ESD)
Control Program in accordance with ANSI/ESD S20.20 for any activity that
performs any of the following items that contain electrical or electronic
components or devices that are susceptible to damage caused by the discharge
of static electricity.
• Tests
• Manufactures
• Repairs
• Assembles
• Installs
• Packs
• Labels
• Stores
• Handles

NAVAIR 17- This manual describes and provides information necessary to operate and
15-99, PRC- maintain the PRC-2000-2M System. Trained certified 2M electronic repair
2000-2M, technicians use this system to accomplish high quality repairs to circuit card
Electronic assemblies and electronic modules.
Rework Power
Unit
NAVAIR 17- This manual contains the minimum Calendar/Hour/Start/Special/Preservation/

600-193-6-2, Conditional (if applicable) requirements necessary to ensure the SE or ATE is
PRC-2000-2M, safe for operational use. Clearances, pressures, tolerances, illustrations,
System support equipment required, and manual references are presented where
Maintenance pertinent.
Requirements
Cards
Challenge True or False. The NAVAIR 01-1A-23 contains instructions to perform all
three levels of maintenance on electronic assemblies.
ANSWER – True. The NAVAIR 01-1A-23 contains instructions to perform

all three levels of maintenance on electronic assemblies and is to be used
whenever repair procedures are not specified in the equipment technical
manuals, but not to be used in place of those technical manuals. See page 2-
218.

following information pertains to the MMP within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the MMP
of the Program as per the NAMP.
Workcenter
Supervisor • Provide Miniature/Microminiature Program and follow-on training to
personnel.

• Ensure only 2M certified technicians perform electronic assembly repair.
• Ensure sufficient expertise is available for conducting all required

electronic assembly repair inspections.
• Ensure 2M technicians complete training conducive to maintaining

required certification levels.
• Observe ESD protective measures while performing 2M repairs.

MMP and/or equipment. Follow-on training shall also be provided as
required.

• ESD protected work areas
• Identification
• Testing
• Classification
Reference References involving MMP are too numerous for your Marines to truly
Publications understand indepth. Therefore, as in all other indoctrination, it should be
tailored to familiarize your Marines in this program and not make them
experts.

Miniature/Microminiature Repair
Miniature Miniature electronic repair is the rework and repair of single and double-sided
Electronic circuit card assemblies (CCAs). Miniature techniques and processes include
Repair removal and replacement of discrete components and integrated circuits,
conformal coatings, damaged conductors and CCA laminate; wiring and
soldering of various terminals or connectors; and electrostatic discharge
(ESD) familiarization and handling procedures to minimize ESD risks to
CCAs.
Microminiature Microminiature electronic rework and repair is a more intricate level of repair
Electronic involving high-density component packaging, multi-layer conductor and
Repair laminate, jumper wiring, flexible printed circuitry, edge-lighted panel, welded
leads, and surface mount technology (SMT).
2M Repair Limitations include

Limitations
• Internal repairs to special components and assemblies critically sensitive
to frequency, voltage, or temperature.
• Repairs requiring special calibration and rework/repair equipment. These

repairs are not authorized at the organizational and intermediate
maintenance levels.
Handling Proper handling practices are essential to the integrity of any component or
Practices assembly. Physical damage or contamination may result.
Equipment Improper handling can readily damage components and assemblies (e.g.,
Damage cracked, chipped or broken components and connectors; bent or broken
terminals; and badly scratched board surfaces, conductors, pads and lands).
Minimize the handling of electronic assemblies to prevent damage. Never
stack electronic assemblies or physical damage may occur.

Miniature/Microminiature Repair, Continued
Contamination Avoid contaminating solderable surfaces before soldering. Whatever comes

in contact with these surfaces must be clean. Contamination can occur when
using bare hands or fingers. This may cause soldering and coating problems.
Body salts and oils and unauthorized hand creams are typical contaminants.
Body oils and acids reduce solderability, promote corrosion, and dendric
growth. It also causes poor adhesion of subsequent coatings or initiates
encapsulation. Normal cleaning procedures will not always remove such
contaminants. When gloves are used to handle assemblies, they need to be
changed as frequently as necessary to prevent contamination. After soldering
and cleaning operations, the handling of electronic assemblies still requires
great care. Handle electronic assemblies with clean hands by the CCA edges.
Concepts of Maintenance concerning the 2M repair program are divided into two
Maintenance categories:
• Preventative maintenance
• Corrective maintenance
Preventative Preventive maintenance consists of routine inspections and upkeep of

Maintenance equipment.
Corrective Corrective maintenance consists of the procedures used for correcting

Maintenance equipment failure. Corrective maintenance is divided into two distinct
actions:
• Diagnostics (troubleshooting and trouble isolation)

• Repair
Diagnostics Diagnostics determines the actual cause and effect of equipment failure.
Repair Repair is the physical repair actions that return equipment to its original
function and reliability.

Miniature/Microminiature Repair, Continued
Feasibility of Prior to the initiation of the repair process, the technician must determine the
Repair feasibility of repair. Several considerations must be weighed.
• Type and extent of damage

• Repair capability
• Parts availability
• Time and cost of repair
• Operational/mission needs
• Procedural analysis
Baking Baking is used to eliminate absorbed moisture. Whenever possible, circuit

card assemblies (CCAs) should be baked prior to soldering, de-soldering and
coating operations to prevent blistering, measling or other laminate
degradation. Recommended baking times and temperatures are given below.
Longer than recommended bakeout times and higher than recommended
temperatures may degrade CCA and component solderability. Work
processes should begin as soon as possible after removal from the oven due to
water re-absorption.
Baking Temperature Baking Time

248ºF (120ºC) 3 1/2 to 7 hours
212ºF (100ºC) 8 to 16 hours
176ºF (80ºC) 18 to 48 hours
Challenge True or False. The categories of maintenance involving 2M repairs are

preventative and diagnostic.
ANSWER – False. Maintenance concerning the 2M repair program is

divided into two categories: preventative maintenance and corrective
maintenance. See page 2-223.

2M Workstation
Description A typical 2M workstation encompasses an area used to perform miniature and

microminiature repair of electronic assemblies. The repair area is defined as
the portion of work surface where repairs are performed.
Physical The technician must be comfortable at the workstation. They must sit with
Requirements their legs under the workbench to properly operate footswitches, which are on
the deck or on a permanently installed stable platform. The workstation
should have an easily cleanable surface with a secured and lockable area for
tool storage. The repair area of the workstation should be a minimum of 24
inches (609.6 mm) deep by 30 inches (762 mm) wide. The repair areas of the
workstation should be light colored, burn resistant and must provide for ESD
protection. The repair area will not have any items stored on it at any time,
other than the equipment being repaired.
Electrical There are no special requirements for the 2M workstation. Standard electrical
Requirements safety precautions should be observed. There should be a minimum of four
115 VAC, single phase, 60 Hz, 15 amp outlets.
Required The 2M workstation equipment consists of special electrical and mechanical

Equipment units, tools, and materials to perform miniature and microminiature repair on
electronic assemblies. The basic repair station contains a power unit,
attaching handpieces and auxiliary equipment.
Compressed Compressed air should not be oiled, with less than 0.25% moisture. Use a
Air maximum of 10 PSI to remove matter from CCAs. Observe all applicable
safety precautions when using compressed air.
Consumable When storing consumable materials, consideration shall be given to shelf life,
Materials flammability, and contamination. All consumables such as flux, solvents, and
solders must be labeled with type and expiration date.

2M Workstation, Continued
Challenge True or False. Compressed air used in 2M maintenance should be lightly

oiled.
ANSWER – False. Compressed air should not be oiled and less than 0.25%
moisture. See page 2-225.

Classifications
Classification of Electrical and electronic assemblies are subject to classifications by intended

Electronic end-item use. Three general end product classes have been established to
Assemblies reflect differences in complexity, functional performance requirements, and
verification (inspection/test) frequency.
Class Description
1 General electronic products include products suitable for
applications where the major requirement is a function of the
completed assembly.
2 Dedicated service electronic products include products where
continued performance and extended life is required, and for which
uninterrupted service is desired but not critical. Typically the end-
use environment would not cause failures.
3 High performance electronic products includes products where
continued high performance or performance-on-demand is critical.
Equipment downtime cannot be tolerated and end-use environment
may be uncommonly harsh, and the equipment must function when
required, to include life support or other critical systems.

Personnel
Introduction A 2M repair is a skill intensive task. Maintaining acceptable skills and

dexterity requires continuous training/practice that shall encompass all
procedures authorized for each individual's 2M certification level. Only
personnel that demonstrate the skills needed and have completed the proper
training shall be allowed to conduct such maintenance.
Initial Initial certification requirements are as follows:

Certifications
of Personnel • Initial miniature certification will be granted upon completion of
Miniature Electronics Repair course.
• Initial microminiature certification will be granted upon completion of

Microminiature Electronics Repair course and the prerequisite Miniature
Electronic Repair course.
Recertification Recertification requirements are as follows:

of Personnel
• Skill proficiency of 2M technicians shall be evaluated every 18 months.
• 2M technician recertifiers shall be recertified every 18 months.
• Activities without a 2M technician enables recertifiers to request such

service from the nearest activity authorized to conduct 2M technician
recertifications.
• ACCs/TYCOMs will be consulted when 2M technician recertifications

must be requested from off-station.

Personnel, Continued
2M Technician
Re-certifier
Letter

Lesson 9 Exercise
Item 1 The purpose of the MMP is to establish policies, responsibilities, and

requirements for the repair of miniature/microminiature electronic assemblies
and the _________________ and training of personnel.
a. classification/reclassification
b. certification/recertification
c. assignment/reassignment
d. organize/reorganize
Item 2 Which of the following references is used when repair procedures are not
specified in the equipment technical manuals.
a. NAVAIR 01-1A-23, Electrostatic Discharge Control Program for

b. NAVAIR 17-15-99, PRC-2000-2M, Electronic Rework Power Unit
c. NAVAIR 17-600-193-6-2, PRC-2000-2M, System Maintenance
Requirements Cards
d. OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)
Item 3 The two major areas of concern involving handling procedures for
components and assemblies are physical damage and
a. cracked chips.
b. broken boards.
c. use of gloves.
d. contamination.
Item 4 Electronic assemblies are classified into __ different categories.
a. 2
b. 3
c. 4
d. 5

Item 5 Every ___ months, 2M technicians are to be recertified.
a. 10
b. 12
c. 18
d. 20


1 b 2-217
2 a 2-218
3 d 2-222
4 b 2-227
5 c 2-228
Summary In this lesson, you learned how to manage/monitor the Miniature/

Microminiature Program (MMP) within your workcenter. In the next study
unit, you will learn about Tool and Material Upkeep Programs.

STUDY UNIT 3
TOOL AND MATERIAL UPKEEP PROGRAMS
Overview
Content Tool and material upkeep programs ensure the assets for maintenance and
flight are in peak performance. Without such programs, these assets would
quickly deteriorate to a point at which they become useless and/or a safety
hazard to personnel and equipment/aircraft. This study unit will identify the
programs mandated by OPNAV.
Scope The programs outlined in this study unit pertain to workcenter supervisors,
Marine Corps personnel and equipment. Strict adherence to these programs
will ensure the safest possible atmosphere for all personnel and equipment.
In this Study This study unit contains the following lessons.

Unit
Topic See page
Oil Consumption Program 3-3
Tool Control Program 3-13
Corrosion Prevention and Control Program 3-43
Support Equipment Operator Training & Licensing Program 3-65


LESSON 1
OIL CONSUMPTION PROGRAM
Introduction
Scope The Oil Consumption Program provides Navy and Marine Corps O-level
activities the guidance necessary to achieve the required performance,
efficiency, and logistic support by establishing policy for integrated oil
consumption requirements. All aspects of oil consumption/servicing,
documentation, and trend analysis are critical to flight safety.
• Guidance needed as a workcenter supervisor to monitor the Oil

Consumption Program within an aviation maintenance activity.
• Proper procedures for managing an Oil Consumption Program within your

workcenter.

Objectives
• Identify the purpose of the Oil Consumption Program.
• Identify the responsibilities of the workcenter supervisor in the Oil

Consumption Program.
• Identify the personnel responsible for ensuring oil consumption rates are
calculated and documented on the Engine/Gearbox Oil Consumption
Record.
Topic See Page

Introduction 3-3
Purpose of the Oil Consumption Program 3-4
References 3-5
Naval Aviation Maintenance Program (NAMP) 3-6
Oil Servicing and Documentation 3-8

Purpose of the Oil Consumption Program
Introduction The purpose of the Oil Consumption Program is to establish policies,

responsibilities, and requirements for monitoring aircraft equipment
conditions in an effort to detect impending failures without equipment
removal or extensive disassembly.

References
Required Listed below are the required references needed to manage an Oil
References Consumption Program within your workcenter:
• Local Naval Aviation Maintenance Program Standard Operating

Procedures (NAMPSOPs)/Maintenance Instruction Manuals (MIMs)
• OPNAVINST 4790.2H, NAMP

new equipment. Always check for the most current use for reference
materials.
NAMPSOPs NAMPSOPs are implemented using the instructions in OPNAVINST

4790.2H, Chapter 10, Maintenance Programs and Processes and specific
program related technical manuals. Many programs within the aviation
community require NAMPSOPs. See OPNAVINST 4790.2H, Chapter 10,
Maintenance Programs and Processes for a listing.

OPNAVIST The purpose, definition, objective, and methodology of the Naval Aviation
4790.2H NAMP Maintenance Program (NAMP) are covered in Study Unit 1, Lesson 1,
Maintenance Training Program. The following information pertains
specifically to the Oil Consumption Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the Oil
of the Consumption Program as per the NAMP.
Workcenter
Supervisor • Ensure Oil Consumption Program indoctrination and follow-on training is
• Ensure training to include personnel responsibilities and document on the

NAMP Indoctrination Training Sheet (see Study Unit 1, Lesson 1,
Maintenance Training Program) in the individual's qualification/
• Ensure oil-servicing units are free of contamination.
• Conduct oil servicing per applicable NAMPSOPs/MRCs
Aircrew Listed below are the minimum responsibilities of an aircrew.

Responsibilities
• Be thoroughly familiar with oil servicing procedures.
• Ensure oil consumption rates are calculated and documented on the
Engine/Gearbox Oil Consumption Record prior to flight.


aviation oils and fluids. Follow-on training shall be provided as required.
Scope Tailor indoctrination training to the specifics of the maintenance performed

by your personnel. This training shall include, but not limited to

• Storage and safe handling of aviation oils and fluids
• Safety hazards involving aviation oils and fluids
Reference References involving aviation oils and fluids are too numerous for your
them experts.

Oil Servicing and Documentation
Introduction Only qualified/certified personnel shall perform oil servicing. While training
personnel in oil servicing, qualified/certified personnel shall be present for all
aspects of on-the-job training and documentation. Documentation of oil
consumption provides valuable information in the detection of trends. Trends
of unusual oil consumption may indicate a possible failing engine or gearbox.
Use of Servicing of engines and gearboxes shall be performed using only approved
Approved oils/fluids and oil-servicing units. All oils/fluids used during servicing shall
Oils/Fluids be free of contamination and obtained through proper channels. No
oils/fluids from an outside source shall be used.
Oil Servicing Aviation oils and hydraulic fluids contamination were covered in Study Unit
Unit 2, Lessons 2 and 4. Refer to these lessons for questions regarding
Contamination contamination.
Performing Oil servicing is outlined in NAMPSOPs and MIMs for each type/model/series
Service (T/M/S). Never perform any service without being thoroughly versed in all
aspects. This pertains not only to maintenance personnel, but to all aircrew.
Engine/ Servicing personnel shall inform maintenance control and document on the
Gearbox Oil Engine/Gearbox Oil Consumption Record how many ounces of oil were
Consumption added to aircraft engines/gearboxes. Aircrew must ensure oil consumption
Record rates are calculated and documented on the Engine/Gearbox Oil Consumption
Documentation Record prior to flight.
Safe for Flight Safe for flight certified personnel must receive adverse oil consumption
Personnel values/trends certification training as part of the qualification procedures for
certification.

Oil Servicing and Documentation, Continued
Engine/ The following is a form of the Engine/Gearbox Oil Consumption Record.

Gearbox Oil
Consumption
Record

Oil Servicing and Documentation, Continued
Challenge True or False. Aircrew must ensure oil consumption rates are calculated and
documented on the Engine/Gearbox Oil Consumption Record prior to flight.
ANSWER – True. Servicing of engines and gearboxes shall be performed

using only approved oils/fluids and oil-servicing units. See page 3-8.

Lesson 1 Exercise

Item 1 The purpose of the Oil Consumption Program is to establish policies,

responsibilities, and requirements for monitoring aircraft equipment condition
in an effort to detect _______________ without equipment removal or
extensive disassembly.
a. engine fan leaks

b. oil contamination
c. improper gearboxes
d. impending failures
Item 2 When conducting training for oil servicing, the workcenter supervisor must
ensure that qualified/certified personnel shall be present for all aspects of on-
the-job training and
a. consumption.
b. documentation.
c. leakage.
d. detection.
Item 3 Aircrew shall ensure oil consumption rates are calculated and documented on
the Engine/Gearbox Oil Consumption Record prior to
a. maintenance.
b. flight.
c. servicing.
d. close of business.


1 d 3-4
2 b 3-8
3 b 3-8
Lesson In this lesson, you learned how to manage/monitor the Oil Consumption
Summary Program within your workcenter. In the next lesson, you will learn about the
Tool Control Program.

LESSON 2
TOOL CONTROL PROGRAM
Introduction
Scope The Tool Control Program (TCP) provides instant inventory capability
through internally configured tool containers with each tool positioned in an
individually tailored location. The primary objectives of the TCP are to
enhance safety by eliminating accidents and equipment damage attributed to
uncontrolled tools and minimizing tool replacement costs. An effective TCP
is the responsibility of all maintenance personnel and all levels of the chain of
command.
• Guidance needed as a workcenter supervisor to monitor the Tool Control

Program within an aviation maintenance activity.
• Proper procedures for managing a Tool Control Program within your

workcenter.

Objectives
• Identify the purpose of the Tool Control Program.
• Identify the references used to manage the Tool Control Program.
• Identify the responsibilities of the workcenter supervisor in the Tool

Control Program.
• Identify the responsibilities of aircrew personnel.
• Identify the responsibilities of the tool control representative.
• Identify the Tool Container Shortage List.
• Identify the Missing/Broken/Worn Tool Report.

Topic See Page

Introduction 3-13
Purpose of the Tool Control Program 3-15
References 3-16
Tool Control Manual 3-17
Aircrew 3-20
Workcenter Tool Control Representative 3-22
Tool Containers and Tools 3-23
Tool Container Shortage List 3-28
Missing/Broken/Worn Tool Report 3-30
Change/Deviation Requests 3-35

Purpose of the Tool Control Program
Introduction The purpose of the Tool Control Program (TCP) is to establish policies and
responsibilities for implementing, maintaining, controlling, storing, replacing,
and inventorying common hand tools.
Scope The TCP is applicable to all Navy and Marine Corps O-level and I-level
activities performing or supporting aircraft maintenance. The TCP shall
apply to all commercial and other government activities performing contract
maintenance, production, or other support functions on naval aircraft.

References
Required Listed below are required references needed to manage a Tool Control
References Program within your workcenter:
• Local Command Procedures for Naval Aviation Maintenance Program

Standard Operating Procedures (NAMPSOP) and MIMs
• NAVAIR 17, Tool Control Manuals (series)

new equipment. Always check for the most current references.
NAMPSOPs NAMPSOPs are implemented using the instructions in OPNAVINST

4790.2H, Chapter 10, Maintenance Programs and Processes and specific
program related technical manuals. Many programs within the aviation
community require NAMPSOPs. See OPNAVINST 4790.2H, Chapter 10,
Maintenance Programs and Processes for a listing.
NAVAIR 17, These manuals present the Tool Control Program for Naval and Marine
Tool Control aviation maintenance activities. Information presented in these manuals
Manual includes procedures, methods, and detailed instructions for the operation of
the program, duties of key personnel, materials list, container identification,
and fixture fabrication instructions. Container layouts and tool inventories
are also included. The procedures contained therein have been tried, proven
practical, and are considered essential for positive control and accountability
of tools.

Tool Control Manual
Introduction Tool Control Manuals (TCMs) contain information that includes material
requirements, tool inventories, and detailed instructions for the
implementation and operation of the TCP for a specific type/model aircraft.
Scope Compliance with applicable TCMs is mandatory for all O-level activities.
Activities with more than one type/model/series (T/M/S) aircraft may
consolidate tools from each TCM. Likewise, activities operating a single
aircraft, for example, Operations Maintenance Division (OMD)/Station
Operations and Engineering Squadron, may consolidate containers to
conform to their exclusive mode of operations. These consolidations shall be
processed as a TCM deviation.
Non-Existent In the event a TCM does not exist for a specific T/M/S aircraft, a local TCM
TCMs will be developed by the reporting custodian using other published TCMs as
guidance, and submitted via the chain of command to the cognizant wing for
approval for local use.
NAVAIR 17 Activities using the NAVAIR 17 series shall identify the tools required using
Series the tool inventory list provided by the TCM.

following information pertains specifically to the TCP within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the TCP as per
of the the NAMP.
Workcenter
Supervisor • Ensure TCP indoctrination and follow-on training is provided to
personnel.
• Ensure training includes personnel responsibilities. Document

responsibilities on the NAMP Indoctrination Training Sheet (see Study
Unit 1, Lesson 1, Maintenance Training Program) in the individual's
• Assign a workcenter tool control representative.

• Inventory all tool containers, special tools, and PPE at the beginning and
end of each shift and document change of shift inventories using a
logbook, such as a pass down log.
• Ensure tool containers are FOD free at all time.
• Ensure all personnel are familiar with missing/broken/worn tool reporting

procedures.
• Ensure a Tool Container Shortage List is maintained within each tool

container, excluding tool pouches and electrostatic sensitive discharge
(ESD) workcenter's tool containers.
• Submit Tool Container Change Requests, Tool Control Manual

Change/Deviation Requests, or Technical Publications Deficiency Report
(TPDRs) (as applicable) for changes/deviations to tool containers.
• Accompany the quality assurance representative (QAR) during audits.
Correct minor and major discrepancies requiring significant remedial
action immediately.
Challenge True or False. Inventory all tool containers, special tools, and PPE at the
beginning and end of each shift and document change of shift inventories
using a logbook, such as a pass down log.

Tool Control Program. Follow-on training shall be provided as required.

• All reporting procedures for missing/broken/worn tools
• All documentation and change/deviation requests
• Tool container configurations and procedures
• Maintenance and upkeep of tools and tool containers
Reference References involving the Tool Control Program are too numerous for your
them experts.

Aircrew
Introduction Aircrew personnel must be thoroughly versed in all aspects of the TCP. The
importance of this lies in safety of flight issues. Before the aircraft can go on
a flight, it must be signed off as “safe for flight.” The aircrew must know the
aircraft is not only sound for flight, but also that all tools have been accounted
for before doing so. The Marine and the lives of all aboard the aircraft
depend on it.
Responsibilities Listed below are the minimum responsibilities of aircrew as per the NAMP.
of Aircrew
• Be thoroughly familiar with the TCP.
• Ensure tool containers are FOD-free at all times.
• Perform the necessary steps outlined in this lesson if a missing tool is
reported.

Aircrew, Continued
Actions for a If a missing tool is reported, the aircrew shall perform the following steps.
Missing Tool
Reported
Step Action
1 Notify the pilot that a tool is missing, initiate a Missing/Broken/
Worn Tool Report, and conduct a thorough search of the aircraft.
The Missing/Broken/Worn Tool Report will be completed at the
end of the flight if the tool is discovered missing in flight.
Note: If possible, the aircraft may be recalled from its flight if

tool is discovered to be missing.
2 The flight engineer, crew chief, or senior maintenance man (in the
absence of an assigned crew chief) will assist/conduct missing tool
investigations and annotate findings on the Missing/Broken/Worn
Tool Report.
3 The flight engineer, crew chief, or senior maintenance man (in the
absence of an assigned crew chief) shall assume those
responsibilities of the workcenter supervisor applicable to the TCP
for in-flight maintenance or maintenance performed on the aircraft
at other than home station.
4 If the aircraft is not airborne, ground until the investigation of the
missing tool is completed. In the event a tool or part of a tool is
missing and not recovered, the pilot shall release the aircraft only
after an investigation is conducted to confirm the missing tool/tool
part is not in the aircraft.
5 Upon return to home station, notify Maintenance Control/
Production Control that a missing tool was not located and give
them the completed Missing/Broken/Worn Tool Report.
Challenge True or False. Aircrew need not be well versed in the TCP.
ANSWER – False. Aircrew must be thoroughly familiar with the TCP. See
page 3-20.

Workcenter Tool Control Representative
Introduction The workcenter tool control representative (TCR) is designated by the

workcenter supervisor to be a mature, responsible individual capable of
handling a task of such great importance. He/she is responsible to the
workcenter supervisor for all matters concerning the workcenter TCP.
Responsibilities Listed below are the minimum responsibilities of the workcenter TCR as per
of the the NAMP.
Workcenter
Tool Control • Responsible to the workcenter supervisor for all matters concerning the
Representatives workcenter TCP.
• Maintain tools and tool containers assigned to the workcenter and ensure
containers are FOD-free at all times.
• Conduct semiannual tool container inventories with the TCP coordinator

and provide the inventory results to the workcenter supervisor.
• Ensure replacement tools are etched with the organization code,

workcenter, and tool container number upon receipt from the TCP
coordinator.
• Maintain a TCP file for all information pertaining to the workcenter TCP.
• Provide assistance to the workcenter supervisor in the preparation of

documents outlined in this lesson.
Assistant Tasks Below is some of the assistance the TCR provides to the workcenter
supervisor in both O- and I-level maintenance shops. Assistance includes, but
not limited to
• Technical Publications Deficiency Report (TPDRs) (O-level)

• Tool Control Manual Change/Deviation Requests (O-level)
• Tool Container Change Requests (I-level)
• Missing/Broken/Worn Tool Reports (O-level/I-level)
Challenge True or False. The workcenter TCR is responsible to the tool room for all
matters concerning the workcenter TCP.
ANSWER – False. The workcenter TCR is responsible to the workcenter

supervisor for all matters concerning the workcenter TCP. See page 3-22.

Tool Containers and Tools
Introduction Strict adherence to the TCP is a must for maintaining tool containers that are
not only functional but also operationally safe and accountable. Without the
proper controls in place, tools will not only degrade in quality to the point of
them being useless, but also accountability comes into question which puts
safety of flight and personnel at risk. Accountability of tools is of utmost
importance when it comes to maintenance on aircraft and equipment.
Construction of Activities using the NAVAIR 17 series shall establish tool container
Tool configuration per the TCM. Assemble supporting hardware and drill/cut
Containers required holes for holding tools securely in containers. It is essential that
hardware placement, for example, clips and brackets, and drilling of holes be
exactly as indicated in the drawings. If a tool is not available, do not drill/cut
the required holes until the tool becomes available. Record the missing
tool(s) on the Tool Container Shortage List.
IMAs and activities not on an established TCM shall determine the number of
tool containers required for each workcenter.
Tool Silhouettes The position of each tool shall be silhouetted against a contrasting
background. The silhouetted outline will highlight each tool location within
the container. Silhouetting may be accomplished by use of paint, etching, or
other similar methods that do not contribute to FOD or become a system
contamination hazard. Each tool location shall be numbered with a
corresponding number on the inventory list.
Markings Tool containers shall be numbered with the aviation organization code,
workcenter code, and container number, for example, AC3-110-2. If the
workcenter is authorized more than one of the same type tool container, the
additional containers shall be identified with a numerical suffix, for example,
AC3-110-2-1.
The outside of the container shall include the appropriate stenciled warning,
"contains tools too small to etch," "contains tools unsuitable for etching," or
"OXYGEN USE ONLY" for applicable workcenters.

Tool Containers and Tools, Continued
Etchings All tools within containers shall also be etched with the appropriate markings.
For example, a tool from tool container, AC3-110-2, shall be etched with the
same markings as on the side of the tool container (AC3-110-2).
Any replacement tools shall also be etched and appropriate annotations be

made on the tool container shortage list.
Etch as many tools as possible, including all pieces of a set. Inventory lists
shall identify those tools too small or unsuitable to etch by the use of an
asterisk (*) in the left margin, for example, in a 10-piece allen wrench set,
annotate in the inventory remarks column that only the 3/32 wrench is too
small to etch.
Tool Pouches Tool pouches shall be fabricated to identify each tool within a separate
position. Each tool pouch shall have a flap cover that attaches securely on all
edges to ensure tools do not fall out. Tool tags will not be included in tool
pouches.
Internal Activities using TCMs will maintain a copy of the TCM inventory list, TCM
Paperwork diagram, and Tool Container Shortage List within all tool containers, firmly
attached, so they do not become a source of FOD.
IMAs and activities not on an established TCM will maintain a copy of the
inventory list, provided by the TCP coordinator, and Tool Container Shortage
List within all tool containers, firmly attached, so they do not become a
source of FOD.
Tool Tags Ensure portable tool containers, excluding pouches and established
"OXYGEN USE ONLY" containers, contain tool tags to be used to check out
additional tools when required to supplement a tool container.

Consumables Ensure consumable materials not included on the tool container inventory,
such as safety wire, electrical tape, and acid brushes, are accounted for prior
to and at the completion of each task. Tool containers shall not be used for
hardware storage.
Shop Tool A shop tool container is designed to accommodate maintenance actions which
Containers require multiple or special tools. When using a portable container for a
maintenance action, a tool tag from the portable container shall be used to
check out a tool from the shop container. If not using a portable tool
container, a shop container logbook shall be used. Ensure the shop container
logbook contains at a minimum the following:
• Tool Issued To
• Box/Item Number
• JCN/MCN
• Time Out and Workcenter Supervisor/CDI Signature
• Time In and Workcenter Supervisor/CDI Signature
Portable Tool Portable tool containers are to be used for performing maintenance on one
Containers aircraft/piece of equipment at a time. Tools from portable containers may not
be checked out for simultaneous maintenance on multiple aircraft/equipment.
Special Tools Special tools are subject to the same positive control and inventory processes
as are standard tools. Therefore, special tools held by the workcenter or tool
room shall, where feasible, be silhouetted against a contrasting background or
placed in silhouetted containers. Special tools shall be etched, inventoried,
and diagrammed under the same conditions as standard hand tools.
Multiple Piece Ensure multiple piece tools containing a type of locking nut that can fall off is
Tools peened or spot welded to eliminate the possibility of FOD, for example, hex
keys and feeler gauges.

Inventories The workcenter supervisor must ensure that all tool containers, special tools,
and personal protective equipment (PPE) are inventoried at the beginning and
end of each shift. All shift inventories shall be documented using the
inventory sheets for each tool container, special tool case, PPE board, and
annotated in the pass down logbook as all tools accounted for.
In addition to the start and end of each shift, all tool containers involved in a
maintenance task shall be inventoried and appropriate documentation be done
• Before any maintenance task is started

• After any maintenance task is completed
• At each work stoppage
The workcenter supervisor, collateral duty inspector (CDI), or quality

assurance representative (QAR) shall document accountability. No
exceptions!
Inventory List Inventory lists shall identify each tool by item number, nomenclature, specific
quantity, and NSN. Tools that are multiples shall be identified in detail, for
example, "stamping dye set 10 pieces plus 2-piece case total 12," or
"feeler/depth gauge 14 blades," or "hacksaw with blade."
FOD As outlined in the FOD Program, inventory of all workcenter gear is

paramount. All tools, tool containers, PPE, SE, and any associated gear must
be inspected, clean, and FOD-free at all times. The spread of FOD can result
as non-compliance. Typical FOD such as safety wire, rubber, plastic,
washers, nuts, and bolts can spread from a maintenance task to the
workcenter, aircraft, and/or flight line. This puts all personnel and equipment
at risk for failure and/or injuries.
To reduce the possibility of FOD and for ESD considerations, tool pouches
and ESDS workcenters shall keep the inventory lists, diagrams, and shortage
list in the tool control representative’s TCP file.

Outside Source Under no circumstances shall personal or outside source tools or equipment
Tools and be used for any maintenance task on or for any military equipment or aircraft.
Equipment Only tools and equipment issued through proper channels shall be used. If
not adhered to, this will totally degrade the TCP and cause serious safety
issues. If outside source tools or equipment are brought in, who will account
for them? How do you know if they have all been accounted for? Not only
should you not allow any of your Marines to use any outside source tools or
equipment, but stop and report any violations. What if an aircraft mishap
and/or injuries result? It is better to be the bad guy in stopping and reporting
violations than to explain why you did nothing when you knew violations
were taking place. It is not just dollars in equipment costs and man-hours lost
in jeopardy, but also the lives of fellow Marines.
Inspections As workcenter supervisor, you shall accompany the QAR during audits. Any
minor discrepancies shall be corrected immediately. Any major discrepancies
requiring significant remedial action should be followed up expeditiously
with quality assurance. The workcenter tool control representative shall
conduct semiannual tool container inventories with the TCP coordinator and
provide results to the workcenter supervisor. The workcenter tool control
representative shall also keep a TCP file for all information that pertains to
the workcenter and keep the workcenter supervisor abreast on any changes or
problems that may arise.

Tool Container Shortage List
Introduction A Tool Container Shortage List is maintained in each tool container

regardless if the container is short or not. This will be inspected each time the
container is inventoried. The Tool Container Shortage List indicates whether
the tool container has all the tools called for in that particular container. In
some cases, the container may be short of some tools. If that is the case, the
tool room has not issued a replacement for previously broken or missing tools
because of supply chains or a shortage of a suitable replacement.
Example of a
Tool Container
Shortage List

Tool Container Shortage List, Continued
Challenge True or False. A Tool Container Shortage List is to be maintained in each

tool container regardless if the container is short or not.

Missing/Broken/Worn Tool Report
Fill Out Report Missing/Broken/Worn Tool Reports shall be filled out and routed through
proper channels whenever a tool falls into any of these categories. Never try
to replace a tool through your own channels or an outside source to
accommodate maintenance. This again degrades the tool control program and
questions the safety of personnel and equipment.
Workcenter The following procedures shall be used in the event of a missing tool by the
Procedures workcenter.
• Notify Maintenance/Production Control of a missing tool and conduct a

thorough search of the work area(s).
• Initiate a Missing/Broken/Worn Tool Report to report the missing tool

and forward to Maintenance/Production Control.
Maintenance/ In the event of a missing tool, the Maintenance/Production Control will do the
Production following:
Control
Procedures • Notify the Maintenance Officer (MO), Aviation Maintenance Officer
(AMO), Maintenance Material Control Officer (MMCO), Carrier Air
Wing Maintenance Officer (CVW MO), and Flight Deck Control (as
applicable), and QA that a tool is missing.
• Flag the ADB and the Aircraft Status Query/Workload Inquiry Screen/
VIDS board to prevent release of the aircraft/components/engines/
equipment prior to completion of the missing tool investigation. Initiate a
MAF if necessary.
• Flag the workcenter status board and stop production for the job involved
(IMA only).

Missing/Broken/Worn Tool Report, Continued
Maintenance/ • Notify supported activity, ASD S6 Division or squadron, if any

Production equipment/component has been certified as RFI from the workcenter/tool
Control container involved. Resume production only after the investigation/
Procedures, paperwork is completed or the tool is accounted for. If a suspect
continued
component has been delivered to a supported activity, it shall be turned in
on a work request for an internal FOD check. After an internal FOD
check has been completed by a CDI/QAR, the item is "CERTIFIED FOD
FREE. " The hard copy of the work request shall accompany the original
MAF.
• Maintenance/Production Control shall forward the Missing/Broken/Worn

Tool Report to quality assurance (QA).
Quality In the event of a missing tool, QA will do the following:

Assurance
Procedures • Assist/conduct missing tool investigations and annotate findings on the
Missing/Broken/Worn Tool Report.
• QA investigator shall annotate the missing tool report number and sign a
statement in the corrective action block of the MAF that a missing tool
investigation was conducted and the tool could not be found.
• The QA Officer, based upon results of investigation, will provide

recommendations.
• The MO shall release the aircraft/equipment only after an investigation is

conducted to confirm the missing tool/tool part is not in the
aircraft/equipment.
Broken or From time-to-time tools may become damaged or worn from repeated use and
Worn Tools need to be replaced. If a tool is broken or worn beyond use, all parts of the
tool must be recovered and turned in with the report. If a tool breaks and
pieces are missing, initiate missing tool procedures.
Note: Treat a broken tool with missing pieces as a missing tool.

Example of
Missing/
Broken/Worn
Tool Report

Example of
Missing/
Broken/Worn
Tool Report,
continued

Challenge True or False. The workcenter immediately notifies the tool room of a
missing tool.
ANSWER – False. The workcenter immediately notifies Maintenance

Control/Production Control of a missing tool and conducts a thorough search
of the work area(s). See page 3-30.

Change/Deviation Requests
Introduction Situations or perceived improvements may dictate the need for a change or
deviation to tool requirements. Change and/or deviation requests shall be
submitted and approved through proper channels before any changes may be
made to any tool and/or container.
TCM Change A TCM change is defined as a tool inventory or container layout diagram that
is changed and is determined to have fleet-wide applications.
Procedures A proposed change shall be forwarded with appropriate justification to the

Tool Control Model Manager, if assigned, using Tool Control Manual
Change/Deviation Request Model managers to recommend approval by
submission of TPDR to NATEC with a copy to the appropriate
ACC/TYCOM and originating activity.
Disapproved requests will be returned by the tool control model manager to

the submitting activity with appropriate comments.
Changes to the layout, content or design of a tool container shall not be made
until formal authorization is received. Retain approved changes until receipt
of new TCM.
TCM Deviation A TCM deviation departs from the formal TCM to meet unique operational
situations.
Procedures Deviation requests shall be submitted to the tool control model manager. The
model manager shall approve/disapprove the request. Deviations to layout,
content, or design of a tool container shall not be made until formal
authorization is received from the tool control model manager.

Change/Deviation Requests, Continued
Exceptional When a tool control model manager is not assigned, the aircraft controlling
Circumstances custodian/type commander (ACC/TYCOM) shall assume those
responsibilities and functions.
Tool Container Intermediate Maintenance Activities (IMAs) and activities not on an

Change established TCM requiring a change to the tool control plan shall initiate a
Request Tool Container Change Request. Changes shall not be made without
approval from the maintenance material control officer (MMCO). The TCP
manager shall maintain the approved request on file for 1 year.
Tool Control
Manual Change/
Deviation
Request
Graphic

Example of a
Tool Container
Change
Request

Challenge True or False. A TCM change is defined as a tool inventory or container

layout diagram that is changed and determined to have local applications.
ANSWER – False. A TCM change is defined as a tool inventory or container

layout diagram that is changed and determined to have fleet-wide
applications. See page 3-35.

Lesson 2 Exercise
Item 1 The purpose of the Tool Control Program is to establish policies and
and inventorying
a. SE.
b. special aircraft.
c. common hand tools.
d. aircraft.
Item 2 Which of the following references includes information involving programs

that require NAMSOPs?
a. NAVAIR 17, Tool Control Manual (Series)

b. OPNAVINST 4790.2H, Naval Aviation Maintenance Program
c. Local Command Procedures for Naval Aviation Maintenance Program
d. Maintenance Instruction Manuals
Item 3 An inspection at the beginning and end of each shift must be done for all tool
containers, special tools, and
a. parts.
b. SE.
c. consumables.
d. PPE.
Item 4 Aircrew personnel must be versed in all aspects of the TCP. Before the
aircraft can go on a flight, it must be signed off as “_____ for flight.”
a. safe
b. ready
c. prepare
d. release

Item 5 Which of the following personnel is responsible for conducting semiannual

tool container inventories with the TCP coordinator?
a. Tool room representative

b. Workcenter supervisor
c. Quality assurance
d. Workcenter tool control representative
Item 6 All multiple piece tools containing a type of locking nut that can fall off must
be peened or spot welded to eliminate the possibility of
a. slippage.
b. breakage.
c. FOD.
d. leakage.
Item 7 In the event of a missing tool, Maintenance/Production Control forwards the

Missing/Broken/Worn Tool Report to
a. SNCOIC.
b. tool control manager.
c. workcenter supervisor.
d. quality assurance.


1 c 3-15
2 b 3-16
3 d 3-18
4 a 3-20
5 d 3-22
6 c 3-25
7 d 3-31
Lesson In this lesson, you learned how to manage/monitor the Tool Control Program
Summary within your workcenter. In the next lesson, you will learn about the
Corrosion Prevention and Control Program.


LESSON 3
CORROSION PREVENTION AND CONTROL PROGRAM
Introduction
Scope The Corrosion Prevention and Control Program provides general instructions,
procedures, and information on the cleaning, preservation, and corrosion
control of Navy/Marine Corps support equipment (SE) and aircraft.
• Guidance needed as a workcenter supervisor to monitor the Corrosion

Prevention and Control Program within an aviation maintenance activity.
• Proper procedures for managing a Corrosion Prevention and Control

Program within your workcenter.

Objectives
• Identify the purpose of the Corrosion Prevention and Control Program.
• Identify the references used to manage the Corrosion Prevention and

Control Program.
• Identify the responsibilities of the workcenter supervisor in the Corrosion

Prevention and Control Program.
• Identify the types of corrosion.
• Identify the materials involved in corrosion control.

Topic See Page

Introduction 3-43
Purpose of the Corrosion Prevention and Control Program 3-45
References 3-46
Types of Corrosion 3-51
Corrosion Prevention 3-55
Materials 3-57
Personnel 3-60

Purpose of the Corrosion Prevention and Control Program
Introduction The purpose of the Corrosion Prevention and Control Program is to establish
policies, responsibilities, and requirements to minimize corrosion damage to
aircraft, engines, components, and SE, and provides direction for emergency
reclamation.
Scope This program applies to all Navy and Marine Corps activities, and
commercial and other government activities performing contract
maintenance, production, or other support functions on naval aircraft.
Discovering and correcting corrosion in the earliest stages of development
will prevent flight related mishaps, excessive out-of-service time, serious
damage to aircraft and equipment, and reduction in readiness.

References
Required Listed below are required references needed to manage a Corrosion

References Prevention and Control Program within your workcenter.

Program Manual
• OPNAVINST 8000.16, The Naval Ordnance Maintenance Management
Program (NOMMP)
• NAVAIR 01-1A-509, Aircraft Weapons System Cleaning and Corrosion
Control
• NAVAIR 15-01-500, Preservation of Naval Aircraft
• NAVAIR 16-1-540, Avionics Cleaning and Corrosion Prevention Manual
• NAVAIR 17-1-125, Support Equipment Cleaning, Preservation and
Corrosion Control
• DODINST 6050.5, DOD Hazardous Communications Program

new equipment. Always check for the most current use of references.
OPNAVINST This manual provides the guidance and direction necessary to implement the
5100.19, Navy NAVOSH Program. This guidance and direction is specifically for
Occupational
Safety and • Commanding officers
Health
Program • Safety officers
Manual for • Managers
Forces Afloat • Supervisors
• Workers for afloat commands
OPNAVINST This manual affirms all aspects of the NAVOSH Program. All levels of
5100.23, Navy command shall implement and manage the NAVOSH Safety Program in
Occupational compliance with the policies, procedures, actions, and guidance set forth by
Safety and this instruction. This manual is a wealth of knowledge for all workcenter
Health supervisors when any question concerning safety of his/her personnel arises.
Program
This manual should also be referenced frequently for changes that may have
Manual
occurred involving the safety of personnel.

OPNAVINST This manual, issues the policies, procedures, and responsibilities for activities
8000.16, The supporting or performing ordinance maintenance.
Naval
Ordnance The objective of the NOMMP is to achieve and continually improve aviation
Maintenance material readiness and safety standards established by the Chief of Naval
Management
Operations (CNO) with the optimum use of manpower, material, and funds.
Program
NAVAIR 01- This manual provides information on materials and procedures for the
1A-509, prevention and repair of corrosion damage to equipment on land or at sea.
Aircraft Supervisory and maintenance personnel shall use this manual as a guide for
Weapons all corrosion control and maintenance efforts. Contractors who are required
System to maintain and repair corrosion of aircraft and related equipment shall also
Cleaning and
use this manual.
Corrosion
Control
Note: This manual contains basic corrosion prevention and corrective
maintenance information to be used at organizational, intermediate,
and depot levels. This manual is divided into a safety summary, nine
chapters, five appendices, a glossary, and an alphabetical index.
NAVAIR 15- This manual presents factors that must be considered for the protection of
01-500, aircraft during periods of inactivity or shipment, and provides preservation
Preservation of procedures that will afford this protection. Preservation instructions included
Naval Aircraft have been tried and proved practical, necessary, and adequate for protecting
aircraft against deterioration.
NAVAIR 16-1- This manual provides organizational/unit and intermediate maintenance

540, Avionics instructions necessary to prevent, control, and repair corrosion of avionic
Cleaning and equipment afloat or ashore.
Corrosion
Prevention Supervisory and maintenance personnel shall use this manual for all avionic
Manual
corrosion control and maintenance efforts. Contractors who are required to
maintain and repair corrosion of avionic systems shall also use this manual.

NAVAIR 17-1- This manual contains general instructions, procedures, and information on the
125, Support cleaning, preservation, and corrosion control of Navy/Marine Corps support
Equipment equipment (SE). It is intended for all levels of maintenance, ashore and
Cleaning, afloat, but contains detailed information for the organizational and
Preservation intermediate levels only. Supervisory and maintenance personnel shall use
and Corrosion
this manual as a guide for all corrosion control and maintenance. Contractors
Control
who are required to maintain and repair corrosion of SE shall also use this
manual.
DODINST This manual applies to all DoD personnel who use, handle or may be
6050.5, DoD potentially exposed to hazardous materials and waste, including those
Hazardous working in contractor facilities. Where feasible, such DoD personnel may be
Communicatio included in the contractor's hazard communication program. In those cases,
ns Program DoD Components retain ultimate responsibility for program oversight,
adequacy, and DoD worker participation.
OPNAVINST The OPNAVINST 3750.6R issues policies and provisions of the Naval
3750.6R, Naval Aviation Safety Program. This instruction applies to all military and civilian
Aviation Safety personnel in every Navy and Marine Corps aviation activity throughout naval
Program aviation.
Challenge True or False. Contractors who are required to maintain and repair corrosion
of SE shall also use the NAVAIR 17-1-125.

following information pertains specifically to the Corrosion Prevention and
Control Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the Corrosion
of the Prevention and Control Program as per the NAMP.
Workcenter
Supervisor • Ensure Corrosion Prevention and Control Program and Emergency
Reclamation indoctrination and follow-on training is provided to
personnel.

• Ensure sufficient numbers of workcenter personnel are qualified in
emergency reclamation procedures, and all those with corrosion
prevention and control/emergency reclamation responsibilities comply
with the Respirator Protection Program per OPNAVINST 5100.19 and
OPNAVINST 5100.23.
• Report defective corrosion prevention and control materials received from

supply.
• Initiate corrosion control Naval Aviation Maintenance Discrepancy

Reporting Program (NAMDRP) reports as required.
• Ensure authorized corrosion prevention and control materials are used.

Materials having a shelf life shall not be used when the shelf life has been
exceeded.
• Keep current technical directives (TDs,) publications, and equipment

available.
• Ensure workcenter personnel use authorized procedures for aircraft and

equipment cleaning, corrosion treatment, and preservation.
• Ensure HAZMAT/HAZWASTE is handled and disposed of per current

directive.

Corrosion Prevention and Control Program. Follow-on training shall be
provided as required.

• All Material Safety Data Sheets (MSDSs)
• Dangers associated with HAZMAT
• Disposal of waste products (HAZWASTE)
• HAZMAT/HAZWASTE locker procedures
• Spill procedures
Reference References involving the Corrosion Prevention and Control Program are too
Publications numerous for your Marines to truly understand in depth. Therefore, as in all
other indoctrination, it should be tailored to familiarize your Marines in this
program and not make them experts.
Challenge True or False. Defective materials shall be used until supply is exhausted.
ANSWER – False. All defective corrosion prevention and control materials

received from supply shall be reported. See page 3-49.

Types of Corrosion
Introduction Corrosion is catalogued and typed in many ways. Occasionally, different

names are used for the same type of corrosion. The common types of
corrosion are described in the following blocks.
Uniform Uniform surface corrosion results from a direct chemical attack on a metal
Surface surface and involves only the metal surface. On a polished surface, this type
of corrosion is first seen as a general dulling or etching of the surface and, if
the attack is allowed to continue, the surface becomes rough and possibly
frosted in appearance. This type of corrosion appears uniform because the
anodes and cathodes are very small and constantly shift from one area of the
surface to another. An example is the etching of metals by acids. The
discoloration or general dulling of metal created by exposure to elevated
temperatures is not considered to be uniform surface corrosion.
Galvanic or Galvanic or dissimilar metal corrosion occurs when different metals are in
Dissimilar contact with each other and added with an electrolyte, such as salt water. It is
Metal usually recognizable by the presence of a buildup of corrosion at the joint
between the metals. For example, aluminum skin panels and stainless steel
doublers riveted together in an aircraft wing will form a galvanic couple if
moisture and contamination are present.
Pitting The most common corrosion on aluminum and magnesium alloys is called
pitting. It is first noticeable as a white or gray powdery deposit, similar to
dust, which blotches the surface. When the deposit is cleaned away, tiny pit
or holes can be seen in the surface. Pitting corrosion can also occur in other
types of alloys. The combination of small active anodes to large passive
cathodes can cause severe pitting.
Intergranular Intergranular corrosion is an attack on the grain boundaries of the metal. A

highly magnified cross section of any commercial alloy shows the granular
structure of the metal. It consists of quantities of individual grains, each
having a clearly defined boundary, which chemically differs from the metal
within the grain. Frequently the grain boundaries are anodic (tend to corrode
more easily) to the metal within the grain. When in contact with an
electrolyte, rapid corrosion occurs at the grain boundaries.

Types of Corrosion, Continued
Exfoliation Exfoliation is an advanced form of intergranular corrosion where the surface

grains of a metal are lifted up by the force of expanding corrosion products
occurring at the grain boundaries. The lifting up or swelling is visible
evidence of exfoliation corrosion. Exfoliation commonly occurs on extruded,
rolled, wrought, and forged high strength aluminum and magnesium parts.
Crevice/ Crevice corrosion occurs when the electrolyte has a different concentration
Concentration from one area to another. Electrolyte inside the crevice contains less oxygen
Cell and more metal ions than electrolyte just outside the crevice. As a result, the
metal surfaces, even though they may be part of the same metal, have
different activities and corrosion occurring inside the crevice. This kind of
corrosion also occurs when a surface is covered by a foreign material. There
are three general types of crevice/concentration cell corrosion
• Metal ion concentration cells

• Oxygen concentration cells
• Active--passive cells
Stress- Stress-corrosion cracking is a process requiring the simultaneous action of a

Corrosion corrodent and sustained tensile stress. Stress-corrosion cracking is found in
Cracking most metal systems. It is particularly characteristic of high-strength
aluminum alloys, high-strength steels (over 240,000 PSI) and certain other
steels, and magnesium alloys. The cracks can follow grain boundaries
(intergranular cracking) or can go across grains (transgranular cracking).
Aluminum-alloy bell cranks employing press-in taper pins, landing-gear
shock struts with pipthread-type grease fittings, clevis joints, shrink fits, and
exposed or over-stressed tubing B-nuts, are examples of parts susceptible to
stress-cracking corrosion.

Fatigue Fatigue corrosion is a result of cyclic stresses on metal in corrosive static

loads that cause stress-corrosion cracking. Corrosion can result in the
formation of a shallow pit in the stressed area. As a corrosion attack
continues, sharp deep pits form, becoming the origin of cracks, resulting in
failure of the part. This part of the attack is characteristic of any part under
regular cyclic stressing. Once the attack begins, continuous flexing prevents
the repair of protective surface coatings, and additional corrosion takes place
in the area of stress. It is difficult to detect this type of attack until cracking
develops. Frequently, by the time it is noted, the only solution is replacing
the part.
Fretting Fretting corrosion is a type of attack that develops when two heavily loaded
surfaces in contact with each other are subject to slight vibratory motion or
oscillation. The rubbing destroys protective film on the metallic surface and
also removes small metal particles from the surface. These particles will
oxidize to form abrasive materials. The continuing motion of the two
surfaces prevents formation of any protective oxide films and exposes fresh
active metal to the atmosphere. This type of corrosion destroys bearing
surfaces and dimensions, and can become severe enough to initiate cracks,
metal fatigue, and subsequent rupture. The corrosion can be reduced by
controlling the vibration or by introducing a lubricant coating between the
surfaces.
Filiform Metals coated with organic substances, such as paint films, can undergo a
type of corrosion resulting in numerous meandering threadlike filaments of
corrosion known as underfilm or filiform corrosion. Filiform corrosion
occurs independent of light, metallurgical factors in steel, or bacteria, but
takes place in relatively high humidity (65 to 95 percent). Although threads
are visible only under clear lacquers or varnishes, they also occur with some
frequency under opaque paint films. They have been observed on various
metals including steel, zinc, aluminum, and magnesium.
Microbiological Microbiological corrosion contained in seawater can be introduced into fuel

systems by contaminated fuel. The fungus growth attacks the sealing
materials used on fuel tanks. Under certain conditions, it can cause corrosion
of aluminum by aiding in the formation of concentration cells. Residues
resulting from biological growth tend to clog fuel filters and coat fuel-
capacity probes, causing erroneous fuel-quantity readings.

Challenge True or False. Fretting corrosion is an advanced form of intergranular

corrosion where the surface grains of a metal are lifted up by the force of
expanding corrosion products occurring at the grain boundaries.
ANSWER – False. Fretting corrosion is a type of attack that develops when

two heavily loaded surfaces in contact with each other are subject to slight
vibratory motion or oscillation. See page 3-53.

Corrosion Prevention
Introduction All activities responsible for aircraft maintenance shall establish corrosion
control programs as required by the parent service organization. The type of
program depends upon the environment to which the aircraft or equipment is
exposed. At sea, where conditions are normally the most severe, aircraft are
exposed to salt spray, ship stack gases, and aircraft engine exhausts. In other
environments, land-based aircraft and equipment may be exposed to industrial
gases, salts, rain, mud, near salt water and mists containing sea salts. A
comprehensive corrosion control program shall provide either a Corrosion
Control Workcenter or a Corrosion Control Team with trained personnel for
the prevention, early detection, reporting, and repair of corrosion damage.
Such a program requires a dedicated effort by all maintenance personnel to
prevent corrosion before it starts. These efforts will improve the operational
readiness of equipment and minimize costly repairs.
Definition of Corrosion is the electrochemical deterioration of a metal because of its

Corrosion chemical reaction with the surrounding environment. This reaction occurs
due to the tendency of metals to return to their naturally occurring states,
usually oxide or sulfide ores. For example, iron in the presence of moisture
and air will return to its natural state, iron oxide or rust. Aluminum and
magnesium form corrosion products that are white oxides or hydroxides.
When a water solution containing soluble salts is present, corrosion of many
alloys can occur easily at ambient temperatures. Corrosion can also occur in
the absence of water but only at high temperatures, such as those found in gas
turbine engines. However, the most common type of corrosion (and the one
that can be most effectively treated by maintenance personnel) is
electrochemical corrosion.
Prone Areas Corrosion prone areas depend on the type of aircraft or equipment and are
different for all. Refer to the corrosion control manual that corresponds to the
specific type of aircraft or equipment for the most commonly prone areas of
corrosion.
Treatment and Treatment and removal of corrosion is outlined in the Corrosion Control
Removal Manual for the specific type aircraft or equipment. Refer to the Corrosion
Control Manual for all treatment and removal techniques.

Corrosion Prevention, Continued
Cleaning Practicing a thorough regularly scheduled cleaning plan is an important aspect

of a corrosion prevention program. Cleaning helps eliminate the
accumulation of dirt, oil, water, hydraulic fluid, salt, and other contaminants
that cause, promote, or mask corrosion. Follow applicable cleaning
procedures described in the aircraft/equipment Maintenance Requirement
Cards (MRCs) and corrosion control manuals. Extremely corrosive
conditions may require this action to be performed more often.
Safety The following general precautions and safety measures must be observed
Precautions when working with the material and equipment used in corrosion elimination.
Good judgment should be used in cases where definite safety measures are
not specified.
• To prevent injury to the skin, wear rubber gloves when using remover
solutions, acids, acetone, or thinner.
• If possible, wear a rubber apron to prevent clothing from becoming
saturated with liquids that can injure the skin.
• Perform all work with toxic chemicals or solutions in a well-ventilated
area. In cases where this is impractical, wear a mask that is vented to fresh
air. Prolonged breathing of vapors can produce harmful effects and must
be avoided.
• Wear safety goggles when grinding, blasting, chipping, or spraying to
prevent eye injuries.
• Do not use flammable chemicals and solutions near an open flame, a heat
source, or an electronic source.
• To prevent deterioration of materials and finishes or damage to equipment,
use protective covers, barrier material, and masking tape to cover adjacent
rubber, fabric, plastic and neoprene materials, painted surfaces, and
electrical equipment and wiring.
• Solvents damage polycarbonate thermoplastic used in heating and
ventilating system ducting. Provide protection on these ducts when
working in surrounding areas.
Challenge True or False. Corrosion prone areas are the same for all aircraft and
equipment.
ANSWER – False. Corrosion prone areas depend on the type aircraft or

equipment and are different for all. See page 3-55.

Materials
Introduction Many of the materials and procedures involved in corrosion control are
potentially hazardous to personnel and potentially damaging to aircraft,
especially with improper use. When using any chemicals, such as paint
removers, detergents, conversion coatings, and solvents, follow the correct
procedures with appropriate protective gear to prevent personnel injury and
aircraft damage. Read the appropriate warnings and cautions prior to use of
any hazardous materials. Misuse of certain materials can damage parts or
cause corrosion that may lead to catastrophic failure. Refer to DoD
6050.5-LR, Hazardous Materials Information System, or the appropriate
parent-service organization documents for the handling, storage, and disposal
of hazardous materials. Refer to local directives and policies pertaining to
hazardous waste management. When in doubt, contact the Hazardous
Material Control and Management (HMC&M) manager.
Shelf Life of Always check the shelf life of hazardous materials before using. No
Materials HAZMAT shall be used with an expired shelf life. Materials have to be
inspected by HAZMINCEN before any material can be issued an extended
shelf life. Never take it upon yourself that just because the material looks
good that it is fit for use.
Environmental Many of the materials and procedures involved in corrosion control are also
Hazards potentially hazardous to the environment. Wherever possible, use methods
for preventing pollution, minimizing waste, and using less toxic materials.
Consult the HMC&M manager or base/station environmental office for
information about the handling, storage, and disposal of hazardous waste.
Corrosion control personnel shall comply with locally prepared authorized
use lists (AULs) for hazardous materials.
Consumable Consumable materials differ depending on which type aircraft or equipment

Materials corrosion control is being performed. Any consumable materials that have
been exposed to or used with HAZMAT shall be treated like a hazardous
material. Never throw any consumable material used with HAZMAT into a
trash receptacle. Refer to the HMC&M manager for procedures dealing with
disposal.

Materials, Continued
Groups There are many materials used in the corrosion control program such as
brushes, tape, corrosion prevention compounds, and sand papers. These
materials are typically grouped in similarities within many manuals for easy
reference. Some of the typical groupings are
• Abrasives
• Chemical Conversion Coating Materials
• Cleaning Compounds
• Corrosion-Preventive Compounds
• Lubricants
• Neutralizing Agents
• Paint Thinners
• Paints – Primers
• Paints – Topcoats
• Protective Materials
• Sealants and Sealant Accessories
• Solvents
• Tapes
These groups are further broken down with the corrosion control manuals
with Nomenclature, Specifications/Part No., National Stock Number, Unit of
Issue, and intended uses given.
Defective All defective materials received from supply shall be reported through the
Materials proper channels. Any defective HAZMAT shall not be used and reported
immediately to the HMC&M manager.
Authorized Use Materials on the Authorized Use List (AUL) have been determined safe and
List sufficient for the prevention and treatment of corrosion. Only materials on
the AUL shall be used in the prevention and treatment of corrosion. No
outside source materials shall be used.
Availability of Sufficient quantities of material shall be on hand and readily available for use
Materials and for personnel on the Corrosion Control and Emergency Reclamation Team.
Equipment Never let materials run short. This may create down time for aircraft and/or
equipment because personnel are unable to perform maintenance.

Materials, Continued
Technical All relevant technical directives (TDs) and publications shall be readily
Directives and available and in good condition for use by corrosion control and emergency
Publications reclamation personnel. Unreadable, worn, or otherwise defective TDs and/or
publications shall be replaced immediately.
Challenge True or False. Shelf life of materials can be used if the material is still good
in your judgment.
ANSWER – False. Materials have to be inspected by HAZMINCEN before

any material can be issued an extended shelf life. See page 3-57.

Personnel
Training Along with indoctrination and follow-on training, personnel in the corrosion
control and emergency reclamation shall have all associated training and be
documented in the individual’s qualification/certification record.
Emergency The emergency reclamation personnel shall be well versed in all aspects of
Reclamation the job. Proper procedures shall be strictly enforced at all times. Personnel
Personnel shall be trained and certified under the Respirator Protection Program.
Personnel may come into contact with many toxic and potentially deadly
materials on an aircraft recovery. Breathing fumes of such materials may
cause unconsciousness and death very quickly. Personnel shall be screened
for maturity and professional knowledge before consideration to fill such a
billet. The workcenter supervisor shall ensure sufficient numbers of
personnel are qualified and assigned to such billets as to support the
maintenance activity commitments.
HAZMAT All personnel assigned to a corrosion control and Emergency Reclamation

Procedures Team shall be well versed in the proper procedures involving HAZMAT
disposal, storage and use. MSDSs shall be readily available for quick use
within each shop. MSDSs shall also be readily available on aircraft recovery
missions.

Lesson 3 Exercise

Item 1 The purpose of the Corrosion Prevention and Control Program is to establish
aircraft, engines, components, and SE, and provides direction for
a. tool control.
b. emergency reclamation.
c. HAZMAT storage.
d. aircraft breakdowns.
Item 2 Which of the following references presents factors that must be considered for
the protection of aircraft during periods of inactivity or shipment?
a. NAVAIR 16-1-540, Avionics Cleaning and Corrosion Prevention

Manual
b. NAVAIR 17-1-125, Support Equipment Cleaning, Preservation and
Corrosion Control
c. NAVAIR 15-01-500, Preservation of Naval Aircraft
d. OPNAVINST 8000.16, The Naval Ordnance Maintenance Management
Program (NOMMP)
Item 3 As workcenter supervisor, you must ensure all those with corrosion
prevention and control/emergency reclamation responsibilities comply with
the _______ Program.
a. Navy Oil Analysis

b. Hydraulic Contamination
c. Aviation Breathing Oxygen Surveillance
d. Respirator Protection

Item 4 Through Matching: For items 4 through 8, match the form of corrosion in column 1
Item 8 with its definition in column 2.
Column 1 Column 2
Form of Corrosion Definition
___4. Uniform Surface Corrosion a. Grains of a metal are lifted up by the

___5. Intergranular Corrosion force of expanding corrosion
___6. Exfoliation Corrosion products
___7. Fatigue Corrosion b. First noticeable as a white or gray
___8. Pitting Corrosion powdery deposit, similar to dust,
which blotches the surface
c. An attack on the grain boundaries of
the metal
d. Direct chemical attack on a metal
surface and involves only the metal
surface
e. Cyclic stresses on metal in corrosive
static loads that cause stress-
corrosion cracking
Item 9 There are many materials used in the corrosion control program. These
materials include brushes, tape, corrosion compounds, and
a. white out.
b. liquids.
c. sand papers.
d. detergent.


1 b 3-45
2 c 3-47
3 d 3-49
4 d 3-51
5 c 3-51
6 a 3-52
7 e 3-53
8 b 3-51
9 c 3-58
Lesson In this lesson, you learned how to manage/monitor the Corrosion Prevention
Summary and Control Program within your workcenter. In the next, lesson you will
learn about the Support Equipment Operator Training & Licensing Program.


LESSON 4
SUPPORT EQUIPMENT OPERATOR TRAINING AND
LICENSING PROGRAM
Introduction
Scope Proper operation of support equipment (SE) is the key to safe, efficient
aircraft and equipment maintenance. Improper use of SE can result in
excessive ground handling mishaps, millions of dollars spent annually in
repair and replacement fees, and reduced operational readiness. All personnel
operating SE must be fully knowledgeable of operational characteristics,
safety precautions, and emergency procedures. The command being involved
in these matters will significantly reduce the potential for personal injury and
equipment damage.
• Guidance needed as a workcenter supervisor to monitor the Support

Equipment Operator Training and Licensing Program within an aviation
• Proper procedures for managing a Support Equipment Operator Training

and Licensing Program within your workcenter.

Objectives
• Identify the purpose of the Support Equipment Operator Training and
Licensing Program.
• Identify the references used to manage the Support Equipment Operator

Training and Licensing Program.
• Identify the responsibilities of the workcenter supervisor in the Support

Equipment Operator Training and Licensing Program.
• Identify the two phases of support equipment training.

Topic See Page

Introduction 3-65
Purpose 3-67
References 3-68
Operation and Use of Support Equipment 3-73
Licensing 3-75

Purpose
Introduction The purpose of the Support Equipment Operator Training and Licensing
Program is to establish policies, responsibilities, and requirements for SE
training and licensing.
Scope The provisions of the Support Equipment Operator Training and Licensing
Program apply to all Naval and Marine Corps activities that license personnel
and operate and maintain support equipment.

References
Required Listed below are required references needed to manage a Support Equipment
References Operator Training and Licensing Program within your workcenter:
• OPNAVINST 1540.2E, Naval Aviation Maintenance Training

(NAMTRA) Program Administration Operation
• NAVAIR 00-80T-96, Basic Handling & Safety Manual, US Navy
Support Equipment Common
• NAVAIR 00-80T-119, Weight Handling Support Equipment Manual
• DOD 4145.19-R-1, Storage and Materials Handling

new equipment. Always check for the most current use of reference
materials.
OPNAVINST The Naval Aviation Maintenance Training (NAMTRA) Administration

1540.2E, Naval Operation Program provides specialized aviation technical training for
Aviation aviation maintenance personnel learning specific aircraft weapon systems and
Maintenance related equipment, and other training as directed by the Chief of Naval
Training Operations.
Program
Administration
Operation
NAVAIR 00- This manual applies primarily to the training of active duty and reserve Navy
80T-96, Basic and Marine Corps aviation maintenance personnel, and other activities or
Handling & personnel as directed by the Chief of Naval Operations (CNO). This manual
Safety Manual, does not govern other specialized training provided by Fleet Aviation
US Navy Specialized Operational Training Groups (FASOTRAGRU) or Naval
Support
Aeronautical Engineering Services Units (NAESU).
Equipment
Common

NAVAIR 00- This manual presents information to reduce personnel injuries, aircraft and
80T-96, Basic equipment damage, loss of operational readiness, and loss of dollars resulting
Handling & from ground accidents, particularly those involving ground support
Safety Manual, equipment (SE). This manual so provides SE operators with basic
US Navy information required for the safe and professional use of SE in the hazardous
Support
work environment of naval aviation.
Equipment
Common,
continued Although the depth of coverage is considered thorough, the scope is
necessarily limited. Only those types of common support equipment (CSE),
generally used by various ratings, during the performance of aircraft handling,
servicing, and organizational maintenance are covered. Within each type of
SE, not all models are discussed, only one or two.
NAVAIR 00- This manual presents requirements for management of cranes and other
80T-119, weight handling equipment (WHE) under the technical cognizance of
Weight Commander, Naval Air Systems Command (COMNAVAIRSYSCOM). This
Handling manual provides well maintained, safe and reliable WHE, and ensures
Support optimum equipment service life. This manual also identifies administrative
Equipment
Manual
and technical requirements for personnel responsible for operation,
maintenance, and management of Naval Air Systems Command (NAVAIR)
WHE. Contents include the criteria for WHE licensing, maintenance, and
certification. Descriptions, test specifications, and other guidance are also
provided where appropriate.
DOD 4145.19- This regulation establishes uniform storage and material handling policies,
R-1, Storage procedures, and responsibilities for use by Department of Defense supply
and Materials installations/activities involved in the receipt, storage, issue and care of
Handling military supplies and equipment, except for preservation-packing and
operation, defense property disposal storage facilities, and maintenance of
bulk petroleum fuel handling facilities.

OPNAVINST The Naval Aviation Safety Program enhances operational readiness when it
3750.6R, Naval preserves the lives and enhances the well being of its members by protecting
Aviation Safety the equipment and material needed to accomplish their mission. The Naval
Program Aviation Safety Program supports every aspect of naval aviation. Knowledge
gained may assist other safety efforts. This program may yield benefits and
preserve resources far beyond its intended scope.
Challenge True or False. The NAVAIR 00-80T-96, Basic Handling & Safety Manual
covers all SE.
ANSWER – False. Only those types of CSE, in most general use by various
ratings during performance of aircraft handling, servicing, and organizational
maintenance, are covered. See page 3-69.

following information pertains specifically to the Support Equipment
Operator Training and Licensing Program within the NAMP.
Responsibilities Listed below are the minimum responsibilities for managing the Support
of the Equipment Operator Training and Licensing Program as per the Naval
Workcenter Aviation Maintenance Program (NAMP).
Supervisor
• Ensure the Support Equipment Operator Training and Licensing Program
indoctrination and follow-on training is provided to personnel.
• Ensure training includes personnel responsibilities and ensure training is

• Ensure only qualified and licensed personnel use and/or operate the
support equipment.
• Ensure an adequate number of personnel are trained and licensed to

operate each type of equipment required.
• Ensure all personnel operating SE have valid licenses or are in Phase II SE

training under direct supervision of licensed personnel.
• Ensure the SE License Certification Phase I and Phase II SE training

documentation is filed in the individual's qualification/certification record.

Support Equipment Operator Training and Licensing Program. Follow-on
training shall be provided as required.

• All licensing procedures
• Proper use of all SE
• Consequences of improper use
• Safety using and around SE
Reference References involving the Support Equipment Operator Training and

Publications Licensing Program are too numerous for your Marines to truly understand in
depth. Therefore, as in all other indoctrination, it should be tailored to
familiarize your Marines in this program and not make them experts.

Operation and Use of Support Equipment
Introduction As workcenter supervisor, it is your responsibility to ensure only qualified

and licensed personnel use and/or operate any support equipment (SE).
Drastic consequences may result if strict adherence to policy is not followed.
Operation of Phase II qualification is a prerequisite to the operation or use of any SE. All
SE Without personnel operating SE must have valid licenses or are in Phase II SE training
Phase II under direct supervision of licensed personnel. There are no exceptions.
Qualification
Moving/Towing Special caution must be taken while towing and/or moving SE located in the
of SE And vicinity of aircraft and other equipment. Aircraft and equipment being moved
Aircraft can be seriously damaged due to carelessness or inattention. Damage may
vary from minor damage to rendering a piece of equipment or aircraft
uselessness.
Towing of aircraft is of special concern. Aircraft such as helicopters given to

inexperienced drivers causes maneuverability problems because of the length
of the aircraft and rotor blades. Ensure all aircraft is verified through
maintenance control. If maintenance is being done on an aircraft such as
floorboard removal on helicopters, the aircraft will not be allowed to move
until the floorboards are reinstalled. Moving the aircraft will cause the
airframe to shift and holes not to line up for reinstallation of the floorboards.
All aircraft must be cleared of any personnel that may be performing
maintenance prior to towing.

Operation and Use of Support Equipment, Continued
Before/After All SE being checked out for use must be inspected before and after use.
Inspection of Using SE that has not been properly inspected may cause damage to the SE
SE and/or aircraft and other equipment. Not checking the oil level on a tow
tractor may seize the engine and render it useless until the engine can be
replaced. In some cases, this may be the only tow tractor available for use.
This has now caused a serious operational problem squadron wide. How are
you going to move the aircraft? How are you going to move SE needed to
perform maintenance? Not finding faulty brakes on a tow tractor may lead to
a crash into other equipment, buildings, and/or aircraft rendering them
useless. In a heavy operational commitment, this may cause serious
consequences.
Never take for granted that just because a piece of SE was just used, it is good
to go. Never take someone’s word for it. Inspect it yourself! Also, always
perform a post inspection to ensure the SE is ready for use by other personnel.
This system of double checks will ensure all SE is safe and ready for use for
all personnel and catch discrepancies before they become a serious safety
and/or operational problem.
Reporting of It is the responsibility of all personnel regardless of rank, position, or

Reckless qualifications to report any reckless operation and misuse/abuse of SE to the
Operation and division officer. This type of behavior is unacceptable and may damage or
Misuse/Abuse render SE inoperable. This will cause operational down time and safety
issues to personnel and equipment if the SE fails during operation because of
damage as a result of prior misuse/abuse.
Challenge True or False. As long as Phase I training is complete, any SE can be

operated.
ANSWER – False. Phase II qualification is a prerequisite to the operation or

use of any SE. All personnel operating SE must have valid licenses or are in
Phase II SE training under direct supervision of licensed personnel. See page
3-73.

Licensing
Introduction A USN Aviation Support Equipment Operator's License is required of all

personnel who operate SE, regardless of rate or rating. A valid U.S.
Government Motor Vehicle Operator's Identification Card (OF-346) for
motor vehicles or valid state operator's license is a prerequisite for issuing an
SE license for self-propelled SE.
Length of SE operator licenses are valid for type equipment and aircraft for 3 years,
License regardless of activity assigned. Maintenance officers of issuing activities
may, as conditions warrant, require personnel to requalify sooner than 3
years. Transfer to an activity operating the same type/model, but different
series, only requires verification of proficiency. If an activity elects to honor
valid licenses issued by other activities for permanently assigned or
temporary additional duty augment personnel, they shall have the operator
complete the Phase II practical portion of the SE License Certification prior to
using SE.
Renewing Licenses shall be renewed only after passing the Phase II written and practical
License tests. Personnel who fail either the practical or written test during license
renewal or verification of proficiency must repeat Phase I course of
instruction and Phase II training for the equipment concerned. Personnel who
either fail the practical or written portion while in testing for initial licensing
must receive additional Phase II on-the-job-training (OJT) before being
retested.

Licensing, Continued
Equipment Below is a list of SE that requires an SE license as per OPNAVINST

Requiring 4790.2H.
License
List of Equipment Requiring an SE Operator’s License
EQUIPMENT EQUIPMENT
ACU-20M AIR COMPRESSOR UNIT A/S32P-25 FIRE TRUCK
A/M26U-4 NITROGEN CART (NAN-4) A/S48M-2 MAINTENANCE PLATFORM (DIESEL)
A/M27T-3 HYDRAULIC POWER SUPPLY A/S48M-2 MAINTENANCE PLATFORM (ELECTRIC)
A/M27T-5 HYDRAULIC POWER SUPLY A/U26U-1 OXYGEN SERVICING TRAILER
A/M27T-6 HYDRAULIC TEST STAND AWG-9 COOLAND CART
A/M27T-7 HYDRAULIC POWER SUPPLY BT-400-46 PRE-HEATER
A/M32C-17 AIR CONDITIONER DA-675/MSM DUMMY LOAD BANK
A/M32C-21 AIR CONDITIONER GTC-85/GTE-85-1
A/M32M-18A TRAILER MOUNTED CC CART GTCP 100-82 GAS TURBINE
A/M32M-24 2000 LBS HANGAR DECK CRANE HALON 1211 RECYCLE/RECOVERY UNIT
A/M37M-2 FLUID PURIFIER HLU-196B/E HOIST LOADING UNIT
A/M42M LIGHT CART JG-75 TOW TRACT
A/M47A-4 JET AIRCRAFT START UNIT MEP-006A GENERATOR SET
A/M48A-5 STEAM CLEANER MEP-009A GENERATOR SET
A/M48M-4 PRESSURE WASHER MEP-105A GENERATOR SET
A/S32A-30 SE TOW TRACTOR MMG-1A MOBILE ELECTRIC POWER PLANT
A/S32A-30A TOW TRACTOR MODEL 718 HYDRAULIC CHECK AND FILL STAND
A/S32A-31 TOW TRACTOR NITROGEN CARTS/SERVICING BOTTLES
A/S32A-31A TOW TRACTOR (CILOP) NC-10 MOBILE ELECTRIC POWER PLANT
A/S32A-32 SPOTTING DOLLY NC-2A MOBILE ELECTRIC POWER PLANT
A/S32A-35 CARRIER CRASH CRANE (CVCC) NC-8AA1 MOBILE ELECTRIC POWER PLANT
A/S32A-36 AMPHIB CRASH CANE (AACC) NCPP-105 COMPRESSOR POWER PLANT
A/S32A-37 TOW TRACTOR ST-1000 REFRIGERANT RECOVERY/RECYCLE UNIT
A/S32A-42 TOW TRACTOR TA-75A/B/C TWO TRACTOR
A/S32K-1D WEAPONS LOADER TMU-27 LIQUID OXYGEN CART
A/S32M-14 AIRCRAFT MAINTENANCE CRANE TMU-70/M LIQUID OXYGEN CART
A/S32M-16 (D40-D) DE-ICER TYPE 4 LIQUID OXYGEN CART
A/S32M-17 AIRCRAFT MAINTENANCE CRANE 550 DN SCRUBBER
A/S32P-16A FIRE TRUCK 65A102-11 CORROSION CONTROL UNIT
Courses for the SE listed above are stocked by NAMTRAGRU. To request a special/replacement course, forward the
request to: COMMANDING OFFICER, NAVAL AIR MAINTENANCE TRAINING GROUP, 115 CUNNINGHAM
STREET, STE C, BLDG 0-781, PENSACOLA, FL 32508-5003. Refer to the Catalog of Naval Training Courses
(CANTRAC) NAVEDTRA 10500, Volume II for course number, description and implementation date.
Operator training courses have not been developed by NAMTRAGRU for the following equipment. Training on this
equipment may be obtained from NATEC, Public Works, or at the IMA using locally prepared courses (as appropriate).
MHAC-2AC-302-8 LIQUID COOLANT FILTERING UNIT

HM-GTC-1 HYDROMITE (DIESEL/ELECTRIC)
Training on the following equipment may be obtained from NATEC, NAVADEPOTs or at the AIMD or IMA using
NAMTRAGRU courses or locally prepared courses in conjunction with OJT, AIMD, or IMA training shall be conducted
under the supervision of a senior petty officer/senior noncommissioned officer or civilian technician who is a certified
engine test system operator and instructor.
GAS TURBINE ENGINE TEST SYSTEMS (GTETS)

A/F32T-6/6A A/F32T-11 A/E37T-17(V) A/E37T-26/26A
A/F32T-9 A/E37T-14 A/F37T-19(V) A/M37T-23
A/F32T-10 A/F37T-16A(V) A/E37T-24(V) A/M37T-24
Note: Operation of like SE installed in Naval aircraft does not require SE licensing and shall be operated per aircraft
pub.

Training Training materials are produced and distributed by NAMTRAGRU under the
Materials direction of and in cooperation with COMNAVAIRSYSCOM. Licensing
requirements are effective 90 days following availability of a new course at
an activity. SE operator courses contain course outlines, lesson guides, and
training aids as appropriate. Training on equipment not included in the
program due to limited use, non-availability, or for other reasons dictated by
unusual circumstances, will be conducted by NATEC engineers, public works
departments, NAVAVNDEPOTs, or at IMAs using locally prepared courses.
Recommended Recommendations concerning any aspect of SE training programs should be

Changes forwarded via the chain of command to Chief of Naval Operations (CNO)
with a copy to Commander, Naval Air Systems Command
(COMNAVAIRSYSCOM).

Example of SE Below is an example of an SE training request. Local requests may differ

Training from the example below.
Request

Two-Phase The two-phase operator training program is designed to provide

Training
• Training in the operation and O-level maintenance of SE (Phase I)
• Training and qualification of O-level and I-level personnel in the proper
operation of SE for the particular aircraft/equipment maintenance
functions for which they will use the SE (Phase II)
Phase I Phase I SE training is conducted at the local IMA, using training materials
furnished/prepared by NAMTRAGRU. Phase I instructors must trained and
capable in the proper techniques on instruction. Instructors shall be
• Designated in writing
• E-5 or above
• Licensed on all SE for which designated to provide training
Training Phase I SE training does not qualify the student for an SE license. Phase II
SE training on the specific type/model/series (T/M/S) aircraft/maintenance
tasks the individual will perform with the SE is required before licensing and
is the responsibility of the activity issuing the license.
Schedules of Phase I SE training shall be published (minimum of 30 days in

advance), identifying course, location, and time of instruction.
Completion Upon completion of Phase I SE training, the Phase I Section of the SE

License Certification shall be signed and forwarded to the individual's
permanent activity.
Activities providing Phase I SE training shall document training in the Phase I

Section of the SE License Certification.
Equipment If an equipment change or a course update/revision affects equipment

Change or operation procedures or requirements, the activity providing Phase I SE
Course Update training shall notify supported activities.

Phase I Below are the specifications for a Phase I Operator Training Outline if not
Operator provided or developed by NAMTRAGRU.
Training
Outline

Phase I
Operator
Training
Outline,
continued

Phase II Phase II SE training consists of required reading, OJT, and practical and
written tests. These requirements ensure individuals become qualified to
operate SE on specific T/M/S aircraft or maintenance tasks. This training
must be accomplished prior to certification for T/M/S aircraft handling,
servicing, or testing operations. Phase II SE training is required before
licensing, and is the responsibility of the activity issuing the license.
Phase II SE training is required for each item of SE for which the individual
is licensed. Model variations for the same type of equipment and material
taught in the same course of instruction, is sufficient to license an individual
on all models, for example, TA-75A/B/C tow tractors, Phase II SE training.
Training, examination, and certification shall be documented on the Phase II
Section of the SE License Certification shown on the following pages.
Written Exams Wing SE training and licensing program managers, coordinate the
development of Phase II SE training written exams, to cover equipment
operating procedures, safety precautions, emergency procedures, and on-
aircraft interface/operations. Specific Phase II SE training requirements for
WHE are in NAVAIR 00-80T-119. Marine Aircraft Wing (MAWs) will
coordinate written examination development with Marine Corps aircraft
model managers.

Certification Below is an example of an SE license certification.

Example

Certification
Example,
continued

State Driver Many states allow extensions for military personnel who are out of state.
License Restrictions on these extensions also exist and vary from state to state. Below
Extension is an example of state laws and allowable extensions. Always check for the
Policies most current policy for the state of issue for your license.

State Driver
Extension
Policies,
continued
Expired, An expired, revoked, or suspended state license or U.S. Government Motor

Revoked, or Vehicle Operator’s Identification Card (OF-346) will cancel authorization to
Suspended operate self-propelled SE.

List of SE The USN Aviation Support Equipment Operator’s License shall only list the
Equipment equipment the individual has been trained and certified to operate.
Revocation If a USN Aviation Support Equipment Operator’s License is revoked for an

item of SE, the individual must pass the written and practical tests required
for a first time licensee to requalify on that item. Some of the reasons that
may result in revocation of an SE license includes, but is not limited to
• Misuses or abuses of SE
• Displaying unsafe operator habits or behavioral traits
• Involvement in an accident or incident resulting in negligence determined
by an investigation
• Cited for significant or recurring safety infractions
• Loses on-base driving privileges or the U.S. Government Motor Vehicle
Operator's Identification Card (OF-346) or state driver's license becomes
invalid for any reason (This applies to self-propelled equipment only.)
Suspension A SE license will be suspended after an operator is involved in an

accident/incident until an investigation is complete and responsibility is
determined. The license will be reinstated if the operator is deemed "not at
fault."

Front of a SE Below is an example of an SE license.

License

Back of a SE
License

Personnel Licensed personnel are responsible for maintaining qualifications as SE

Responsibilities operators and operate SE in a safe and mature manner to include
• Performance in preoperational inspections

• Operating equipment within designed capacities and capabilities
• Observing all equipment safety features and practices
Challenge True or False. Phase I instructors must be trained and capable in the proper
techniques on instruction. Instructors shall be E4 and above.
ANSWER – False. Instructors shall be E5 and above. See page 3-79.

Lesson 4 Exercise

Item 1 The purpose of the Support Equipment Operator Training and Licensing
training and
a. classes.
b. licensing.
c. breakage.
d. lubrication.
Item 2 Which of the following references is used to reduce personnel injuries,

aircraft, and equipment damage, loss of operational readiness, and loss of
dollars resulting from ground accidents?
a. NAVAIR 00-80T-96, Basic Handling & Safety Manual, US Navy

b. OPNAVINST 1540.2E, Naval Aviation Maintenance Training
c. OPNAVINST 3750.6R, Naval Aviation Safety Program
d. NAVAIR 00-80T-119, Weight Handling Support Equipment Manual
Item 3 Workcenter supervisors are responsible for ensuring all personnel operating
SE must have valid licenses or are in Phase II SE training under direct
supervision of
a. maintenance control.
b. licensed personnel.
c. quality assurance.
d. GSE personnel.

Item 4 Matching: For items 4 through 5, match the phase in column 1 with its
purpose in column 2. Place your responses in the spaces provided.
Column 1 Column 2
Phase Purpose
____4. I a. Provide training in the operation

____5. II and O-level maintenance of SE.
b. Provide training and qualification
of O-level and I-level personnel in
the proper operation of SE for the
particular aircraft/equipment
maintenance functions for which
they will use the SE.


1 b 3-67
2 a 3-69
3 b 3-73
4 a 3-79
5 b 3-79
Lesson In this lesson, you learned how to manage/monitor the Support Equipment
Summary Operator Training and Licensing Program within your workcenter.


APPENDIX A
Acronyms and Abbreviations
2M - Miniature/Microminiature
3M - Maintenance and Material Management
A/C - Aircraft
A/R - Arrests/RAST
AAE - Aircraft Armament Equipment
ABDR - Aircraft Battle Damage Repair
ABO - Aviators Breathing Oxygen
ACC - Aircraft Controlling Custodian
ACCUM - Accumulated
ACO - Administrative Contracting Officer
ACOMTRAK - Aircraft Composition Tracking (System)
ACP - Assets Capitalization Program
ACT - Actual
AD - Aviation Machinist's Mate
ADB - Aircraft Discrepancy Book
ADJ - Adjustment
ADP - Automated Data Processing
ADR - Aircraft Discrepancy Report
AE - Age Exploration or Aviation Electrician's Mate
AEMS - Aircraft Engine Management System
AEP - Armament Equipment Pool
AESR - Aeronautical Equipment Service Record
AFB - Air Force Base or Airframe Bulletin
AFC - Airframe Change
AFM - Aviation Fleet Maintenance
AIG - Address Indicator Group
AIMD - Aircraft Intermediate Maintenance Department
AIR - Aircraft Inventory Record
AIRS - Aircraft Inventory Reporting System
ALSP - Aviation Logistics Support Plan
ALSS - Aviation Life Support System(s)
AM - Amendment or Aviation Structural Mechanic
AMARC - Aerospace Maintenance and Regeneration Center
AMCM - Airborne Mine Countermeasures
AMD - Activity Manning Document
AME - Aviation Structural Mechanic Egress
AMMRL - Aircraft Maintenance Material Readiness List
AMMT - Aviation Maintenance Management Team
MCI Course 6002 A-1 Appendix A

Acronyms and Abbreviations, Continued
AMO - Assistant Maintenance Officer

AMSU - Aeronautical Material Screening Unit
AMT - Aviation Maintenance Training
AMTCS - Aviation Maintenance Training Continuum System
AO - Aviation Ordnanceman
AOL - All Operator Letters
APA - Appropriation Purchase Account
APL - Allowance Parts List
APML - Assistant Program Manager for Logistics
APU - Auxiliary Power Unit
ARR - Allowance Requirements Register
AS - Aviation Support Equipment Technician
ASB - Alert Service Bulletin
ASD - Aviation Supply Department or Aviation Support Division
ASDTP - Aviation Supply Desk Top Procedures (Marine Corps)
ASM - Aviation Maintenance Training Continuum System - Software Modules
ASN (FM&C) - Assistant Secretary of the Navy (Financial Management and
Comptroller)
ASN (I&E) - Assistant Secretary of the Navy (Installation and Environment)
ASPA - Aircraft Service Period Adjustment
ASR - Assembly Service Record
ASW - Antisubmarine Warfare
AT - Action Taken (code) or Aviation Electronics Technician
ATAC - Advanced Traceability and Control
ATCM - Aeronautical Time Cycle Management
ATDR - Aeronautical Technical Directive Requirements
ATE - Automatic Test Equipment
ATL - Aircraft Transfer Letter
ATO - Aircraft Transfer Order
AUL - Authorized Use List
AUOL - Age Unfilled Order Listing
AUTODIN - Automatic Digital Network
AVC - Avionics Change
AVCAL - Aviation Consolidated Allowance List
AVDLR - Aviation Depot Level Repairable
AVG - Average
AVGFE - Aviation Gas Free Engineer
AVNSUPO - Aviation Supply Officer
AVO - Avionics Officer

AWM - Awaiting Maintenance

AWP - Awaiting Parts
AWSE - Armament Weapons Support Equipment
BA - Broad Arrow
BB - Building Block
BCM - Beyond Capability of Maintenance
BFIMA - Battle Force Intermediate Maintenance Activity
BOSS - Buy Our Spares Smart
BU/SERNO - Bureau/Serial Number
BUNO - Bureau Number
BUPERS - Bureau of Naval Personnel
C/CANX - Cancelled
CAD - Cartridge Actuated Device or Computer Aided Design
CAGE - Commercial and Government Entity
CANTRAC - Catalog of Navy Training Courses
CAO - Contract Administration Office
CART - Cartridge
CASS - Consolidated Automated Support System
CAT - Catapult or Category
CAT I QDR - Category I Quality Deficiency Report
CAT I TPDR - Category I Technical Publications Deficiency Report
CAT II QDR - Category II Quality Deficiency Report
CAT II TPDR - Category II Technical Publications Deficiency Report
CATS - Catapults
CBT - Computer Based Training
CC - Card Column, Correction Code, Capability Code, or MAF Canceled
CCB - Configuration Control Board
CCS - Component Control Section
CD-ROM - Compact Disc-Read Only Memory
CDA - Central Design Activity
CDI - Collateral Duty Inspector
CDQAR - Collateral Duty Quality Assurance Representative
CEB - Commercial Engine Bulletin
CERR - Complete Engine Repair Requirements
CERRC - Complete Engine Repair Requirements Card
CESE - Civil Engineering Support Equipment
CETS - Contractor Engineering and Technical Services
CF REQ - Check Flight Required
CFE - Contractor Furnished Equipment
CG MCCDC - Commanding General, Marine Corps Combat Development Command

CGMARBDE - Commanding General, Marine Brigade

CGMAW - Commanding General, Marine Aircraft Wing
CHRIMP - Consolidated HAZMAT Reutilization and Inventory Management Program
CM - Configuration Management
CMC - Commandant of the Marine Corps
CMD - Consumable Management Division
CMS - Communications Material Systems or Consumable Material Section
CNATRA - Chief of Naval Air Training
CNET - Chief of Naval Education and Training
CNO - Chief of Naval Operations
CO - Commanding Officer
CODR - Conventional Ordnance Deficiency Report
COG - Cognizance Symbol
COMFAIR - Commander Fleet Air
COMFAIRWESTPAC - Commander Fleet Air, Western Pacific
COMMARFORLANT/PAC - Commander, Marine Forces Atlantic/Pacific
COMNAVAIRESFOR - Commander, Naval Air Reserve Force
COMNAVAIRLANT - Commander, Naval Air Force, U.S. Atlantic Fleet
COMNAVAIRPAC - Commander, Naval Air Force, U.S. Pacific Fleet
COMNAVAIRSYSCOM - Commander, Naval Air Systems Command
COMNAVFACENGCOM - Commander, Naval Facilities Engineering Command
COMNAVSEASYSCOM - Commander, Naval Sea Systems Command
COMNAVSUPSYSCOM - Commander, Naval Supply Systems Command
COMSPAWARSYSCOM - Commander, Space and Naval Warfare Systems Command
CONUS - Continental United States
COR - Contracting Officer Representative
COSAL - Consolidated Shipboard Allowance List
CP - Change Proposal
CPO - Civilian Personnel Office/Officer
CPR - Cardiopulmonary Resuscitation
CPT - Copilot Time
CR - Correction Record
CRIPL - Consolidated Remain-In-Place List
CSE - Common Support Equipment
CSEC - Computerized Self Evaluation Checklist
CSL - Commercial Service Letter
CTPL - Central Technical Publications Library
CTR - Carcass Tracking Record
CV - Aircraft Carrier
CVN - Multi-Purpose Aircraft Carrier, Nuclear

CVW - Carrier Air Wing

D-Level - Depot Level
DAAS - Defense Automatic Addressing System
DAR - Daily Audit Report
DBA - Data Base Administrator
DCB - Dynamic Component Bulletin
DCF - Document Control Form
DCMC - Defense Contract Management Command
DCNO - Deputy Chief of Naval Operations
DCNO (M&P) - Deputy Chief of Naval Operations (Manpower and Personnel)
DCU - Document Control Unit
DDSN - Document Date and Serial Number
DFAS - Defense Finance and Accounting Service
DIFM - Due In From Maintenance
DISCD - Discovered
DLA - Defense Logistics Agency
DLQP - Depot Level Quality Program
DLR - Depot Level Repairable
DMDS - Depot Maintenance Data System
DMI - Depot Maintenance Interservice or Direct Material Inventory
DMISA - Depot Maintenance Interservice Support Agreement
DNEC - Distribution Navy Enlisted Classification (codes)
DOCNUM - Document Number
DOD - Department of Defense
DOD-HDBK - Department of Defense Handbook
DODIC - Department of Defense Identification Code
DON - Department of the Navy
DPD - Data Processing Division
DR - Deletion Record
DRMO - Defense Reutilization Management Office
DRP - Designated Rework Point
DSF - Data Services Facility
DSN - Defense Switched Network
DSP - Designated Support Point
DTEDEP - Julian Date Depart
DTG - Date Time Group
DTO - Direct Turn Over
E&E - Examination and Evaluation or Examiner and Evaluator
EAH - Equipment Assigned Hours
ECM - Electronic Countermeasures

ECOMTRAK - Engine Composition Tracking (System)

ECP - Engineering Change Proposal
EDVR - Enlisted Distribution and Verification Report
EEO - Equal Employment Opportunity
EHR - Equipment History Record
EI - Engineering Investigation
EIC - Equipment Identification Code
EIS - Equipment In Service
ELCF - Equivalent Low Cycle Fatigue
EMD - Engineering and Manufacturing Development
EMR - Explosive Mishap Report or Equipment Master Roster
EMT - Elapsed Maintenance Time
EOC - Equipment Operational Capability
EOQ - End of Quarter
EOS - Equipment Out of Service
EOT - Equipment Operating Time
EQUIP - Equipment
ESC - Executive Steering Committee
ESD - Electrostatic Discharge
ESDS - Electrostatic Discharge Sensitive
ETR - Engine Transaction Report
ETS - Engineering and Technical Services
EXCD - Exception Code
EXREP - Expeditious Repair
FA - Fixed Allowance
FAA - Federal Aviation Administration
FAD - Force Activity Designator
FAILSAFE - Fleet Air Introduction Liaison Survival Aircrew Flight Equipment
FAR - Federal Acquisition Regulation or Federal Aviation Regulation
FASOTRAGRU - Fleet Aviation Specialized Operational Training Group
FCA - Field Calibration Activity
FCF - Functional Check Flight
FE - Fleet Equipment
FEA - Front End Analysis
FEDLOG - Federal Logistics Data
FH - Flight Hours
FID - Fault Isolation Detection
FISC - Fleet Industrial Supply Center
FLEMATSUPPO - Fleet Material Support Office
FLR - Field Level Repairable

FMC - Full Mission Capable

FMCM - Full Mission Capable Maintenance
FMCS - Full Mission Capable Supply
FMF - Fleet Marine Force
FMS - Foreign Military Sales
FOD - Foreign Object Damage
FOM - Facilitate Other Maintenance
FOSSAC - Fitting Out and Supply Support Assistance Center
FR - Force Revision
FRAG - Fleet Readiness Action Group
FREST - Fleet Replacement Enlisted Skills Training
FRS - Fleet Readiness Squadron
FS - Fleet Support
FSC - Federal Supply Classification
FSCM - Federal Supply Code for Manufacturers (See CAGE)
FST - Fleet Support Team
FTS - Federal Telephone Service or Field Team Support
G&C - Guidance and Control
GAI - General Aircraft Information
GBL - Government Bill of Lading
GFE - Government Furnished Equipment
GMT - General Military Training
GSA - General Services Administration
HAZMAT - Hazardous Material
HAZMINCEN - Hazardous Waste Minimization Center
HAZWASTE - Hazardous Waste
HCN - Hard Copy Notice
HM - Helicopter Mine Countermeasures
HMC&M - Hazardous Material Control and Management
HMIS - Hazardous Material Information System
HMR - Hazardous Material Report
HRS - Hours
HSU - Hydraulic Servicing Unit
HTS - Hybrid Test Station or Hydraulic Test Stand
I-Level - Intermediate Level
IAFC - Interim Airframe Change
IAVC - Interim Avionics Change
ICAPS - Increased Capabilities
ICP - Inventory Control Point
ICRL - Individual Component Repair List

ILS - Integrated Logistic Support

ILSP - Integrated Logistic Support Plan/Program
IMA - Intermediate Maintenance Activity
IMC - Integrated Maintenance Concept
IMR - Individual Master Roster
IMRL - Individual Material Readiness List
INC - Incorporated
INFO - Information
INT - Interim
IOU - I Owe You
IP - Items Processed
IPB - Illustrated Parts Breakdown
IPI - Items Processed Intermediate
IPO - Items Processed Organizational
IPS - Integrated Program Summary
IPT - Integrated Program Team
IRAC - Interim Rapid Action Change
IRIL - Issue/Receipt/Inventory and Location
IRIM - Intensive Repairable Item Management
ISE - In-Service Engineering
ISEA - In-Service Engineering Activity
ISEL - In-Service Engineering Logistics
ITEMS/P - Items Processed
ITSS - Individual Training Standards System
JASMMM - Joint Aviation Supply and Maintenance Material Management
JC - Job Complete
JCN - Job Control Number
JCNORG - Job Control Number Organization
JDMAG - Joint Depot Maintenance Analysis Group
JOAP - Joint Oil Analysis Program
JPCG - Joint Policy Coordinating Group
JPCG-DMI - Joint Policy Coordinating Group Depot Maintenance Interservice (Program)
JRB - Joint Reserve Base
JS - Job Status
KIN - Kit Identification Number
LAMPS - Light Airborne Multipurpose System (Helicopter)
LAMS - Local Asset Management System
LAN - Local Area Network
LANT/PAC - Atlantic/Pacific
LCF - Low Cycle Fatigue

LCPO - Leading Chief Petty Officer

LECP - Logistics Engineering Change Proposal
LEM - Logistics Element Manager
LES - Local Engineering Specification
LHA - Landing Ship, Helicopter Assault
LHD - Multi-Purpose Amphibious Assault Ship
LIR - Logbook and Inventory Record
LM - Logistics Manager
LMTC - Lead Maintenance Technology Center
LOX - Liquid Oxygen
LPD - Landing Platform Dock
LPS - Local Process Specification
LRA - Last Rework Activity
LRCA - Local Repair Cycle Asset
LUI - Life Usage Index
M - Maintenance (Job Status)
MACG - Marine Air Control Group
MAF - Maintenance Action Form
MAG - Marine Aircraft Group
MAGTF - Marine Air Ground Task Force
MAINT/L - Maintenance Level
MAIR - Master Aircraft Inventory Record
MAL - Malfunction (Description Code)
MALS - Marine Aviation Logistics Squadron
MALSP - Marine Aviation Logistics Support Program
MAM - Maintenance Assist Module
MATMEP - Maintenance Training Management and Evaluation Program
MAW - Marine Aircraft Wing
MC - Mission Capable or Meter Code
MCAPP - Modification, Corrosion, and Paint Program
MCAS - Marine Corps Air Station
MCC - Material Control Code
MCN - Maintenance Action Form Control Number
MCO - Marine Corps Order
MCRC - Master Component Rework Control
MCRS - Material Condition Reporting Status
MCS - Mine Countermeasures Ship
MDA - Milestone Decision Authority
MDBA/A - Maintenance Data Base Administrator/Analyst
MDPS - Maintenance Data Processing System

MDR - Master Data Record or Maintenance Data Report/Reporting

MDS - Maintenance Data System
MDU - Material Delivery Unit
MEASURE - Metrology Automated System for Uniform Recall and Reporting
MER - Multiple Ejector Rack
MESM - Mission-Essential Subsystem Matrices
METCAL - Metrology and Calibration
METER - Metrology Equipment Recall
MF - Mobile Facility
MFGR - Manufacturer
MFRD - Manufactured
MHE - Material Handling Equipment
MHRS - Man-Hours
MHRSO - Man-Hours Organizational
MIL-HDBK - Military Standardization Handbook
MIL-STD - Military Standard
MILCON - Military Construction
MILSPEC - Military Specification
MILSTRAP - Military Standard Transaction Reporting and Accounting Procedure
MILSTRIP - Military Standard Requisitioning and Issue Procedure
MIM - Maintenance Instructions Manual
MIP - Maintenance Improvement Program or Material Improvement Plan
MIS - Management Information System
MMCO - Maintenance Material Control Officer
MMF - Mobile Maintenance Facility
MMP - Monthly Maintenance Plan
MNS - Mission Need Statement
MO - Maintenance Officer
MOCC - MEASURE Operational Control Center
MOD - Modification
MOS - Military Occupational Specialty
MOV - Material Obligation Validation
MP&T - Manpower, Personnel, and Training
MR - Material Report/Reporting
MRB - Material Review Board
MRC - Maintenance Requirements Card
MRIL - Master Repairable Item List
MSD - Measurement Science Directorate
MSDS - Material Safety Data Sheet
MSL - Master Salvage List

MSR - Module Service Record

MTIP - Maintenance Training Improvement Program
MTL - Master Task List
MTR - Mandatory Turn-in Repairable or Module Test and Repair
MTRR - Maintenance Training Requirements Review
MTU - Maintenance Training Unit
MWSG - Marine Wing Support Group
MWSS - Marine Wing Support Squadron
NA - Not Applicable
NADEP - Naval Aviation Depot
NAF - Naval Air Facility
NALC - Navy Ammunition Logistic Code
NALCOMIS - Naval Aviation Logistics Command Management Information System
NALDA - Naval Aviation Logistics Data Analysis
NAMDRP - Naval Aviation Maintenance Discrepancy Reporting Program
NAMP - Naval Aviation Maintenance Program
NAMPSOP - Naval Aviation Maintenance Program Standard Operating Procedures
NAMTRAGRU - Naval Air Maintenance Training Group
NAMTRAGRUDET - Naval Air Maintenance Training Group Detachment
NAR - Notice of Ammunition Reclassification
NAS - Naval Air Station
NASA - National Aeronautics and Space Administration
NATEC - Naval Air Technical Data and Engineering Service Command
NATOPS - Naval Air Training and Operating Procedures Standardization
NATTC - Naval Aviation Technical Training Center
NAVAIR FS - Naval Air Systems Command Fleet Support
NAVAIRPRA - Naval Air Pacific Repair Activity
NAVAIRWARCEN - Naval Air Warfare Center
NAVAIRWARCENACDIV - Naval Air Warfare Center Aircraft Division
NAVAIRWARCENWPNDIV - Naval Air Warfare Center Weapons Division
NAVAVNDEPOT - Naval Aviation Depot
NAVCOMTELSTA - Naval Computer and Telecommunications Station
NAVEDTRA - Naval Education and Training
NAVFLIRS - Naval Flight Record Subsystem
NAVICP - Naval Inventory Control Point
NAVMAC - Navy Manpower Analysis Center
NAVOSH - Navy Occupational Safety and Health
NAVPRO - Navy Plant Representative Office
NAVSAFECEN - Naval Safety Center
NAVSEALOGCEN - Naval Sea Logistics Center

NBNC - Noted But Not Corrected

NC - Not Carried
NCEA - Noncombat Expenditure Allowance
NCER - Noncombat Expenditure Requirements
NCO - Non-Commissioned Officer
NCOIC - Non-Commissioned Officer in Charge
NCR - No Calibration Required
NDI - Nondestructive Inspection
NDT/I - Nondestructive Testing and Inspection
NEC - Navy Enlisted Classification
NETS - Navy Engineering and Technical Services
NFO - Naval Flight Officer
NHA - Next Higher Assembly
NIF - Navy Industrial Fund
NIFMS - NAVAIR Industrial Financial Management System
NIIN - National Item Identification Number
NIMMS - NAVAIR Industrial Material Management System
NINC - Not Incorporated
NIS - Not In Stock or Not Issued (directives)
NIST - National Institute of Standards and Technology
NITRAS - Navy Integrated Training Resources and Administration System
NMC - Not Mission Capable
NMCM - Not Mission Capable Maintenance
NMCMS - Not Mission Capable Maintenance Scheduled
NMCMU - Not Mission Capable Maintenance Unscheduled
NMCS - Not Mission Capable Supply
NOAP - Navy Oil Analysis Program
NOC - Not Otherwise Coded
NOMMP - Naval Ordnance Maintenance Management Program
NOTAL - Not To All
NPA - Nonprovisioned Aircraft
NPSL - Navy Primary Standards Laboratory
NSCM - NATO Supply Code for Manufacturers
NSN - National Stock Number
NTFS - Navy Training Feedback System
NTP - Navy Training Plan
NTSP - Navy Training Systems Plan
NWADIV - Naval Warfare Assessment Division
NWAS - Naval Warfare Assessment Station
NWCF - Navy Working Capital Fund

O&MN - Operations and Maintenance, Navy

O-Level - Organizational Level
OFC - Operational Functional Category
OFFMP - Off Line For Manual Processing
OFFTR - Off For Technical Research
OFVAL - Off For Validation
OINC - Officer In Charge
OJT - On-Job-Training
OLSP - Operational Logistics Support Plan
OMA - Organizational Maintenance Activity
OMB - Office of Management and Budget
OMD - Operations Maintenance Division
OPC - Optimum Performance Capable
OPM - Office of Personnel Management
OPNAV - Office of the Chief of Naval Operations
OPSERMOS - Operating Service Months
OPTAR - Operating Target (funding)
ORD - Ordered
ORDO - Ordnance Officer
ORDSO - Ordnance Safety Officer
ORG - Organization
ORM - Operational Risk Management
OSD - Office of the Secretary of Defense
OSH - Occupational Safety and Health
OSHA - Occupational Safety and Health Administration
OSI - Operational Support Inventory
OSM - Operating Service Months
OTPS - Operational Test Program Set
OXY - Oxygen
P&E - Planner and Estimator
P/N - Part Number or Page Number
PACE - Paint and Corrosion Evaluation
PAD - Propellant Actuated Device
PAGENR - Page Number
PAR - Personnel Advancement Requirement
PCMTIP - Personal Computer Maintenance Training Improvement Program
PCO - Procurement Contracting Office/Officer
PDM - Program Decision Memorandum or Phase Depot Maintenance
PEB - Pre-Expended Bin
PED - Period End Date

PINC - Previously Incorporated

PJT - Practical Job Training
PLA - Plain Language Address
PLTS - Parts Life Tracking System
PM - Periodic Maintenance, Position Management or Preventive Maintenance
PMA - Program Manager-Air
PMC - Partial Mission Capable
PMCM - Partial Mission Capable Maintenance
PMCS - Partial Mission Capable Supply
PME - Precision Measuring Equipment
PMIC - Periodic Maintenance Information Card
PMRC - Periodic Maintenance Requirement Card
PMS - Planned Maintenance System or Preventive Maintenance Services
PMU - Program Management Unit
PN - Part Number
POC - Point of Contact
POD - Proof Of Delivery
POE - Point of Entry
POL - Petroleum, Oil, and Lubricant
POM - Program Objective Memorandum
POS - Position
POSIT - Position
PPB - Power Plant Bulletin
PPC - Power Plant Change
PPE - Personal Protective Equipment
PQS - Personnel Qualification Standards
PR - Aircrew Survival Equipmentman
PRI - Priority
PRO - Processing Time
PROBE - Program Optimization and Budget Evaluation
PROJ - Project
PSE - Peculiar Support Equipment
PSECA - Primary Support Equipment Controlling Authority
PSI - Position Sensitive Indicator
PSICP - Program Support Inventory Control Point
PSIG - Per-Square-Inch Gauge
PSP - Performance Standard Program
PSSN - Propulsion System Serial Number
PST - Product Support Team
PT - Part

PUC - Permanent Unit Code

PWS - Performance Work Statement
QA - Quality Assurance
QAR - Quality Assurance Representative
QC - Quality Control
QDEAS - Quality Deficiency Evaluation Analysis System
QDR - Quality Deficiency Report
QEC - Quick Engine Change
QECA - Quick Engine Change Assembly
QECK - Quick Engine Change Kit
QECS - Quick Engine Change Stand
QTY - Quantity
RAC - Rapid Action Change
RADCOM - Radar/Communications
RAMEC - Rapid Action Minor Engineering Change
RAST - Recovery Assist, Securing and Traversing
RCM - Reliability Centered Maintenance
RCN - Report Control Number
RCU - Repairable Control Unit or Requisition Control Unit
RECD - Received
RECTYP - Record Type
REF - Reference
REP - Repair Time
REQ/REQN - Requisition
REV - Revision
RF - Radio Frequency
RFI - Ready For Issue
RFU - Ready For Use
RIC - Routing Identifier Code
RILOP - Reclamation in Lieu of Procurement
RIP - Remain in Place
RMD - Repairable Management Division
RMS - Repairable Material Section
ROB - Receipt on Board
ROD - Report of Discrepancy
ROI - Return On Investment
RSI - Repairable Support Inventory
RSSK - Rigid Seat Survival Kit
RU - Receiving Unit
RWK - Rework

S/N - Serial Number

SA - System Administrator
SA/A - System Administrator/Analyst
SAD - Supply Accounting Division
SAFE - Structural Appraisal of Fatigue Effects
SALTS - Streamlined Automated Logistics Transmission System
SAMM - System Administrator Main Menu
SAR - Search and Rescue
SARC - System Acquisition Review Council
SARDIP - Stricken Aircraft Reclamation and Disposal Program
SAT - Short Airfield Takeoff
SB - Service Bulletin
SCC - Sequence Control Card
SCH - Scheduling Time
SCIR - Subsystem Capability and Impact Reporting
SCT - Special Crew Time
SCU - Stock Control Unit
SDLM - Standard Depot Level Maintenance
SE - Support Equipment
SEAOPDET - Sea Operational Detachment
SEATS - Survival Equipment Asset Tracking System
SEB - Support Equipment Bulletin
SEC - Support Equipment Change
SECA - Support Equipment Controlling Authority
SECDEF - Secretary of Defense
SECNAV - Secretary of the Navy
SEGTE - Support Equipment Gas Turbine Engine
SEIS - Support Equipment In Service
SEL - Support Equipment List
SER - Series
SER/SERNO - Serial Number
SERMIS - Support Equipment Resources Management Information System
SERNO - Serial Number
SERVMART/MINIMART - Service/Mini Market
SESS - Support Equipment Standardization System
SF - Standard Form
SFOEDL - Summary Filled Order/Expenditure Difference Listing
SHML - Ships Hazardous Materials List
SHORCAL - Shore Consolidated Allowance List
SHOROC - Shore Required Operational Capability

SIM - Simulated
SITSUM - Situational Summary
SLEP - Service Life Extension Program
SM&R - Source, Maintenance, and Recoverability
SMD - Ship Manning Document or Supply Management Division
SMIC - Special Material Identification Code
SMQ - Special Maintenance Qualification
SNAP - Shipboard Nontactical Automated Data Processing Program
SNCO - Staff Noncommissioned Officer
SNDL - Standard Navy Distribution List
SOW - Statement Of Work
SPAD - Supply Personnel and Administration Division
SPAWARSYSCEN - Space and Naval Warfare Systems Center
SPC - Shop Process Card or Statistical Process Control
SQMD - Squadron Manpower Document
SRA - Shop Replaceable Assembly
SRC - Scheduled Removal Component
SRD - Supply Response Division
SRS - Supply Response Section
SSD - Squadron Support Division
SSI - Structurally Significant Item
SSK - Seat Survival Kit
SSMP - Supply Support Management Plan
SSN - Social Security Number
SSRA - Sub Shop Replaceable Assembly
SSSCP - Single Supply Support Control Point
SSU - Supply Screening Unit
STASS - Standard Training Activity Support System
SUADPS - Shipboard Uniform Automated Data Processing System
SUADPS/RT - Shipboard Uniform Automated Data Processing System/Real Time
SUBJ - Subject
SUPORG - Supply Organization (code)
SVC - Service
T/M/S - Type/Model/Series
TACAN - Tactical Airborne Navigation
TAD - Temporary Additional Duty
TAMPS - Tactical Aviation Mission Planning System
TAMS - Test and Monitoring System
TAT - Turnaround Time
TBA - Table of Basic Allowance

TCC - Target Capability Code

TCD - Target Capability Date
TCM - Tool Control Manual
TCN - Transportation Control Number
TCP - Tool Control Program
TD - Technical Directive
TDC - Technical Directive Compliance
TDC BAS - Technical Directive Compliance Basic Number
TDCODE - Technical Directive Code
TDSA - Technical Directive Status Accounting
TEC - Type Equipment Code
TEI - Temporary Engineering Instruction
TEMADD - Temporary Additional Duty
TER - Triple Ejector Rack
TFBR - Technical Feedback Report
TFMMS - Total Force Manpower Management System
TFOA - Things Falling Off Aircraft
TIR - Transaction Item Report
TM - Type Maintenance (code)
TMR - Total Mission Requirements
TOT - Total Turnaround Time
TPDR - Technical Publications Deficiency Report
TPL - Technical Publications Library
TPLP - Technical Publications Library Program
TPS - Test Program Set
TQL - Total Quality Leadership
TQMC - Total Quality Management Concept
TR - Trouble Report
TRANS - Transaction
TRAWING - Training Wing
TRCODE - Transaction Code
TRU - Technical Research Unit
TSC - Tactical Support Center
TSN - Time Since New
TSO - Time Since Overhaul
TSR - Time Since Rework
TYCOM - Type Commander
UADPS - Uniform Automated Data Processing System
UAV - Unmanned Air Vehicle
UIC - Unit Identification Code

UMMIPS - Uniform Material Movement and Issue Priority System

UNCLAS - Unclassified
UNK - Unknown
UNS - Unscheduled (maintenance)
UPC - Utilization Purpose Code
USD (A) - Under Secretary of Defense for Acquisition
USN - United States Navy
VALSPECS - Validation Specifications
VAST - Versatile Avionics Shop Test
VERTREP - Vertical Replenishment
VHF - Very High Frequency
VIDS - Visual Information Display System
VIDS/MAF - Visual Information Display System/Maintenance Action Form
VRT - Voyager Repair Team
W&B - Weight and Balance
WC - Work Center
WCS - Workload Control System
WD - When Discovered (code)
WEL - Weapons Equipment List
WESTPAC - Western Pacific
WHE - Weapons Handling Equipment
WP - Work Package
WRA - Weapons Replaceable Assembly
WSE - Weapons Support Equipment
WSM - Weapon System Manager
WSP - Wholesale Stock Point
WSPD - Weapon System Planning Document
WUC - Work Unit Code
XO - Executive Officer
YYMMDD - Year, Month, and Day (for example, 971231)


APPENDIX B
Definition of Terms
ACCEPTANCE - Assumption of responsibility for, or legal title to, an aircraft from another
party. Receipt of new aircraft from a manufacturer (or of any aircraft from a non-Navy
custodian) by a representative authorized to do so by the Navy. Provisional acceptance is the
acceptance of an aircraft for which certain obligations with respect to the aircraft have not yet
been fulfilled by the contractor.
ACCEPTANCE INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE and
INSPECTIONS, SUPPORT EQUIPMENT (SE).
ACCESSORIES - See AIRFRAME ACCESSORIES and ENGINE ACCESSORIES.

ACCUMULATED WORK HOURS - Hours that are expended against a job by individuals
within the same workcenter.
ACQUISITION - A single uniform system whereby all equipment, facilities, and services are
planned, developed, acquired, maintained, and disposed of by DOD. The system includes
research, development, test and evaluation, production, procurement, and operations and support.
ACTION DATE - The Julian date on which a maintenance form is completed by a workcenter.
ACTION ORGANIZATION - The activity that actually performs the maintenance action. It is
identified by a three-character alphanumeric code.
ACTION TAKEN (AT) CODE - A one-character alphabetic or numeric code that describes what
action has been accomplished on the item identified by a WUC.
ACTIVE AIRCRAFT - Aircraft currently engaged in supporting flying missions either through
direct assignment to aircraft units or reassignment through any of the logistic processes of
supply, maintenance, or modification.
ADJUST/ALIGN/TRIM - To bring variable elements of an item within specified limit.

ADMINISTRATIVE CHAIN OF COMMAND - The chain of command as determined by the
administrative organization.
ADMINISTRATIVE COMMANDS (Type Commands) - The commands that provide the
tactical commands with the means to conduct tactical operations. Administration of training,
supply, and repair of fleet units are some of their responsibilities.
ADMINSTRATIVE CONTRACTING OFFICER (ACO) - Performs assigned functions, duties,
or responsibilities related to the administration of a contract.
MCI Course 6002 B-1 Appendix B

Definition of Terms, Continued
AERONAUTICAL ALLOWANCE LISTS - (Includes COMNAVAIRSYSCOM Allowance

Lists (except Advanced Base Lists), COMNAVAIRSYSCOM ARRs, and
COMNAVAIRSYSCOM TBAs) - Lists of equipment and material determined from known or
estimated requirements as necessary to place and maintain aeronautical activities in a material
readiness condition. In the case of aerological and photographic material, the requirement is
extended to all applicable naval activities. See ALLOWANCE EQUIPAGE LIST (AEL),
ALLOWANCE LISTS, ALLOWANCE PARTS LIST (APL), ALLOWANCE
REQUIREMENTS REGISTER (ARR), AVIATION CONSOLIDATED ALLOWANCE LIST
(AVCAL), and CONSOLIDATED SHIPBOARD ALLOWANCE LIST (COSAL).
AERONAUTICAL EQUIPMENT - The equipment used within the maintenance complex that
contributes to the completion of the maintenance mission. It includes aircraft, SE, aviators'
equipment, and other similar devices.
AERONAUTICAL EQUIPMENT SERVICE RECORD (AESR) - An insert to the basic aircraft
logbook used as a service record for various aircraft equipment, such as power plants and
propellers.
AERONAUTICAL MATERIAL - All the material used in the operation and maintenance of
aircraft.
AGE - The process of accumulating operating service months. See CALENDAR AGE,
OPERATING SERVICE AGE, and PROGRAM SERVICE LIFE.
AGE EXPLORATION (AE) - The process of determining age-reliability relationships through
controlled testing and analysis of chance or unintentional events for safety critical items; and
from operating experience for non-safety items.
AGED UNFILLED ORDER - An unfilled order submitted by an operational target holder to the
DFAS which has been held in file for over 120 days and which has not matched with a
corresponding expenditure document nor been canceled.
AIR CAPABLE SHIP - See AVIATION CAPABLE SHIP.
AIR COMMAND - See CONTROLLING CUSTODIAN.
AIR PORTABLE - Equipment that can be carried in an aircraft with only minor dismantling and
reassembly within the capabilities of user units. This term must be qualified to show the extent
of air portability.
AIRBORNE MINE COUNTERMEASURES (AMCM) - Aircraft weapons systems used to
detect, and neutralize sea mines.

AIRCRAFT - An air vehicle, designed primarily for flight in the atmosphere, which has
incorporated in its prime design the ability/requirement for human occupancy. See ACTIVE
AIRCRAFT; EXPERIMENTAL AIRCRAFT; INACTIVE AIRCRAFT; PRODUCTION
AIRCRAFT; PROGRAM AIRCRAFT; PROJECT AIRCRAFT; RESERVE AIRCRAFT;
RESERVE STOCK AIRCRAFT; SPECIAL TEST, PERMANENT AIRCRAFT; SPECIAL
TEST, TEMPORARY AIRCRAFT; SUPPORTING AIRCRAFT; and UNIT AIRCRAFT.
AIRCRAFT AIRFRAME - The structural components, including the framework and skin of
such parts as the fuselage, empennage, wings, landing gear (minus tires), and engine mounts.
AIRCRAFT BATTLE DAMAGE REPAIR (ABDR) - Maintenance actions taken during combat
conditions that may provide less than 100 percent restoration of an aircraft and its subsystems to
original strength, mission capability, or configuration. These actions are taken during wartime to
maximize the availability of mission capable aircraft, through effective use of maintenance
resources, to assess damage and affect repair to return the aircraft to service.
AIRCRAFT COMPOSITION TRACKING (ACOMTRAK) System - An automated system for
tracking the composition, location, and operating time/cycle counts of the life limited
components of aircraft. ACOMTRAK is used to develop schedules for inspections, replacement
procurements, and forced removal actions for these components based on usage requirements
and fixed or variable hour or cycle counts or limits. It provides important support to the RCM
Program.
AIRCRAFT CONTROLLING CUSTODIAN (ACC) - A term applied to air commands and

COMNAVAIRSYSCOM for exercising administrative control of assignment, employment, and
logistic support of certain aircraft and aircraft engines as specified by the CNO. The following
ACCs have been designated by CNO: COMNAVAIRLANT, COMNAVAIRPAC, CNATRA,
COMNAVAIRESFOR, and COMNAVAIRSYSCOM.
AIRCRAFT ENGINE MANAGEMENT SYSTEM (AEMS) - An automated engine

management system that provides on-line status and condition of any engine, propulsion system,
or module. ACCs and other managers to effect the most efficient distribution of engine assets
use the system extensively.
AIRCRAFT EQUIPMENT CONFIGURATION LIST - A listing of the avionics components
installed in aircraft, cross-referenced to applicable ARRs, that contain the support requirements
for outfitting purposes.
AIRCRAFT INTERMEDIATE MAINTENANCE DEPARTMENT (AIMD) - The department of
an aviation ship (CV, CVN, LHA, LHD) or NAS responsible for the check, test, repair, or
manufacture of aeronautical components and SE for the supported aircraft.

AIRCRAFT INTERMEDIATE MAINTENANCE MATERIAL READINESS LIST (AMMRL)

PROGRAM - Provides data required for effective management of selected SE at all levels of
aircraft maintenance. Within this program, SERMIS and IMRL are significant. AIRFRAME -
See AIRCRAFT AIRFRAME and MISSILE AIRFRAME.
AIRCRAFT LOADING TABLE - A data sheet used by the force unit commander containing
information on the load that actually goes into each aircraft.
AIRCRAFT LOGBOOK - A detailed service record maintained for each individual aircraft. See
AERONAUTICAL EQUIPMENT SERVICE RECORD (AESR).
AIRCRAFT SERVICE PERIOD ADJUSTMENT (ASPA) PROGRAM - A subset of RCM,
provides for inspections that determine if a 12-month (or equivalent flight hour) adjustment can
be added to the current PED of an individual airframe. Some series of aircraft are exempted
from the ASPA Program for specific cause. For these aircraft, the existing provisions for
extensions apply.
AIRCRAFT TRANSFER ORDER (ATO) - A letter or message type directive used to affect all
transfers of aircraft.
AIRFRAME ACCESSORIES - The items of equipment required for operation of the aircraft and
not considered an integral part of the airframe or engine, such as wheels, brakes, hydraulic
equipment, fuel systems, deicing equipment, anti-icing equipment, and other items regardless of
whether attached to the engine or airframe. See EQUIPMENT, DIVISION OF.
AIRTASK - A method by which COMNAVAIRSYSCOM assigns work to its field activities.
AIRWORTHINESS INSPECTION - Applicable to commercial off the shelf aircraft and
provides for a periodic standard D-level rework normally performed per the manufacturer's FAA
approved maintenance requirements. This rework includes a comprehensive inspection together
with critical defect corrosion correction and compliance with outstanding FAA airworthiness
directives and approved manufacturer's service bulletins.
ALLOCATION (PERSONNEL) - The apportionment of personnel numbers to a program or
program element of the Future Defense Plan.
ALLOWANCE (AIRCRAFT) - The quantity and kind of aircraft an organizational unit is

authorized to have. See PROGRAM OPERATING ALLOWANCE.
ALLOWANCE EQUIPAGE LIST (AEL) - Used to specify requirements for shipboard equipage
and lists of miscellaneous material requirements for mechanical, electrical, ordnance, or
electronic system(s) in operating spaces aboard ship.

ALLOWANCE LISTS - Documents used to specify authorized requirements of operational

support inventory for a squadron, IMA, or ship. The allowance is based on the activity's need for
the item to perform its mission, the level of maintenance, and frequency of use.
ALLOWANCE PARTS LIST (APL) - A listing of repair parts prepared for individual equipment
and components.
ALLOWANCE REQUIREMENTS REGISTER (ARR) - Documents used to determine
authorized requirements of spare assemblies and repair parts at I-level and O-level maintenance.
They are storeroom items under control of the Supply Department.
APPROPRIATION - An authorization, established by an Act of the Congress of the United
States, to spend funds of the U. S. Treasury or incur indebtedness for specified purposes. The
O&MN, is established for each fiscal year concerned to fund the operation and maintenance
requirements of the operating forces. The appropriation is only available for citation on
requisitions for the fiscal year established and for the recording of related expenditures for the
following two years.
ARMAMENT SUPPORT EQUIPMENT (SE) - Any equipment used in the loading of an
explosive system or launch device on an aircraft.
ARMAMENT WEAPONS SUPPORT EQUIPMENT (AWSE) - Consists of all the equipment
included in the terms armament SE, WSE, and logistics SE.
ARTICLE (EQUIPMENT OR END ITEM) - Components, assemblies, subassemblies, and parts

connected or associated together to perform an operational function.
ASSEMBLY - See EQUIPMENT, DIVISION OF.
ASSIGNMENT - Statement of positive intention that specifically designated aircraft are or will
be in the custody of specifically designated organizational units.
AUDIT - As applied to QA, a periodic evaluation of detailed plans, policies, procedures,
products, directives, and records. See MANAGEMENT AUDIT.
AUGMENTED SUPPORT - An interim arrangement during initial development or production
for the support of the equipment by the contractor on an as required basis pending assumption of
support responsibility by the government.

AUTHORIZED CALIBRATION COURSE OR EQUIVALENT - Those PME specialists

training courses provided to the Navy by the Air Force under inter-service support agreements.
Equivalency includes graduate or associate degrees in appropriate physical sciences and
engineering fields or satisfactory completion of a 4-year apprentice-training program in the field
of calibration.
AUTHORIZED I-LEVEL CALIBRATION TRAINING - Courses administered by
NAMTRAGRUDETs that have been coordinated with TYCOMs and appropriate technical
offices and approved by CNO; also PME specialists training courses provided to the Navy or the
Air Force under interservice support agreements.
AUTOMATIC DISTRIBUTION - The action that provides initial distribution of publications to
newly activated aircraft squadrons or ships and that provides definite follow-on distribution of
supplementary publications, for example, changes, revisions, or supplements, to the recipients of
the publications on initial distribution or to authorized requesters.
AUTOMATIC TEST EQUIPMENT (ATE) - Equipment that carries out a predetermined
program of testing for possible malfunction with minimum reliance upon human intervention.
AVAILABILITY (AIRCRAFT) - Applies to aircraft in an operating or non-operating status that
may be available for flight, upkeep, or rework as specified. When the term is used and not
qualified it refers to commission availability.
AVIATION ACTIVITY - A formally structured staff, command, squadron, unit, or detachment
headed by a Commander, CO, or OINC responsible for management, maintenance, material, and
logistic support of naval aeronautical equipment.
AVIATION CAPABLE SHIP - A non-aviation ship that can be used as an aviation-operating
platform.
AVIATION CONSOLIDATED ALLOWANCE LIST (AVCAL) - A consolidated list of
aeronautical material, tailored to each individual ship and MAG, to support assigned or
embarked aircraft flight operations. It is normally prepared by NAVICP Philadelphia, PA under
direction of the air TYCOM.
AVIATION LIFE SUPPORT SYSTEM (S) (ALSS) - Items of equipment and clothing needed to
allow aircrew members and aircraft passengers to function within all parameters of the flight
environment, safely egress from disabled aircraft and descend/ascend to the surface, and survive
on land and water and to interface with rescue forces.
AVIATION MAINTENANCE TRAINING CONTINUUM SYSTEM (AMTCS) - All training
and associated infrastructure required to support naval aviation maintenance.

AVIATION MAINTENANCE TRAINING CONTINUUM SYSTEM (AMTCS) TOOLS -

Knowledge/skill tools consist of CBT in the form of interactive courseware with computer
managed instruction and computer aided instruction. Management tool is the ASM, which
provides test and evaluation, recording, a feedback system, and the MTL. Aviation training
devices host CBT and ASM.
AVIATION SHIP - Specifically CV, CVN, LPD, LHA, and LHD and type ships are designated,
for NAMP purposes, as aviation ships.
AVIATION SUPPORT DIVISION (ASD) - A function of the supporting supply activity. It is
the liaison point for all material requirements and includes a Component Control Section and a
Supply Response Section.
AVIONICS - The application of electronics to aviation and astronautics. For purposes of the
NAMP, avionics is interpreted to include electronic, electrical, instrument, flight control, fire
control, and bombing equipment and their subsystems taken either as independent equipment,
groups of equipment, or integrated systems to accomplish assigned military missions.
AVIONICS SUPPORT EQUIPMENT (SE) - Avionics SE (common and peculiar) includes all
equipment of an electronic nature used for, but not limited to, testing, troubleshooting, aligning,
or calibrating aircraft systems and components. Examples of such equipment are general-
purpose electronic test equipment, automatic test equipment, vacuum pressure testers,
temperature, and fuel quantity indicator test sets.
AWAITING MAINTENANCE (AWM) REASON CODE - A one-character numeric code that
describes the reason for an AWM condition.
AWAITING MAINTENANCE (AWM) TIME - Time when an aircraft is NMCM or PMCM and
no maintenance is being performed on the systems causing the NMCM or PMCM status. Other
maintenance upkeep not causing an NMCM or PMCM condition may be performed on the
aircraft during this period.
AWAITING PARTS (AWP) - The condition that exists when materials required to complete a
maintenance action are not available on station/ship. AWP is that time when no work can be
performed on the item being repaired due to a lack of ordered parts. Parts are not considered to
be ordered until the demand has been forwarded to the Supply Response Section of the Supply
Department. The time when AWP occurred and the length of time it lasted is recorded in the
Maintenance/Supply Record Section. Items which cause AWP during on-equipment work are
identified in the Removed/Old Item Section. Items which cause AWP during off-equipment
work are identified in the (H-Z) Failed/Required Material Section.

BACK ORDER - A generic term applied to commitments made to customers by inventory

managers that material required by the customer will be available by a specified date.
BAILMENT - Aircraft under the controlling custody of COMNAVAIRSYSCOM but in the
physical custody of non-Navy organizations pursuant to a contract for research, development,
and evaluation or production testing for the Navy.
BASIC MISSION - The basic intended function or capability of the aircraft, such as bomber,
fighter, patrol, observation, and utility. See MODEL DESIGNATION.
BASIC MISSION SYMBOL - A letter used to indicate the basic intended function or capability
of the aircraft, such as bomber, fighter, patrol, and utility. See MODEL DESIGNATION.
BATTLE FORCE INTERMEDIATE MAINTENANCE ACTIVITY (BFIMA) -
Repair/maintenance of components and repair assets belonging to units assigned to the battle
force during a deployment cycle as resourced by the TYCOM. It is not intended to substitute D-
level maintenance work/activity previously provided by tender support.
BENCH CHECK - A physical inspection or functional test of an item removed for an alleged
malfunction to determine if the part or item is serviceable or repairable. It also includes a
determination of the extent of maintenance, repair, or possible overhaul required to return it to
serviceable status.
BENCH TEST - The subjection of aircraft, engines, accessories, equipment, and equipage to
prescribed conditions and specifications, with the use of shop test equipment, to ensure proper
functioning.
BEYOND CAPABILITY OF MAINTENANCE (BCM) - A term/code used by IMAs when
repair is not authorized at that level or when an activity is not capable of accomplishing the
repair because of a lack of equipment, facilities, technical skills, technical data, or parts. BCM
will also be used when shop backlog precludes repair within time limits specified by existing
directives.
BOARD OF INSPECTION AND SURVEY - Convenes at COMNAVAIRSYSCOM
approximately 60 days subsequent to the start of the Board of Inspection and Survey preliminary
evaluation and is attended by representatives of CNO, CNATRA, fleets,
COMNAVAIRSYSCOM, NAVICP Philadelphia, PA, and contractors. Evaluation of the aircraft
and its SE is reported and action to be taken is determined. Proposed configuration of the
aircraft for fleet delivery is established. Readiness of the aircraft and its associated equipment to
commence the Fleet Introduction Program is a most important decision.

BULLETIN - A document issued by COMNAVAIRSYSCOM, which directs a one-time

inspection of equipment, contains related instructions, and disseminates administrative or
management information as related to maintenance of weapon systems.
BUREAU NUMBER (BUNO) - An un-hyphenated serial number not exceeding six digits is
used to identify individual airframes within the naval aircraft inventory. Each number is unique
to a particular airframe. Assignment is controlled by the CNO.
CALENDAR AGE - The total number of calendar months since acceptance.
CALIBRATE - To determine and make required corrections in calibration standards or PME. It

consists of the comparison of two instruments, one of which is a certified calibration standard of
known accuracy, to detect and adjust any discrepancy in the accuracy of the other instrument or
PME being compared with the certified calibration standard.
CALIBRATION - The process by which calibration installations compare a calibration standard
or PME with a standard of higher accuracy to ensure the former is within specified limits
throughout its entire range. The calibration process involves the use of approved instrument
calibration procedures.
CALIBRATION FACILITY - An installation under the control of the military departments or

any agency of DOD that provides calibration services for PME and calibration standards used by
activities engaged in research, development, test, and evaluation, production, QA, maintenance,
supply, and operation of weapon system(s), equipment, and other DOD material.
CALIBRATION INTERVAL - The maximum length of time between calibrations that
calibration standards or PME are expected to maintain reliable measurement capability.
CALIBRATION PROCEDURE - A document that outlines the steps and operations to be

followed by calibration personnel in calibrating an instrument.
CALIBRATION STANDARD - COMNAVAIRSYSCOM calibration installation equipment
used to maintain continuity of value in the units of measurement embodied by periodic
comparison with higher echelon or National Institute of Standards and Technology.
CANNIBALIZATION/CANNIBALIZE - Removal of serviceable parts from one aircraft for
installation on another.
CATALOG OF NAVY TRAINING COURSES (CANTRAC) (NAVEDTRA 10500) - Contains

information on schools and courses under the purview of CNET, Amphibious Forces, Atlantic
and Pacific, and other Navy training commands. The function of CANTRAC is to provide a
consolidated, centrally produced catalog, presenting courses in standardized form.

CERTIFICATION - Written testimony from competent instructional authority, which the

certified individual is qualified to act in a specific capacity.
CHANGE - A document which directs and provides instruction for the accomplishment of a
change, modification, repositioning, or alteration of material in in-service aircraft, weapon
systems, assemblies, subassemblies, components, or SE. See TECHNICAL DIRECTIVE (TD).
CHECKOUT - A sequence of functional or operational tests, or calibration, to determine the
condition and status of a weapon system or its elements.
CLASS - A broad classification of the general mission purpose of a Navy aircraft design, for
example, fighter, attack, patrol, or transport. Subclass refers to the next lower level of
classification into a more specific mission purpose of design, for example, all-weather
photographic.
COGNIZANCE SYMBOL (COG) - A two-position numeric-alpha code prefixed to NSNs,
identifies the type of funds used to purchase the item and the activity that is the inventory
manager.
COMMERCIAL AND GOVERNMENT ENTITY (CAGE) - A five position code assigned to
manufacturers and non-manufacturers organizational entities and contractors of items procured
by agencies of the federal government.
COMMERCIAL DERIVATIVE NAVY AIRCRAFT - Aircraft procured by the Navy for which
there is a certified commercial counterpart.
COMMON ITEM - An item of standard design, application, and specification, normally

procurable from several manufacturers or suppliers, or available from only one manufacturer but
with wide usage or of such design that the multiple application is apparent.
COMMON SERVICING - That function performed by one military service in support of another
military service for which reimbursement is not required from the service receiving the support.
COMMON SUPPORT EQUIPMENT (CSE) - Comprised of only those general purpose items
supplying or measuring broad parameters of physical properties that are known to be established
in the using service's inventory, for example, ground electrical, pneumatic, and hydraulic power
units; towing, hoisting, and fueling devices; signal generation devices; and voltage, amperage,
and phase measuring devices. The application of SE items to other end items, systems, or
components does not in itself justify or classify the items as CSE. CSE is divided as AVIONICS
SE (common and peculiar) and NONAVIONICS SE (common and peculiar).

COMPLEMENT - The quantity and quality of aircraft prescribed by CNO as the optimum
inventory of an organizational unit whose mission requires aircraft.
COMPONENT REPAIR - See MAINTENANCE LEVELS.
CONDITION CODES - See MATERIAL CONTROL CODE (MCC).
CONDITIONAL INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
CONFIGURATION - The functional and physical characteristics of material as described in
technical documents and achieved in a product.
CONFIGURATION CONTROL - The systematic evaluation, coordination, approval or
disapproval of proposed changes, and the implementation of all approved changes to the
configuration of a configuration item after formal establishment of its configuration
identification.
CONFIGURATION CONTROL BOARD (CCB) - A group of knowledgeable, formally
designated representatives, from pertinent management/engineering/support organizations
established to review and approve or disapprove change proposals by the government or a
contractor.
CONFIGURATION IDENTIFICATION - The current approved or conditionally approved
technical documentation for a configuration item as set forth in specifications, drawings and
associated lists, and documents referenced therein.
CONFIGURATION ITEM LIST - A list of those status items designated for configuration
control and configuration accounting.
CONFIGURATION ITEM(S) - Items designated by DOD components for configuration
management. They may differ widely in complexity, size, and kind. Examples are an aircraft,
ship, mobile test unit, navigation system, embedded computer, computer program, facility,
electronic system, test meter, or a round of ammunition.
CONFIGURATION MANAGEMENT (CM) - A process for establishing and maintaining
consistency of a product's performance, functional, and physical attributes with its requirements,
design, and operational information throughout its life. The CM effort includes identifying,
documenting, and verifying the functional and physical characteristics of an item; recording the
configuration of an item; and controlling changes to an item and its documentation. It shall
provide a complete audit trail of decision and design modifications.

CONFIGURATION STATUS ACCOUNTING - The recording and reporting of information that

is needed to manage configuration effectively, including the approved configuration
identification, the status of proposed changes to configuration, and the implementation status of
approved changes.
CONFIGURED ITEMS - Those selected items that require continuation of configuration status
accounting during the operational phase. An item that affects mission capability and can be
interchanged with a similar item that will result in a different mission capability.
CONFIRMED CANCELLATION - The official notification by Supply that action will not be
taken on a requisition and the requisition is cancelled.
CONSOLIDATED REMAIN-IN-PLACE LIST (CRIPL) - A listing of all authorized remain in

place items, is published by NAVICP and approved by the TYCOMs and
COMNAVAIRSYSCOM.
CONSOLIDATED SE LIST - A summary of government decisions on contractor's SE

recommendations and other pertinent data relative to support of the end article. It is a list of
contractor recommended SE.
CONSOLIDATED SHIPBOARD ALLOWANCE LIST (COSAL) - Both a technical and a

supply document tailored to suit an individual ship or MAG material support requirements.
Technical in that equipment nomenclature, operating characteristics, applicable technical
manuals, plans, repair parts, and special tool requirements for the operation and repair of ship or
MAG equipment are described and documented. As a Supply document, it lists, by equipment,
the NSN for each item supported by the Naval Supply System. It is a coordinated listing of ship
or MAG spares, repair parts, and consumable allowances. It also provides the basis for a ship or
MAG inventory management and development of second and third echelon support
requirements. The COSAL is prepared by NAVICP Mechanicsburg, PA, for ship or MAG
installed and portable mechanical, electrical, electronics, and ordnance equipment. NAVICP
Philadelphia, PA, produces COSALs for aircraft launch and recovery systems, optical landing
equipment, flight deck lighting, jet blast deflectors, and expeditionary airfields.
CONSUMABLE ITEM - Any item or substance, which, upon installation, loses its identity and
is normally consumed in use or cannot be economically repaired.
CONSUMABLE MATERIALS - See EXPENDABLE SUPPLIES AND MATERIAL.
CONTAMINANTS - Particles of foreign material, which may or may not be visible to the
unaided eye.

CONTRACT FIELD SERVICES - Those engineering and technical services provided to DOD
personnel by commercial or industrial companies on-site at defense locations by trained and
qualified engineers and technicians.
CONTRACT MAINTENANCE - The maintenance of material by commercial organizations
without distinction as to levels of maintenance accomplished and maintenance accomplished by
private industry in government-owned, contractor-operated plants; contractor owned, contractor
operated plants; or by contract field teams.
CONTRACTING OFFICER - A person or persons with the authority to enter into (purchase),
administer, or terminate contracts and make related determinations and findings.
CONTRACTING OFFICER'S REPRESENATIVE (COR) - A representative designated by the

contracting officer who performs primarily technical functions. The contracting officer can
designate government personnel to act as authorized representatives for such functions as
providing to contractors technical direction, inspection, approval of shop drawings, testing,
approval of samples, and other functions of a technical or administrative nature not involving a
change in the scope, price, terms, or conditions of the contract or order.
CONTRACTOR ENGINEERING AND TECHNICAL SERVICES (CETS) - Those services
performed by commercial or industrial companies which provide advice, instruction, and training
to personnel of the military departments in the installation, operation, and maintenance of DOD
aeronautical systems and equipment. CETS consist of CONTRACT FIELD SERVICES,
CONTRACTOR PLANT SERVICES, and FIELD SERVICE REPRESENTATIVES.
CONTRACTOR FURNISHED EQUIPMENT (CFE) - Items manufactured or purchased by the
contractor for inclusion in or support of an aeronautical system.
CONTRACTOR PLANT SERVICES - Those services provided to personnel of the military
departments in the plants and facilities of the manufacturer of military equipment or components
by trained and qualified engineers and technicians employed by the manufacturer.
CONTRACTOR SUPPORT PROGRAMS - Maintenance programs associated with commercial
derivative Navy aircraft, where Navy personnel perform the O-level maintenance with limited I-
level effort. The contractor issues ready for issue components and provides limited diagnostic
assistance.
CONTROLLING CUSTODIAN - Air commands and COMNAVAIRSYSCOM fleet support
units exercising administrative control of assignment, employment, and logistic support of
certain aircraft and engines, as specified by the CNO.

CONTROLLING CUSTODY - Administrative control of the assignment, logistic support,

employment, and responsibility to account for and provide information about the aircraft or SE.
CONVERSION IN LIEU OF PROCUREMENT - Any conversion, service life extension,
update, expansion/change of mission capability, improvement of combat capability, or
combination of the foregoing. It is performed on existing aircraft for the primary purpose of
providing a reasonably acceptable, modernized aircraft, as an alternative to procuring new
aircraft to meet or maintain force levels.
CORRECTIVE ACTION - Action necessary to remove or control the cause of deficiencies in
products, systems, or processes. A documented design, process, procedure, or material’s change
implemented and validated to correct the cause of failure or design deficiency.
CORRECTIVE MAINTENANCE - The actions performed to restore an item to a specified
condition.
CRITICAL DEFECT - See DEFECT.

CRITICAL SUPPLIES AND MATERIALS - Those supplies vital to the support of operations,
which, for various causes, are in short supply or are expected to be in short supply.
CROSS SERVICING - That function performed by one military service in support of another
military service for which reimbursement is required from the service receiving the support. See
SERVICING.
CUSTODY - Cognizance and limited responsibilities for aircraft equipage, equipment, material,
and SE. Categories of custody are CONTROLLING CUSTODY, PHYSICAL CUSTODY, and
REPORTING CUSTODY.
CUSTODY CODES - Custody codes are single position alpha characters, which provide
supplemental accountability detail about an SE transaction and the effect of the transaction on
supply and financial records. These codes identify a specific category of SE items placed in the
primary custody of an IMA. These items are issued to other activities (usually an organizational
maintenance activity) on a sub-custody basis.
CUSTOMER ACTIVITY - MEASURE participants who coordinate the servicing and calibration
of PME/TAMS within a specific area, for example, AIMDs, MALS, and ships.
CUSTOMER SERVICE - D-level services, including emergency check, test, minor repair,
manufacture of parts, heat treat, plating, and machine shop service to relieve NMCS, PMCS, and
work stoppage conditions.

DAILY INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
DATA - The method of communicating concepts, plans, descriptions, requirements, and

instructions related to technical projects, material, systems, and services. These may include
specifications, standards, engineering drawings, associated lists, manuals, and reports, including
scientific and technical reports; they may be in the form of documents, displays, sound records,
and digital or analog data.
DATA COLLECTION CODES - 3M codes used in the MDS. See ACTION TAKEN (AT)
CODE, AWAITING MAINTENANCE (AWM) REASON CODE, EQUIPMENT
OPERATIONAL CAPABILITY (EOC) CODE, MALFUNCTION (MAL) DESCRIPTION
CODE, MANUFACTURER CODE (CAGE), ORGANIZATION (ORG) CODE, TECHNICAL
DIRECTIVE (TD) CODE, TECHNICAL DIRECTIVE (TD) IDENTIFICATION CODE,
TECHNICAL DIRECTIVE (TD) STATUS CODE, TYPE EQUIPMENT CODE (TEC),
TIME/CYCLE PREFIX CODE, TRANSACTION CODE, TYPE MAINTENANCE (TM)
CODE, WHEN DISCOVERED (WD) CODE, WORKCENTER CODE, and WORK UNIT
CODE (WUC).
DATA ELEMENT - A single unit of data related to an item record. Each data element is
identified by a specific data element number to permit its selection for inclusion in output
documents, indicating its relationship to other data, and for file maintenance purposes.
DATA SERVICES FACILITY (DSF) - An activity that converts document data into machine
records and uses these records to produce machine reports and listings.
DATA STORAGE SET - Monitors the operational status of aircraft weapon systems. The
monitoring of engines, fuel, airframe, non-avionics systems, and fluid levels are accomplished by
a combination of instrumentation sensors and built-in-test of selected systems.
DATA STORAGE UNIT - A storage medium used by the data storage set for significant
maintenance data measured in-flight and after landing.
DEFECT - Any nonconformance of the unit or product with specified requirements. Defects
will normally be grouped into one or more of the following classes but may be grouped into
other classes or subclasses within these classes:

a. DEFECT, CRITICAL - A defect that constitutes a hazardous or unsafe condition, or as

determined by experience and judgment could conceivably become so, thus making the aircraft
unsafe for flight or endangering operating personnel.
b. DEFECT, MAJOR - A defect, other than critical, that could result in failure or
materially reduce the usability of the unit or part for its intended purpose.
c. DEFECT, MINOR - A defect that does not materially reduce the usability of the unit or
part for its intended purpose or is a departure from standards but which has no significant bearing
on the effective use or operation of the unit or part.
DEFENSE FINANCE AND ACCOUNTING SERVICE (DFAS) - The activity designated to
perform operating budget accounting for the Commanders in Chief, U. S. Atlantic and Pacific
Fleets and respective TYCOMs, including associated accounting and reporting for ships, staffs,
designated shore activities, aviation squadrons, mobile construction battalions, and
miscellaneous units and commands, as assigned. Operating force units and commands transmit
unfilled orders to the designated fleet accounting office and receive special listings for review,
validation, and adjustment of operational target records.
DELIVERY - The logistic process involved in readying an aircraft for transfer from the custody
of a COMNAVAIRSYSCOM Fleet Support Activity to the custody of an operating command.
DEPARTMENT OF THE NAVY (DON) - Separately organized under the SECNAV. It
operates under the authority, direction, and control of the SECDEF. It is composed of the
executive part of DON; including the Office of the SECNAV, the Office of the CNO, and the
Headquarters, Marine Corps; the entire operating forces, including naval aviation, of the Navy
and the Marine Corps, and the reserve components of those operating forces; and all shore
activities, headquarters, forces, bases, installations, activities, and functions under the control or
supervision of the SECNAV. It includes the Coast Guard when it is operating as a service in the
Navy.
DESIGN ACTIVITY - The activity responsible for design, preparation, and maintenance of
engineering documents for a given item of military property. The activity may be a government
activity, contractor, or vendor.
DESIGN CHANGE NOTICE - A formal notification prepared by a contractor as a result of an

approved engineering change to the end article on the contract describing the effect of the change
on repair parts that have been procured, recommended/interim released.
DESIGNATED REPAIR POINT - A D-level rework facility assigned the technical and repair
responsibility for designated weapon system(s).

DESIGNATED REWORK POINT (DRP) - A D-level rework facility assigned the technical and
rework responsibility for designated weapon system(s).
DESIGNATED SUPPORT POINT (DSP) - A supply activity, such as a Naval Supply Center,
assigned to provide supply support to a designated overhaul point.
DETACHMENT - A temporary reporting custodian formed with aircraft assigned from a parent
squadron or unit. Detachments are established when a squadron deploys one or more aircraft to a
ship or base substantially removed from the location of the parent organization; the parent
squadron CO feels that it would be impractical to retain reporting custody of the aircraft so
deployed. Detachments have the same responsibilities, with respect to the requirements of this
instruction, as all other reporting custodians of aircraft.
DEVIATION - To depart from established policy or procedures, such as deviation from the
NAMP. A specific written authorization granted prior to the manufacture of an item to depart
from a particular performance or design requirement of a specification, drawing, or other
document for a specific number of units or a specific period of time. A deviation differs from an
engineering change in that an approved engineering change requires corresponding revision of
the documentation defining the affected item, whereas a deviation does not contemplate revision
of the applicable specification or drawing.
DIRECT MAINTENANCE - That effort expended by maintenance personnel in the actual

performance of maintenance on aircraft, aeronautical equipment, or SE per the applicable
technical manual. It applies equally to both contractor and GFE.
DIRECTED REMOVAL - A requirement to remove an item after a fixed period of operation
because there is insufficient confidence regarding continued operation and because failure during
operation would have serious consequences.
DIRECTIVE - A military communication in which a policy is established, a specific action is
ordered, or a plan is put in effect.
DOCUMENT - Specifications, lists, drawings, sketches, standards, pamphlets, reports, or other
information relating to design, procurement, manufacture, test, or inspection of items or services
under a contract. Also, in the MDS, any forms used to collect data at its source for conversion to
machine records.
DOWNTIME - That element of time during which the item is not in condition to perform its
intended function.

EDDY CURRENT - A method that uses induced eddy currents in detecting flaws in metal parts,
such as cracks, inclusions, voids, seams, and laps. This method can also be used for sorting
according to alloy temper, conductivity, and other metallurgical factors by variations in electrical
characteristics/energy losses. See NONDESTRUCTIVE INSPECTION (NDI).
EGRESS SYSTEM - An ejection seat, interconnect and sequence system, installed parachute and
seat survival kit, and the explosive devices and rocket motors used in their propulsion. It also
includes hatches or canopies, which are shattered or jettisoned from the aircraft by use of
explosive devices.
ELAPSED MAINTENANCE TIME (EMT) - For the purposes of Maintenance Data Reporting,
EMT is defined as the actual clock time, in hours and tenths, that maintenance was being
performed on a job. EMT does not include the clock hours and tenths for cure time, charging
time, or leak test when they are being conducted without maintenance personnel actually
monitoring the work. Although the EMT is directly related to job man-hours, it is not to be
confused with total man-hours required to complete a job. For example, if five men complete a
job in 2.0 hours of continuous work, the EMT=2.0 hours and the man-hours=10.0.
ELECTRONIC MATERIAL - Those electronic devices employed in the field of detection and
tracking (underwater, sea, land, air, and space), recognition and identification, communication,
aids to navigation, weapons control and evaluation, flight control, and electronic
countermeasures. Electronic devices are understood to include peculiar non-electronic units
required to complete individual operational functions, such as power supplies, hoist mechanisms,
antennas, and vehicles but to exclude associated non-electronic equipment identified by other
type designating systems.
END ARTICLE - An end weapon, aircraft system, subsystem, component, or equipment being
procured on a contract, including contractor furnished materials, for example, a transmission, an
engine, a computer, or a radio. Certain end articles are treated as end items for documentation
purposes under aviation 3M. This applies to repairable non-aeronautical equipment, such as a
computer or radio. Aircraft engines are also treated as end items when documenting TD
compliance or when work is performed on a removed engine. See END ITEM.
END ITEM - A final combination of end articles, component parts and materials that is ready for
its intended use, for example, aircraft, NC-2A, or avionics test bench.
ENGINE ACCESSORIES - Those items of equipment required for engine operation that are not
an integral part of the engine. Such equipment is included in the engine IPB. In most cases they
are attached to the engine, but in special situations could be airframe mounted, such as oil
pumps, fuel controls, engine driven fuel pumps, temperature amplifiers, afterburner controls,
carburetors, magnetos, distributors, and ignition harnesses.

ENGINE COMPOSITION TRACKING (ECOMTRAK) SYSTEM - An automated system used

for tracking the composition, location, and operating time/cycle counts or life usage indexes of
aircraft engines, propulsion systems, modules, and life limited components. ECOMTRAK is
used to develop long-range schedules for inspections, removals, replacements, procurements, and
rework schedules for these components, based on usage requirements and fixed or variable usage
rates. It provides important support to the RCM Program.
ENGINE INSPECTION - See INSPECTIONS.
ENGINEERING CHANGE PROPOSAL (ECP) - A term that includes both a proposed
engineering change and the documentation by which the change is described and suggested.
ENGINEERING COGNIZANCE - The delegated authority for issuing, maintaining, and

changing a specification, standard, or technical document.
ENLISTED AVIATION MAINTENANCE PERSONNEL TRAINING AND
QUALIFICATION JACKET - A standardized official record that provides a repository for the
accumulation of training for enlisted Marines engaged in aviation maintenance.
ENROUTE - The physical movement of aircraft incident to change in its physical or reporting
custody. See FERRY.
EQUIPAGE - The non-installed articles, not usually associated with a specific model of aircraft,
which make up the configuration on aircraft. Examples are life rafts, parachutes, safety belts,
survival equipment, portable fire extinguishers, flight clothing, and similar items.
EQUIPMENT - All articles needed to outfit an individual or organization. The term refers to
clothing, tools, utensils, vehicles, weapons, and similar items.
EQUIPMENT ALLOWANCE LISTS - A generic term indicating the publications, or sections
thereof, that prescribe the equipment and weapons authorized for military organizations.
EQUIPMENT APPLICABILITY INDEX - A part of the Naval Aeronautical Publications Index
which gives a listing of aircraft and equipment, arranged in alphabetical order, with applicable
manuals shown by their publication number.
EQUIPMENT MAINTENANCE MANAGEMENT - The process of developing workload
requirements, forecasting and planning, organizing, staffing, directing, and controlling the
engineering, industrial, and other resources necessary to effectively and economically support
the equipment operation objectives of the Navy.

EQUIPMENT OPERATIONAL CAPABILITY (EOC) CODE - EOC codes relate a particular

system/subsystem within a T/M/S of equipment to a specific mission. An EOC code is a three-
character alphanumeric code that identifies the degree of degradation to mission capability and
the system responsible for the degradation. The first character (alpha) is documented on the
VIDS/MAF Copy 1 (as applicable). The second and third characters (numeric) are computer
generated from the first two positions of the WUC.
EQUIPMENT OUT OF SERVICE (EOS) – Non-operational aircraft in relation to SCIR
documentation. Those aircraft, which are "OUT" of material condition reporting status and are
reported in an inventory status code other than A.
EQUIPMENT PERFORMANCE DATA - Historical information relating to maintainability and
reliability characteristics of systems, subsystems, and components of weapons systems and end
items during their operational application.
EQUIPMENT, DIVISION OF - The following is a sequential listing of equipment divisions:
a. PART - Pieces joined together that are not normally subject to disassembly without
destruction of the designed use.
b. SUBASSEMBLY - Two or more parts that form a portion of an assembly or a unit,

replaceable as a whole, but having a part or parts that are individually replaceable.
c. COMPONENT/ASSEMBLY - A number of parts or subassemblies, or any
combination, joined together to perform a specific function. This term applies to items that
cannot be further disassembled for test or repair without requiring shop facilities.
NOTE: The distinction between an assembly and a subassembly is not always exact. An
assembly in one instance may be a subassembly in another where it forms a portion of an
assembly.
d. UNIT - An assembly or any combination of parts, subassemblies, and assemblies
mounted together, normally capable of independent operation in a variety of situations.
e. GROUP - A collection of units, assemblies, or subassemblies, that is a subdivision of a

set or system, but is not capable of performing a complete operational function.
f. SET - A unit or units and the necessary assemblies, subassemblies, and parts connected
or associated together to perform an operational function.
g. SUBSYSTEM - A major portion of a system that performs a specific function in the
overall operational function of the system.

h. SYSTEM - A complete system within the weapon such as landing gear system, flight
control system, or radar navigation system.
i. ANCILLARY DEFINITIONS -
(1) ACCESSORY - A part, subassembly, or assembly designed for use in
conjunction with or to supplement another assembly, unit, or set that contributes to the
effectiveness without extending or varying the basic function of the assembly or set. An
accessory may be used for testing, adjusting, or calibrating.
(2) ATTACHMENT - A part, subassembly, or assembly designed for use in

conjunction with another assembly, unit, or set that contributes to the effectiveness by varying
the basic function of the assembly or set.
EXAMINATION - An element of inspection consisting of investigation, without the use of

special laboratory appliances or procedures, of supplies and services to determine conformance
to those specified requirements that can be determined by such investigations. Examination is
generally nondestructive and includes, but is not limited to, visual, simple physical manipulation,
gauging, and measurement.
EXCEEDANCE - Surpassing or exceeding a life limit.

EXCESS PROPERTY - Property in the possession of any component of DOD that exceeds the
quantity required or authorized for retention by that component.
EXECUTIVE SERVICE - The DOD service that is formally designated, assigned responsibility,
and delegated authority for life-cycle management of a multi-service aeronautical system.
EXPEDITIOUS REPAIR (EXREP) - The processing for repair of NIS or NC components
(repairable or consumable). These components must be in support of, or related to, an NMCS or
PMCS, situation. This processing is accomplished by the immediate removal of the component
from the aircraft, expedited delivery and induction for repair, and the earliest return to RFI status
for supply issue under the standard material issue priority system.
EXPENDABLE SUPPLIES AND MATERIAL - Supplies that are consumed in use, such as
ammunition, paint, fuel, cleaning and preserving materials, or supplies that lose their identity,
such as spare parts. Sometimes, they are referred to as consumable supplies and material.
EXPERIMENTAL AIRCRAFT - Aircraft acquired by the Navy solely for use in research and
development.

EXPLOSIVE ORDNANCE - Complete air launched weapon system(s) and components, except
torpedoes and mines. Torpedoes and mines, supported by the COMNAVSEASYSCOM, are in
some cases adapted to aircraft delivery. COMNAVAIRSYSCOM is responsible for the
modification and equipment necessary to carry these weapons in aircraft.
EXPLOSIVE SYSTEM - Includes its components and the operationally adjacent mechanisms.
Examples of explosive systems are: small arms, chaff dispensers, projectiles, bombs, missiles,
rockets, targets using explosive materials, mines, torpedoes, grenades, charges, rounds, CADs,
PADs, explosively operated stud drivers, gun mounts, missile grenades, and sonorbuoys.
FACILITY - Any building, property, space, shop, hangar, workcenter, or parking area, both
afloat and ashore, used for the upkeep, maintenance, and repair of aircraft, aircraft weapon
systems, or aircraft components.
FACILITY MAINTENANCE - Routine, recurring work required to keep a facility, plant,
building, structure, ground facility, utility system, or any real property in such a condition that it
may be continuously used at its original or designed capacity, efficiency, and intended purpose.
FAILURE - The event, or inoperable state, in which any item or part of an item does not, or
would not, perform as previously specified.
FAILURE CAUSE - The physical or chemical processes, design effects, quality defects, part
misapplication or other processes which are the basic reason for failure or which initiate the
physical processes by which deterioration proceeds to failure.
FAILURE MODE - The specific manner of failure; the engineering mechanism of failure; the
circumstance or sequence of events, which leads to a particular functional failure.
FAILURE RATE - The number of failures of an item per unit measure of life (cycles, time,
miles, events, etc. (as applicable) for the item).
FEDERAL LOGISTICS DATA (FEDLOG) - is an interactive query system using a variety of
types of search data to significantly reduce the time required to access all information necessary
to identify and order supplies.
FERRY - The process of flying an aircraft from one physical location to another. Within the
aviation community this term has two meanings: any flight whose primary purpose is relocation
of the airframe; portable ferry flights conducted per ACC's/TYCOM's directives. These flights
are funded by an organization other than the aircraft-reporting custodian. This definition applies
to all applications of the term ferry as it appears in this instruction.

FIELD CALIBRATION ACTIVITY (FCA) - An I-level (W/C 670) calibration activity that
provides calibration/repair services to MEASURE participants.
FIELD LEVEL REPAIRABLE (FLR) - A low cost repairable, capable of being restored to
serviceable condition at the IMA, as indicated by the SM&R code. Final disposition of an FLR
usually rests with the IMA.
FIELD SERVICE REPRESENTATIVE - An employee of a manufacturer of military equipment
or components who provides liaison or advisory service between the company and the Navy for
their company’s equipment or components. See CONTRACTOR ENGINEERING AND
TECHNICAL SERVICES (CETS).
FIRST-DEGREE REPAIR - The repair of gas turbine engines to a depth, which includes and
goes beyond that repair authorized for second- and third-degree IMAs. It includes compressor
rotor replacement and disassembly to a degree that the compressor rotor is removed. Any degree
of repair, which requires compressor rotor removal, constitutes first-degree repair. Only those
activities specifically designated as first-degree repair activities and included in NAVAIR NOTE
4700 will be outfitted to accomplish repair of that magnitude.
FIX PHASE - The portion of a scheduled inspection that involves the correction of discrepancies
found during the look phase.
FIXED ALLOWANCE MANAGEMENT AND MONITORING SYSTEM - A mechanized
supply database management system used by most major naval air activities to support the IMA
supply operation. It is a subsystem of the UADPS presently in use throughout the Navy.
FLEET AVIATION SPECIALIZED OPERATIONAL TRAINING GROUP (FASOTRAGRU)-
An activity that trains fleet personnel under TYCOM direction in operational and tactical usage
of weapon systems and in aviation maintenance management and administration.
FLEET CONTROLLED MATERIAL - Material under the requisitioning, rationing, and issue
control of the aviation TYCOMs, COMNAVAIRLANT/COMNAVAIRPAC, or their designated
controlling agencies. The Aviation Material Offices, Norfolk, VA and San Diego, CA publish a
list of fleet controlled material.
FLEET INTRODUCTION PROGRAM - An accelerated flight program that lasts approximately
100 flight hours per aircraft. Normally conducted at the NAVAIRWARCENACDIV Patuxent
River for the purpose of introducing a new model to fleet personnel for indoctrination in the
operation and maintenance of the aircraft. A secondary purpose is to provide a further check on
the readiness of the aircraft for fleet delivery.

FLEET INTRODUCTION PROGRAM CONFERENCE - A conference held either at
NAVAIRWARCENACDIV Patuxent River, MD or COMNAVAIRSYSCOM at the conclusion
of the Fleet Introduction Program. Any changes that are found necessary in the proposed
configuration of the aircraft for fleet delivery are determined and the status of repair parts, SE,
special tools, and test equipment is examined. The CNO, CNET, fleets,
COMNAVAIRSYSCOM, NAVICP Philadelphia, PA, and contractor representatives attend.
FLEET MARINE FORCE (FMF) - A force of arms comprising land, air, and surface elements of
the U. S. Marine Corps. The FMF is an integral part of a U. S. Fleet and has the status of an
operational TYCOM.
FLEET READINESS ACTION GROUP (FRAG) - An organization unit within a
NAVAVNDEPOT, which provides assistance to the fleet.
FLEET REPLACEMENT ENLISTED SKILLS TRAINING (FREST) - An en-route training

program for specific weapon systems or equipment designated courses, provides training in
familiarization, operation, and maintenance of the weapon system to be maintained in formal
classrooms and practical application experience.
FLEET SUPPORT TEAM (FST) - The Integrated Program Team assigned the responsibility to
perform specified in-service engineering and logistics functions by the PMA.
FLIGHT - A flight begins when the aircraft first moves forward on its takeoff run or takes off
vertically from rest at any point of support and ends after airborne flight when the aircraft is on
the surface and either; (a) the engines are stopped, (b) the aircraft has been on the surface for 5
minutes, or (c) a change is made in the pilot in command. A series of landings is considered part
of one flight and the provisions of (b) above do not apply. OPNAVINST 3710.7 contains a more
precise definition.
FLYABLE - An aircraft in such material condition as to be safe and capable of normal flight
operations without regard to: capability to perform a specific mission, weather, personnel
availability, base condition, fuel condition, armament, or flight schedule.
FOREIGN OBJECT DAMAGE (FOD) - Damage to aeronautical equipment, for example,
aircraft, engines, missiles, drones, and SE caused by an object(s) external to the equipment. (Gas
turbine engine FOD is defined as damage that exceeds serviceable limits caused by ingestion of
objects not organic to the damaged engine.)

FORMATS - Reports generated from the MEASURE Program that list specific information in
varying formats. Formats are either generated locally or published and distributed by MOCCs
Norfolk and San Diego to customer services and calibration facilities. In addition to
standardized formats, standard and adhoc queries are available via on-line access to the
cognizant MOCC. The following defines typical formats utilized by COMNAVAIRSYSCOM
maintenance activities:
a. Inventory Format 310 - The customer activity maintains the inventory and is responsible
for the accuracy of the information. Provides important information, such as P/N, S/N, sub
custodian, calibration interval, scheduled laboratory code, and next due date.
b. Inventory Format 350 - Normally distributed by customer activities and maintained by
sub custodians. Format 350 lists only items from the parent Format 310 that is checked out to
and under physical control of the sub custodian.
c. Laboratory Recall Format 801/803 - A report that lists all items requiring calibration
during a specified time frame. Format 801 is sorted by customer activity and next due date and
the Format 803 is sorted by next due date. The report lists items requiring servicing in-lab and
on-site, by due date, for the current month, the following 3 months, and items overdue for
calibration.
d. Recall Format 802/805 - A report that lists all items requiring calibration during a
specified time frame. Format 802 is sorted by sub custodian and next due date and the Format
805 is sorted by next due date. Customer activities distribute Format 802 reports to appropriate
sub custodians. The report lists items requiring servicing in-lab and on-site, by due date, for the
current month, the following 3 months, and items overdue for calibration.
NOTE: Refer to OP43P6B for other available MEASURE reports.
FULL MISSION CAPABLE (FMC) - Material condition of an aircraft that can perform all of its
missions. FMC is subdivided into FMC Maintenance (M) and FMC Supply (S). FMC Hours =
MC Hours - (PMC Hours + OPC Hours).
FULL MISSION CAPABLE MAINTENANCE (FMCM) - The material condition of an FMC
aircraft that is not OPC because of maintenance requirements existing on inoperable
subsystem(s) which degrade the end item from OPC to FMCM. FMCM time starts when the
condition is discovered, except when the discovery is made in flight. In flight malfunction
FMCM time starts at the termination of flight. FMCM time stops when maintenance is
completed or interrupted by a supply shortage. Report work stoppage resulting from parts non-
availability as FMCS. FMCM time resumes when required supply item(s) are delivered to the
maintenance activity. FMCM Hours = FMC Hours - FMCS Hours. See FULL MISSION
CAPABLE (FMC).

FULL MISSION CAPABLE SUPPLY (FMCS) - The material condition of an FMC aircraft not
OPC because maintenance required to correct the discrepancy which degrades the end item from
OPC to FMCM cannot continue because of a supply shortage. Start FMCS time when a supply
demand has been made for an item required to continue maintenance. Stop FMCS time at the
time the material is delivered to the designated delivery point or change of EOC code. FMCS
Hours = FMC Hours - FMCM Hours. See FULL MISSION CAPABLE (FMC).
FUNCTIONAL CHECK FLIGHT (FCF) - Flights performed to determine if the airframe, power
plant, accessories, and items of equipage are functioning per predetermined requirements while
subject to the intended operating environment. FCFs are conducted when it is not feasible or
possible to determine safe/required functioning by means of ground checks.
FUNCTIONAL TEST - The testing of installed aircraft/engines, accessories, and equipage to
determine proper functioning, particularly with respect to the applicable system.
FUND CODE - The project tracking funding codes. A two-digit code identifying the operating
budget and the appropriate expense element. Fund codes are used to charge the appropriate
TYCOM's funds and to identify the nature of the expense.
GAS TURBINE ENGINES - All turbine engines, whether used to power flight (including target
drones, missiles, and missile targets), for auxiliary power, or for starting purposes. Airborne or
ground units are included in the meaning of this term.
GENERAL SERVICES ADMINISTRATION (GSA) - An integrated manager responsible for
supporting all federal agencies for specific classes of material or specific items within classes
assigned to other integrated managers.
GOVERNMENT FURNISHED EQUIPMENT (GFE) - Equipment that has been selected and is
to be furnished by the government to a contractor or government activity for installation in, use
with, or in support of the aeronautical system during production, conversion, or modification.
GOVERNMENT FURNISHED EQUIPMENT (GFE) MANAGER - The designated individual
or office assigned by the Executive Service Program Manager responsible for the GFE Program.
The GFE Manager provides a central point of contact for all GFE as related to the Aeronautical
System Program.
GOVERNMENT FURNISHED MATERIAL - Any material the government owns and is
furnished to a contractor in the performance of a contract. See GOVERNMENT FURNISHED
EQUIPMENT (GFE).

HELICOPTER DYNAMIC COMPONENT - The part or series of parts that transmits power
from the aircraft power plant to the rotary wing and rotary rudder (main, intermediate, and tail
gear boxes; main and tail rotors; clutches and related drive shafting).
HOT REFUELING - An operational evolution where an aircraft is refueled while the engine(s) is
(are) operating.
HOT SEATING - An operational evolution where the pilot/crew of an aircraft is changed while
the engine(s) is (are) operating and the aircraft is to be immediately re-launched.
I-LEVEL CALIBRATION ACTIVITY - A Navy activity, other than a Navy calibration or

standards laboratory, authorized by the TYCOM and COMNAVAIRSYSCOM to perform
calibration.
ILLUSTRATED PARTS BREAKDOWN (IPB) - A manual containing illustrations and part

numbers for all parts of the aircraft or equipment on which it is issued. The IPB contains
information required for ordering parts, including part numbers, and for identifying parts and
arrangements of parts in assemblies.
INACTIVE AIRCRAFT – Non-program and reserve stock aircraft.
INACTIVE TIME - That time during which an item is in the inactive inventory.
INDIVIDUAL MATERIAL LIST (IMRL) - A consolidated list shows items and quantities of
certain SE required for material readiness of the aircraft ground activity to which the list applies.
The lists are constructed by extracting those portions of SERMIS that pertain to the maintenance
and material logistics responsibilities of the activity to which the list applies. See AIRCRAFT
INTERMEDIATE MAINTENANCE MATERIAL READINESS LIST (AMMRL) PROGRAM.
INDIVIDUAL TRAINING STANDARDS SYSTEM (ITSS) - A Marine Corps performance
based, standardized, documentable, level progressive, technical skills training management and
evaluation program for enlisted Marines engaged in aviation maintenance.
INDUSTRIAL ESTABLISHMENT - Naval aeronautical production establishments, organized
along industrial rather than military lines. These establishments are equipped to perform aircraft
rework on a large scale and an extremely wide scope. They are capable of performing limited
manufacturing work. Only Navy and Marine Corps activities designated as NAVAVNDEPOTs
are included in this explanation.
INITIAL OUTFITTING - The process of issuing, assembling, and delivering allowances of
aeronautical material and equipment to vessels in any one of the following categories: (1) new
construction, (2) conversion, or (3) activating from reserve fleets.

INITIAL TRAINING - Training performed to enable the training agency to acquire the
capability for training. Normally, the initial cadre is composed of instructional personnel. The
scope of initial training includes furnishing those training aids, for example, transparencies,
charts, diagrams, and films, or devices evolved by the manufacturer in the production of new
weapons systems, preparation of technical or instructional publications, and initial instructional
training.
INITIATION OF PROCUREMENT ACTION - The time when the approved document
requesting procurement and citing funds is forwarded to the procuring activity. See
PROCUREMENT LEAD TIME.
IN-SHOP MAINTENANCE - Work that requires the use of shop facilities and cannot be
normally performed outside the shop. (Bench test and component disassembly and repair are
examples of in-shop maintenance work.)
INSPECT - To compare the characteristics of an item with established standards.
INSPECTION - The examination and testing of supplies and services, including raw materials,
components, and intermediate assemblies, to determine whether they conform to specified
requirements.
INSPECTIONS, AIRCRAFT/ENGINE -
a. ACCEPTANCE INSPECTION - An inspection performed at the time a reporting custodian
accepts a newly assigned aircraft, from any source, and on return of an aircraft from SDLM or
other major D-level rework. It includes an inventory of all equipment listed in the AIR,
verification of CADs and PADs, a configuration verification, hydraulic fluid sampling, a daily
inspection, and a complete FCF. For acceptance inspection purposes, verification of CADs,
PADs, and configuration is accomplished by visual external inspection and record examination
only. Disassembly beyond the daily inspection requirements of applicable PMS publications is
not required. Verify accuracy of flight hours on the Monthly Flight Summary (OPNAV
4790/21A) by checking the PERIOD and SINCE NEW blocks and operating hours on the
Equipment Operating Record (OPNAV 4790/31A) by checking the ACCUM block. Activities
may elect to increase the depth of equipment condition, visual external inspection, or record
examination indicates such action is warranted.

b. CONDITIONAL INSPECTION - An inspection conducted as a result of a specific

over-limit condition, or as a result of circumstances or events, which create an administrative
requirement for an inspection. Examples of over-limit conditions include hard landing,
overstress, over-temp, lightning strike, overweight takeoff or landing, and field arrestment.
Examples of administrative actions or requirements include pre-carrier or post-carrier
inspections, one-time inspections directed by higher authority (not directed by a TD), and
compass calibrations (when not directed by special inspection MRCs).
c. DAILY INSPECTION - An inspection conducted to inspect for defects to a greater
depth than the turnaround inspection.
d. MAJOR ENGINE INSPECTION - A comprehensive inspection performed to
determine the material condition of the engine. This inspection is performed with the engine
removed from the aircraft.
e. PHASE INSPECTION - A series of related inspections performed sequentially at
specific intervals. These inspections are the result of dividing the maintenance requirements into
small packages containing approximately the same workload.
f. SPECIAL INSPECTION - A scheduled inspection with a prescribed interval other than
daily, phase, major engine, or SDLM. The intervals are specified in the applicable PMS
publication and are based on elapsed calendar time, flight hours, operating hours, or number of
cycles or events, for example, 7, 14, 28 days; 50, 100, 200 hours; 10, 100 arrestments; or 5000
rounds fired.
g. TRANSFER INSPECTION - An inspection performed at the time an aircraft changes
physical or reporting custody. It includes an inventory of items listed in the AIR, verification of
CADs and PADs, configuration verification, and a daily inspection. CAD, PAD, and
configuration verifications are performed by visual external inspection and record examination
only. Disassembly beyond daily inspection requirements of applicable PM publications is not
required. Verify flight hours are correct on the Monthly Flight Summary (OPNAV 4790/21A)
by checking the Period and Since New blocks. In addition, verify correct operating hours on the
Equipment Operating Record (OPNAV 4790/31A) by checking the ACCUM block. Activities
may elect to increase inspection depth if the aircraft material condition or record examination
indicates such action is warranted. Aircraft transferred from a depot or commercial repair
activities require hydraulic fluid sampling prior to transfer.
h. TURNAROUND INSPECTION - An inspection conducted between flights to ensure
the integrity of the aircraft for flight, verifies proper servicing, and to detect degradation that may
have occurred during the previous flight.

i. ZONAL INSPECTION - A general inspection of a specific area of aircraft or SE at a

scheduled interval. These inspections are for obvious defects, such as leaks, frayed cables,
cracks, corrosion, or physical damage. Zonal inspections are normally performed in conjunction
with other scheduled maintenance tasks, by the rating assigned. For example, an AT rating
assigned to perform an inspection on a radar antenna might also be assigned a zonal inspection of
the entire compartment for obvious defects.
INSPECTIONS, SUPPORT EQUIPMENT (SE) -
a. ACCEPTANCE INSPECTION (SE) - An inspection performed at the time a reporting
custodian accepts a newly assigned item of SE or upon return from a depot or commercial repair
activity. It includes an inventory of all records and components that make up the item of SE,
configuration verification, a preoperational inspection as required by the applicable MRCs,
hydraulic fluid sampling, and a functional test. The activity receiving the item of SE may elect
to increase the depth of inspection if the SE condition indicates such action is warranted and
shall screen the item for any PM that may have come due during the time it was shipped.
b. PERIODIC INSPECTION - An inspection performed on a unit of SE, in both the static

and functional state, to detect defects that may have occurred since the last inspection. The
period for performance of these inspections is established in increments of weeks.
c. PREOPERATIONAL INSPECTION - A static or functional inspection, performed by

the activity having physical custody, to verify that a unit of SE is properly serviced and ready for
use. These inspections are performed prior to each use as specified on the MRCs.
d. TRANSFER INSPECTION (SE) - An inspection performed at the time a reporting
custodian transfers an item of SE on a permanent basis or upon return from a depot or
commercial repair activity. It includes an inventory of all records and components that make up
the item of SE, configuration verification, a preoperational inspection as required by the
applicable MRCs, and a functional test. The activity transferring the SE may elect to increase
the depth of inspection if the SE condition indicates such action is warranted and shall screen the
item for any PM that may have come due during the time it was shipped. SE transferred from a
depot or commercial repair activities require hydraulic fluid sampling prior to transfer.
e. ZONAL INSPECTION - A general inspection of a specific area of aircraft or SE at a
scheduled interval. These inspections are for obvious defects, such as leaks, frayed cables,
cracks, corrosion, or physical damage. Zonal inspections are normally performed in conjunction
with other scheduled maintenance tasks, by the rating assigned. For example, an AT rating
assigned to perform an inspection on a radar antenna might also be assigned a zonal inspection of
the entire compartment for obvious defects.

INSTRUCTIONS - Directives of a continuing nature that are effective until subsequently

canceled. Instructions use a subject classification numbering system per the Navy directives
system.
INTEGRATED LOGISTIC SUPPORT (ILS) - A composite of all the support considerations
necessary to ensure the effective and economical support of a system for its life cycle. It is an
integral part of all other aspects of system acquisition and operation. ILS is characterized by
harmony and coherence among all the logistic elements.
INTEGRATED LOGISTIC SUPPORT (ILS) MANAGER - The individual responsible for (1)
defining and executing an integrated support program for a weapon system or equipment
acquisition; (2) interpreting the operational concept of weapon systems and equipment for the
purpose of establishing ILS concepts, requirements, parameters, and constraints for inclusion in
appropriate basic planning documents, requests for proposal, contracts, and ILSPs; and (3)
accomplishing logistic support actions directly or assigning responsibilities for accomplishment
to individual element managers within or external to the organization.
INTEGRATED LOGISTIC SUPPORT PLAN/PROGRAM (ILSP) - The total comprehensive

plan, prepared by the contractor, for management and execution of the ILSP requirements. The
ILSP is the consolidation of all individual logistics support element plans into an interrelated,
interfaced, and phased program to provide effective and timely logistics support for a designated
aeronautical system/subsystem/component.
INTERCHANGEABLE ITEMS - Two or more items that have such functional and physical
characteristics as to be equivalent in performance and durability, and are capable of being
interchanged without alteration of the items themselves or of adjoining items except for
adjustment.
INTERDEPARTMENTAL/AGENCY SUPPORT - Provision of logistic/administrative support
in services or material by one or more military services to one or more departments or agency of
the U. S. Government (other than military) with or without reimbursement. See SERVICING.
INTERIM CHANGE - A change having an action classification of immediate or urgent and
issued by message. See CHANGE.
INTERMEDIATE MAINTENANCE ACTIVITY (IMA) - An aviation activity (ship or station)

authorized to provide I-level maintenance support. It consists of the aircraft maintenance,
supply, and weapons departments/divisions.

INTERSERVICE SUPPORT AND SERVICES - Action by one military service or element to

provide logistic/administrative support to another military service or element thereof. Such
action can be recurring or nonrecurring in character, on an installation, area, or worldwide basis.
INVENTORY CONTROL - The phase of military logistics that includes management,
cataloging, requirements determination, procurement, distribution, overhaul, and disposal of
material. Synonymous with material control, material management, inventory management, and
supply management.
INVENTORY CONTROL POINT (ICP) - An organizational unit or activity within a DOD
supply system, assigned the primary responsibility for the material management of a group of
items either for a particular service or for the DOD as a whole. Material inventory management
includes; cataloging directions, requirements computation, procurement direction, distribution
management, disposal direction, and general rebuild direction.
INVENTORY MANAGEMENT - See INVENTORY CONTROL.
INVENTORY MANAGERS - See INVENTORY CONTROL POINT (ICP).
INVESTIGATION - Inquiry into a condition or situation systematically for the purpose of
developing and providing factual information to cognizant authorities.
ITEM - Any level of hardware assembly, for example, segment of a system, subsystem,
equipment, or component part.
ITEM OF SUPPLY - An item that is used, bought, stocked, or distributed so that only one
distinctive combination of letters, numerals or both, identifies the same item throughout the
DOD.
ITEMS PROCESSED - This term identifies the total number of times an AT code is applied
toward a WUC.
JULIAN DATE - The year and numerical day of the year identified by four numeric characters.
The first character indicates the year and the remaining three characters specify the day of the
year, for example, 5210 indicates the 210th day of 1995 or 28 July 1995.
KIT - See PARTS KIT, PARTS KIT CODES, and QUICK ENGINE CHANGE (QEC).
LANDING - The controlled return of an aircraft in flight to the surface. It includes touch and
goes (carrier or field) providing the landing gear touches the surface. A bolter is an attempted
arrested landing on a carrier in which the landing gear or hook touches the deck but the arresting
gear is not engaged and the aircraft continues in flight.

LEAD MAINTENANCE TECHNOLOGY CENTER (LMTC) - An activity delegated the

authority and assigned responsibility to perform specified engineering and logistics functions for
developing and implementing maintenance processes and supportability requirements within a
particular technology area, for example, Aviation Gas Free Engineering, Elastomeric Materials,
Fluid Contamination, Paint and Organic Coatings, Materials Testing, Tires, and Welding. While
LMTCs may assist FSTs, they do not take the place of program FSTs, for example, FA-18, and
F110.
LEAD TIME - A composite of production, administrative (both contractor and government),
spares positioning, and shipping time.
LEVEL OF SUPPLY - The quantity of supplies or materials authorized or directed to be held in
anticipation of future demands. See OPERATING LEVEL OF SUPPLY, SAFETY LEVEL OF
SUPPLY, and STOCKAGE OBJECTIVE.
LIFE CYCLES - The total life span of an aeronautical system beginning with the concept
formulation phase and extending through the operational phase up to retirement from the
inventory.
LIQUID PENETRANT - Methods used for the detection of surface cracks or discontinuities.
The inspection surfaces are sprayed with or immersed in liquid, the excess liquid is removed, and
the defect is indicated visually by color or fluorescence. See NONDESTRUCTIVE
INSPECTION (NDI).
LOAN - Aircraft loaned to non-Navy organizations for non-Navy purposes. A lease may or may
not be required to cover the loan.
NOTE: Aircraft that are in the Navy inventory but not in the physical custody of the Navy
are either on bailment or on loan. Bailment indicates usage by the bailee for the Navy,
while loan indicates usage by the lesser for the lessee. See BAILMENT.
LOCAL ASSET MANAGEMENT SYSTEM (LAMS) - An automated MIS, which provides
standardized local management of IMRL assets through the use of bar code technology. It
provides for an accurate wall to wall inventory, which can be accomplished by unit personnel,
resulting in significant reductions of manpower expenditures and operational disruptions.
LOCAL PURCHASE - The function of acquiring a decentralized item of supply from sources
outside the DOD.

LOCAL REPAIR CYCLE ASSET (LRCA) - Any repairable item in an activity's OSI fixed
allowance for which local repair capability exists.
LOGBOOK, AIRCRAFT - See AIRCRAFT LOGBOOK.
LOGISTIC ELEMENT MANAGER - Systems command or other designated organizations or
activities responsible for the management of spares and repair parts, personnel, or facilities. A
logistic element manager has the ultimate objective of acquiring and distributing adequate
quantities of specific support items on a timely basis.
LOGISTICS - Military science in its planning and carrying out the movement and maintenance
of forces. For its most comprehensive sense, those aspects of military operations that deal with
design and development, acquisition, storage, movement, distribution, maintenance, evaluation,
and disposition of material; movement, evaluation, and hospital inspection of personnel;
acquisition or construction, maintenance, operation, and disposition of facilities; and acquisition
or furnishing of services.
LOGISTICS SUPPORT - The materials and services required to enable the operating forces to
operate, maintain, and repair the end item within the maintenance concept defined for that end
item. Logistics support encompasses the identification, selection, procurement, scheduling,
stocking, and distribution of spares, repair parts, facilities, SE, trainers, technical publications,
CETS, and personnel training as necessary to provide the operating forces with the capability
needed to keep the end item in a functioning status. See INTEGRATED LOGISTIC SUPPORT
(ILS).
LOGISTICS SUPPORT EQUIPMENT - Equipment used for the packaging, bulk handling,
storage/stowage, and transportation of weapons and weapon components. Some of these items
are categorized as materials handling equipment and ordnance handling equipment.
LONG LEAD TIME ITEMS - All parts for which the contractor, because of the length of time
needed to meet end article delivery schedules, considers it essential to have firm orders placed
prior to normal repair parts procurement schedules to permit delivery of the item to meet
operational support dates.
LOOK PHASE - The portion of an inspection that includes the basic requirements outlined by
the PMICs, excluding repair of discrepancies, that cannot be completed within the time allotted
on MRCs.

LOW CYCLE FATIGUE (LCF) - A fatigue cracking failure mode that is defined by the
frequency and characteristics of the loading that causes the crack. LCF is caused by stresses
built up by mechanical/thermal cycles which occur only a few times per flight. The four most
significant LCF events are: stop/start/stop cycles, rapid major changes in operating temperature,
rapid major changes in rotational speed, and significant increases in aerodynamic loading of the
blades/disks.
MACHINE RECORD - A collection of related data elements, in machine-sensible language,
treated as a unit of information. In maintenance data collection, a machine record is a segment
of magnetic tape.
MAGNETIC PARTICLE - A method that uses magnetic fields for the purpose of detecting fine
discontinuities at or near the surface of the part. This method is limited to ferromagnetic
materials. See NONDESTRUCTIVE INSPECTION (NDI).
MAINTAINABILITY - The ability to maintain an item in, or restore to, a specific operational
condition by expending resources, including man-hours, at an acceptable rate when using
prescribed procedures and resources.
MAINTENANCE - The function of retaining material in, or restoring it to, a serviceable
condition. Its phases include servicing, repair, modification, modernization, overhaul, rebuild,
test, reclamation, inspection, condition determination, and the initial provisioning of support
items. The term has a very general meaning, ranging from a matter of minutes of squadron
servicing, to a matter of months of industrial activity rework; the provision of maintenance
material itself is within the meaning. Maintenance should be qualified to convey a specific
meaning. See MAINTENANCE TYPES for distinctions in the scope of maintenance.
MAINTENANCE (MATERIAL) - All actions taken to retain material in a serviceable condition

or to restore it to serviceability. It includes inspection, testing, servicing, classification as to
serviceability, repair, rebuilding, and reclamation.
MAINTENANCE ACTION - Any one of a number of types of specific maintenance operations

necessary to retain an item in or restore it to a specified condition.
MAINTENANCE ACTION FORM (MAF) - A multi-purpose document used in the MDS and
the VIDS.

MAINTENANCE ACTIVITY - Any organization (activity or unit) of the naval establishment

assigned the mission, task, or functional responsibility of performing aircraft upkeep or rework.
Use of the term refers to organizations and personnel occupying aircraft maintenance facilities
and using aircraft maintenance material, but does not include reference to the facilities or
material themselves. Aircraft maintenance activities are classified as to levels of maintenance
performed. The highest level a particular activity is responsible for performing is established as
the activity's classification. This classification does not necessarily mean the activity involved is
responsible for all lower levels of maintenance. See AVIATION ACTIVITY.
MAINTENANCE ALLOCATION TABLE - Describes the function to be performed in the

repair of gas turbine engines, identifying the degree of repair.
MAINTENANCE CODE - Codes assigned to support items to indicate the maintenance levels
authorized to remove and replace, repair, overhaul, assemble, inspect and test, and condemn
items. Also assigned to maintenance tools and end items of SE to indicate the lowest level of
maintenance requiring the item. See SOURCE, MAINTENANCE, AND RECOVERABILITY
(SM&R) CODE.
MAINTENANCE CONCEPT - The planned or envisioned methods that will be employed to
sustain the aeronautical system/equipment at a defined level of readiness or in a specified
condition in support of the operational requirement. This includes significant aeronautical
system/equipment characteristics, for example, built-in test, compatibility with existing or
planned testing and SE, and a generalization of logistics support element requirements
(manpower, equipment, facilities, and workload distribution throughout the defined maintenance
level). The maintenance concept is initially stated by the government for design and support
planning purposes and provides the basis or point of departure for development of the plan to
maintain. The maintenance concept may be influenced or modified by economic, technical, or
logistics considerations as the design development of the aeronautical system/equipment
proceeds.
MAINTENANCE CONTROL - The functional organization within the OMA responsible for
workload control.
MAINTENANCE DEPARTMENT - The part of an activity responsible for the aircraft
maintenance functions, also considered a maintenance activity. In the shore establishment,
stations responsible for I-level maintenance will have maintenance departments. See
MAINTENANCE DIVISION/BRANCH.
MAINTENANCE DEPTHS - The complexity or extensiveness of aircraft maintenance
functions, for example, the extent of disassembly, the complexity of a test.

MAINTENANCE DETACHMENT - The part of an aircraft maintenance activity geographically

separated from but administered by the parent activity.
MAINTENANCE DIVISION/BRANCH - The part of an activity responsible for the activity's
aircraft maintenance functions; or the part of an aircraft maintenance department responsible for
a specific part of the department's functions, for example, repair of power plants. In the shore
establishment, stations responsible for only I-level and O-level maintenance will have
maintenance divisions of operations or air departments. See MAINTENANCE DEPARTMENT.
MAINTENANCE ENGINEERING - The discipline of maintenance which develops concepts,
criteria, and technical requirements during the conceptual and acquisition phases to be applied
and maintained in a current status during the operational phase to ensure timely, adequate, and
economic maintenance support of weapon systems and equipment.
MAINTENANCE ENGINEERING ANALYSIS - The composite analytical studies, decisions,
and related documentation conducted in connection with the design of an item to determine or
influence the maintainability and reliability characteristics of the item and to determine the total
support requirements resulting from the design. For new items, the analysis is conducted
concurrently with the design process. For existing or off-the-shelf items, the analysis is
conducted as required to determine the characteristics and resulting support requirements.
MAINTENANCE FACILITY - Any building, property, or space designed for, available to, or
used by aircraft maintenance activities. Use of the term refers to shops, hangars, or parking
areas, both afloat and ashore, used primarily for aircraft upkeep or rework purposes. Use of the
term does not refer to the organization's personnel, responsibilities, or material (except installed
aircraft SE). Aircraft maintenance facilities are classified by the levels of maintenance they are
designed for or used to support. The highest level is established as the facility's classification.
This classification does not necessarily indicate the facility involved includes facilities for all the
lower levels of maintenance. See MAINTENANCE FACILITY MODULE.
NOTE: The term aircraft maintenance facility includes installed aircraft SE when applied
to Navy facilities. When applied to Marine Corps facilities, it does not.
MAINTENANCE FACILITY MODULE - Standard design increments of aircraft maintenance
facilities that permit the construction of a facility without additional design other than that of site
adaptation and orientation. There will be two standard modules for use within the naval
establishment; intermediate and organizational as required by the functional responsibility of the
aircraft maintenance activity or activities that will be the tenant(s) of the facility involved.

MAINTENANCE FUNCTIONS - A detailed statement of the aircraft maintenance work of each

aircraft maintenance level. Maintenance functions stem from maintenance tasks, are assigned by
COMNAVAIRSYSCOM, and are classified as to the aircraft maintenance levels to which they
apply.
MAINTENANCE INSTRUCTIONS MANUAL (MIM) - Contains instructions for O-level, I-
level, and D-level maintenance and servicing of a specific weapon system and related airborne
equipment including SE.
MAINTENANCE LEVELS - Maintenance tasks divided into the number of levels required so
common standards can be applied to the many and varied aircraft maintenance activities of the
military establishment. They are increments of which all maintenance activities are composed.
JOINT PUB-1-02 defines the three levels as depot, intermediate, and organizational.
a. D-LEVEL MAINTENANCE - Maintenance done on material requiring major rework
or a complete rebuild of parts, assemblies, subassemblies, and end items, including manufacture,
modification, testing, and reclamation of parts as required. D-level maintenance serves to
support lower levels of maintenance by providing technical assistance and performing
maintenance beyond the responsibility of O-level and I-level maintenance. D-level maintenance
provides stocks of serviceable equipment by using more extensive facilities for repair than are
available in lower level maintenance activities.
b. I-LEVEL MAINTENANCE - Maintenance that is the responsibility of, and performed
by, designated maintenance activities for direct support of using organizations. Its phases
normally consist of calibration, repair or replacement of damaged or unserviceable parts,
components, or assemblies; the emergency manufacture of non-available parts; and the provision
of technical assistance to using organizations.
c. O-LEVEL MAINTENANCE - Maintenance that is the responsibility of, and
performed by, a using organization on its assigned equipment. Its phases normally consist of
inspecting, servicing, lubricating, adjusting, and replacing parts, minor assemblies, and
subassemblies.
MAINTENANCE MANAGEMENT - The process of planning, organizing, staffing, directing,

and controlling organic industrial resources required for physically performing equipment
maintenance.
MAINTENANCE PERFORMANCE DATA - Data relating to the use and application of the
work force, industrial equipment, and dollars to sustain weapons and end item equipments in an
operational status.

MAINTENANCE PLAN - A document containing technical data, tailored to a specific weapon

system maintenance concept, which identifies maintenance and support resource requirements to
maintain aeronautical systems, equipment, and SE in an operationally ready state. The
maintenance plan provides the interface between maintenance engineering and supply for
provisioning purposes and communicates inputs to enable other logistic element managers to
develop their hardware support requirements. The maintenance plan is designed as a tool for the
shore community for integrated logistic support planning and is prepared per NAVAIRINST
4790.22.
MAINTENANCE PLANNING - The design, method, or scheme for accomplishing an aircraft

mission or reaching an aircraft maintenance objective or objectives.
MAINTENANCE PROCEDURES - Established methods for periodic checking and servicing of
items to prevent failure or to affect a repair.
MAINTENANCE PRODUCTION - The activity of equipment maintenance involving the
physical performance of those actions and tasks attendant to the equipment maintenance function
for servicing, repairing, testing, overhaul, modification, calibration, modernization, conversion,
inspection, etc. The accomplishment of these tasks is normally carried out at O-level, I-level,
and D-level maintenance activities.
MAINTENANCE PRODUCTION MANAGEMENT - The process of planning, organizing,

staffing, directing, and controlling organic industrial resources engaged in the physical
performance of equipment maintenance. See MAINTENANCE PRODUCTION.
MAINTENANCE QA - The actions by which it is determined material maintained, overhauled,
reworked, modified, and reclaimed conforms to the prescribed technical requirements. See
AUDIT and QUALITY ASSURANCE (QA).
MAINTENANCE REQUIREMENTS CARD (MRC) - Card sets issued by
COMNAVAIRSYSCOM containing scheduled maintenance requirements applicable to I-level
and O-level activities for the specific aircraft/SE for which they are issued. See PERIODIC
MAINTENANCE INFORMATION CARD (PMIC).
MAINTENANCE RESOURCES - Personnel, materials, tools, equipment, facilities, technical
data, and dollars provided to carry out the equipment maintenance mission.
MAINTENANCE SCHEDULE - A plan of procedures for carrying out specific jobs or projects
in a maintenance activity's maintenance program; fixing the time when operations are to begin or
be completed.

MAINTENANCE STATUS - The classification or condition of equipment undergoing

preventive/ restorative action.
MAINTENANCE STATUS DISPLAY AND RECORDING SYSTEM - Monitors engine and
airframe operational status for unit failures, cautions, and advisory conditions and sends this
information to the mission computer system for processing on selected aircraft.
MAINTENANCE TASK - Incremental maintenance elements performed by maintenance
personnel in completing a maintenance action.
MAINTENANCE TECHNOLOGY - The specific application of engineering and science to

develop techniques, procedures, and directives for the maintenance and support of aviation
systems.
a. ADHESIVE BONDING - Adhesive material application and the associated preparation

and post-bonding procedures. Includes testing and evaluating to understand properties pertaining
to structural adhesives, nonstructural adhesives, adhesive bond strength and durability, adhesive
substitutions, and ambient temperature storable adhesives.
b. AIRBORNE WEAPONS AND TARGETS MAINTENANCE - The activities and
related technology required to repair and renovate airborne weapons and targets and their
associated SE.
c. AIRBORNE WEAPONS MATERIALS - Research, support, development, testing, and
evaluation of materials and associated processes used in airborne weapons. Included are tests for
environmentally compliant materials and processes, for example, ozone depleting substance
replacements; energetic materials, for example, warheads, rocket motors, and fuzzes;
composites, polymers, and plastics; metals and metal alloys; welding, brazing, and soldering;
coatings, paints, and corrosion preventive compounds; adhesives and bonding agents; ceramics,
optical windows, and missile domes; and electronic materials.
d. AIRCRAFT WIRING - The maintenance, design, engineering evaluation, logistics,
testing, evaluation, and manufacture of aircraft wiring systems and components.
e. AVIATION GAS FREE ENGINEERING - Encompasses comprehensive engineering
support to ensure the safety of all personnel involved with the handling and repair of aircraft and
SE fuel cells and tanks.

f. BEARINGS - Refurbishment (repair) of bearings. A large percentage of bearing

refurbishment involves the mixing of piece-parts from different bearings of the same part
number. The piece-parts may be new or may have been remanufactured using existing
manufacturing processes modified for application in bearing remanufacturing. Typical
remanufacturing processes include grinding mounting surfaces, micro-honing raceways, and
plating retainers.
g. CANOPIES/TRANSPARENCIES - The refurbishing of transparent, plastic, and glass
aircraft enclosures.
h. COMPOSITE REPAIR - The assessment of damaged composite parts and
implementation of quality repairs through design, materials, testing, techniques, and processes
necessary to successfully restore the part to its original design capabilities. This includes
inspection and characterization of damaged material, design, and analysis of appropriate repair
joint, determination of adequate materials and processing, and fabrication of the repair.
i. CORROSION PREVENTION/CONTROL - The protection of operational aircraft and
SE systems from material corrosion through corrective and preventive maintenance actions. The
protection of systems is provided by, but not limited to, cleaning, inspections, corrosion removal
and surface treatment, sealants, surface coatings, materials and processes selection, and
emergency reclamation.
j. ELASTOMERIC MATERIALS - Items made of rubber and rubber-like materials
including, but not limited to, fuel cells, o-rings, hoses, gaskets, seals, potting and sealing
compounds, and protective elastomeric coatings.
k. ELECTROCHEMICAL POWER SYSTEMS (BATTERIES) - The activities and
related technology required to manufacture, rework, maintain, and improve batteries for fleet
support.
l. ENGINE BLADE/VANE REPAIR - Identifying, development, and implementation of
repairs on DOD gas turbine engine components.
m. ENGINE COMPOSITES - The general Logistics Research and Development for the
maintenance of composites on engines.
n. ENVIRONMENTAL - Maintenance processes and procurement actions to
reduce/eliminate environmental pollutants.

o. FAILURE ANALYSIS - Engineering analysis of metallic materials to determine

casual factors predisposing assemblies to malfunction. Factors such as deficiencies in design and
material selection manufacture and repair procedures, errors in assembly, and corrosion
identification and control are considered.
p. FLUID CONTAMINATION - The characterization of dielectric coolants, hydraulic
fluids, and engine lubricants for physical or chemical contamination as it reflects the operational
condition of aircraft systems, components, and SE.
q. FUELS/LUBRICANTS - Life cycle support of fuels, lubricants, and associated
handling and quality control equipment used for Naval aviation, including turbine engine fuels;
turbine engine lubricants; piston engine lubricants; helicopter gearbox oils; fuel additives (fuel
system icing inhibitor, corrosion inhibitor, antioxidant, metal deactivator); fuel filtration
equipment (coalescers, separators, monitors, housings); fuel quality assurance equipment;
aircraft fuel filters; refueling trucks/equipment; lubricant usage instruction; and fuel/refueling
NATOPS manuals.
r. HEAT DAMAGE EVALUATION - The controlled addition of heat to/removal of heat

from raw materials and aircraft components.
s. HEAT TREATING - The controlled addition of heat to/removal of heat from raw
materials and aircraft components.
t. INORGANIC COATINGS - The various methods of coating applications and the
physical and mechanical properties of various coatings. Inorganic coatings are defined as those
metallic and inter-metallic coatings applied to metallic substrates for dimensional restorations,
corrosion protection, wear, etc. Examples include chromium plating, cadmium plating, physical
vapor deposition, and ion vapor deposited aluminum. This technology is used to address the
environmental issues pertaining to inorganic coatings, and the effectiveness of metallic and inter-
metallic coatings applied to metal and non-metal substrates for corrosion, erosion and wear
protection.
u. MATERIALS TESTING - Mechanical testing and chemical analysis of material.
Mechanical testing is the method by which the mechanical properties of a material are
determined. Mechanical properties are properties of a material that reveal its elastic and inelastic
behavior when force is applied. This indicates its suitability for mechanical applications, for
example, modulus of elasticity, tensile strength, elongation, hardness, and fatigue limits.
Chemical analysis is the characterization of a substance by definite molecular composition.

v. NONDESTRUCTIVE TESTING/INSPECTION - The technologies (methods) for

determining characteristics about the physical condition of a part of material, without
permanently changing it. NDI is the application of nondestructive testing to the inspection of
parts, structure, and material to determine condition and/or serviceability. Typical defects and
conditions to be detected are those not detectable visually, like fatigue and stress corrosion
cracks, inclusions, porosity, delaminations, disbonds, enclosed FOD, etc. The most frequently
used nondestructive testing methods are Dye Penetrant, Magnetic Particle, Eddy Current,
Ultrasonics and X-Radiography. Methods used less frequently in the aircraft industry include
thermal imaging, gamma and neutron radiography, and acoustic emission.
w. PAINT/ORGANIC COATINGS - The application of materials on surfaces for the
purposes of corrosion prevention, resistance to high-temperature scaling, wear resistance,
lubrication, or other purposes. Application includes aircraft final paint, component paint, engine
finish, avionics paint, oxygen and compressed gas system paint, and corrosion control.
x. PRESERVATION - The protection of aviation assets (aircraft, SE and mobile

facilities) from material degradation during periods of inactivity, storage, or shipment.
y. THERMAL SPRAY - The process by which finely divided material in a molten (or
semi-molten) condition is sprayed onto a substrate to form a coating. Feedstocks are in the form
of powder, wire, or rod.
z. TIRES - The maintenance, performance, improvements, logistic support, and
qualification of new sources for naval aviation.
aa. TRIBOLOGY - The design, friction, lubrication, and wear of contacting surfaces that
move relative to each other. Examples include bearings, cams, and gears.
ab. VIBRATION ANALYSIS - The technology to detect, quantify, and eliminate defects
in airframes, engines, and dynamic components for fixed and rotary wing aircraft. Application
may be in troubleshooting or scheduled maintenance.
ac. WELDING/BRAZING - A process used to join metals by the application of heat.
Fusion welding includes, but is not limited to, oxyfuel welding, shielded metal arc welding, gas
tungsten arc welding, gas metal arc welding, plasma arc welding, and electron beam welding.
MAINTENANCE TRAINING IMPROVEMENT PROGRAM (MTIP) - A training management
program, which identifies individual technical knowledge levels and training resources to resolve
noted deficiencies.

MAINTENANCE TRAINING REQUIREMENTS REVIEW (MTRR) - A CNO sponsored

review of designated weapon system training courses, which identifies training track, course,
NEC or MOS, and curriculum deficiencies. The MTRR initiates corrective action and
establishes tailored training tracks for enlisted aviation billets.
MAINTENANCE TRAINING UNIT (MTU) - An en-route training program for specific weapon
systems or equipment designated courses that provides training in familiarization, operation, and
maintenance of the weapon system to be maintained in formal classrooms and practical
application experience.
MAINTENANCE TYPES - Rework and upkeep are the two basic types of aircraft maintenance
performed within the naval establishment without distinction as to levels of maintenance.
Rework is performed only in the shore establishment. It may be performed on any program
aircraft (operating or non-operating), aircraft equipment, or aircraft SE. It is performed only by
industrial type activities assigned the mission, task, or functional responsibility of providing
maintenance program support. Rework is performed with both military and civilian personnel
and is managed by the COMNAVAIRSYSCOM. Upkeep is performed only on operating
aircraft, aircraft equipment, or aircraft SE. It is performed by military type activities assigned
aircraft or equipment or assigned the mission, task, or functional responsibility of providing
direct support to such activities. Upkeep is normally performed with military personnel and is
managed by major operating commands. See REWORK and UPKEEP.
MAJOR DEFECT - See DEFECT.
MAJOR ENGINE INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
MALFUNCTION (MAL) DESCRIPTION CODE - A three-character numeric or alphanumeric
code used to describe the malfunction occurring on or in an item identified by a WUC.
MANAGEMENT - A general term to denote central executive direction and control of work by
an individual or organization specifically assigned and funded to accomplish the function.
MANAGEMENT AUDIT - A periodic assessment of a command's managerial planning,
organizing, actuating, and controlling compared to what might be the norm of successful
operation. Management auditors do not appraise individual performance.
MANAGEMENT INFORMATION SYSTEM (S) (MIS) - Manual or automated techniques,
makes information available for all echelons of management upon which to base management
decisions.

MAN-HOURS - The total number of accumulated direct labor hours (in hours and tenths)
expended in performing a maintenance action. Direct maintenance man-hours are man-hours
expended by assigned personnel to complete the work described on the source document. This
includes the functions of preparation, inspection, disassembly, adjustment, fault correction,
replacement or reassembly of parts, and calibration/tests required in restoring the item to a
serviceable status. It also includes such associated tasks as checking out and returning tools,
looking up part numbers in the IPB, transmitting required information to material control, and
completing documentation of the MAF.
MAN-MOUNTED EQUIPMENT - Equipment used to provide overall protection and comfort to

the aircrew under various flight, emergency, and environmental conditions.
MANUFACTURER - Individual, company, firm, corporation, or government activity engaged in
the fabrication of finished or semi-finished products.
MANUFACTURER CODE - See COMMERCIAL AND GOVERNMENT ENTITY (CAGE).
MANUFACTURER PART NUMBER - See REFERENCE NUMBER.
MARINE AVIATION LOGISTIC SQUADRON (MALS) - The unit or activity within a MAG
assigned the mission of providing I-level support to the squadrons of the MAG.
MARINE AVIATION LOGISTICS SUPPORT PROGRAM (MALSP) - Provides the framework

within which a variety of concepts, programs and allowances are developed to support each
T/M/S aircraft that could be used to form the aviation combat element of a MAGTF. The focus
of the MALSP is to identify and integrate the personnel, SE, mobile facilities or shelters, and
repair or spare parts required to sustain a MAGTF aviation combat element.
MASTER REPAIRABLE ITEM LIST (MRIL) - A listing, in NIIN sequence, of all repairable
assemblies, indicating the DRP (Navy or commercial) and provides shipping instructions for
these assemblies when they become defective. This list is published as NAVSUP Publication
4107.
MATCHED SET - A group of two or more separate components that function together in a
single system and are normally removed, repaired, checked, adjusted, calibrated, and installed
together. Replacement of a single component of a matched system normally requires
check/adjustment/calibration of the matched set.
MATERIAL - All items necessary for the equipment, maintenance, and support of military
activities without distinction as to their application for administrative or combat purposes,
excluding ships or naval aircraft.

MATERIAL CONDITION - Reporting status with respect to SCIR. See MISSION CAPABLE
(MC), OPTIMUM PERFORMANCE CAPABLE (OPC), FULL MISSION CAPABLE (FMC),
PARTIAL MISSION CAPABLE (PMC), and NOT MISSION CAPABLE (NMC).
MATERIAL CONTROL - See INVENTORY CONTROL.
MATERIAL CONTROL CODE (MCC) - A single alphabetic character assigned by the

inventory manager to segregate items into more manageable groupings (fast, medium, or slow
movers) or to relate to field activities special reporting/control requirements.
MATERIAL CONTROL REGISTER - A register established to record all requisitions for

material passed to the Supply Support Center.
MATERIAL HANDLING EQUIPMENT (MHE) - Commercially available industrial
equipment, such as forklifts, warehouse tractors, pallet trucks, and platform trucks. Some of
these items are approved for use in ammunition and explosive ordnance handling operations, and
are a category of logistic SE.
MATERIAL MANAGEMENT - See INVENTORY CONTROL.

MATERIAL REPORTING (MR) - The procedure whereby all supply action documents in
support of maintenance are key entered.
MATERIAL REQUIREMENTS - Those quantities of items of equipment and supplies necessary
to equip, provide a material pipeline, and sustain a service, formation, organization, or unit in the
fulfillment of its purpose or task during a specified period.
MEAN TIME BETWEEN FAILURES - The total functioning life of a population of an item
divided by the total number of failures within the population during the measurement interval.
The definition holds for time, cycles, miles, events or other measure of life units.
MEASURE OPERATIONAL CONTROL CENTER (MOCC) - The Atlantic and Pacific
terminals of the MEASURE automated information system network. These centers maintain
data files for respective area customers and MEASURE participants. Products, as may be
required, are produced and distributed via telecommunications, hard copy, or tape to elements of
the distributed network and various agencies on a regular or as required basis.
METER READING - Meter readings apply to only those items that have a clock/meter installed.
Readings will be in time, cycles, or starts to the nearest whole number.
METROLOGY - The science of measurement or determination of conformance to technical
requirements including the development of standards and systems for absolute and relative
measurements. See CALIBRATION and MEASURE.

METROLOGY AUTOMATED SYSTEM FOR UNIFORM RECALL AND REPORTING

(MEASURE) - A metrology system for the recall and reporting of test equipment by means of
ADP techniques, maintains records of calibration and automatically recalls items when due for
calibration. See CUSTOMER ACTIVITY, FIELD CALIBRATION ACTIVITY (FCA),
FORMATS, METER CARD, and SUBCUSTODIAN.
METROLOGY EQUIPMENT RECALL (METER) CARD - Source document used to update
the MEASURE. All actions to PME/TAMS are reported to MEASURE via METER Cards.
MILITARY STANDARD REQUISITIONING AND ISSUE PROCEDURE (MILSTRIP) - A
uniform procedure established by the DOD for its own use to govern requisition and issue of
material within standard priorities.
MILITARY STANDARD TRANSPORTATION AND MOVEMENT PROCEDURES
(MILSTRAP) - A procedure to enlarge MILSTRIP by extending the uniform communicating
procedures, codes, forms, and formats for the transmission of items and the financial inventory
data.
MINOR DEFECT - See DEFECT.
MISHAP, AIRCRAFT - A naval aircraft mishap is an unplanned event or series of events,

directly involving naval aircraft which result in ten thousand dollars or greater cumulative
damage to naval aircraft, other aircraft DOD or non-DOD) and property (DOD or non-DOD).
Property damage includes costs to repair or replace facilities, equipment or material; or an injury
as defined in OPNAVINST 3750.6.
MISSILE AIRFRAME - The assembled, principal structural components less propulsion system,
control system, electronic equipment, and payload.
MISSILE TARGETS - All recoverable and non-recoverable, remotely controlled or
programmed, unmanned aerial target vehicles; also remotely controlled or programmed powered
land target and target boats, but excludes drones.
MISSION -
a. The objective; the task together with the purpose, which clearly indicates the action to
be taken and the reason for it;
b. In common usage, especially when applied to lower military units, a duty/task assigned
to an individual; and
c. The dispatching of one or more aircraft to accomplish one particular task.

MISSION CAPABLE (MC) - Material condition of an aircraft that can perform at least one and
potentially all of its missions. MC Hours = EIS Hours - NMC Hours.
MISSION ESSENTIAL - Anything authorized and assigned to the approved combat and combat
support forces, which would be immediately employed to wage war and provide support for
combat actions.
MISSION ESSENTIAL SUBSYSTEM - Subsystems of an aircraft required to perform the
designated missions as determined by use of the applicable MESM.
MISSION-ESSENTIAL SUBSYSTEM MATRICIES (MESM) - Published in OPNAVINST

5442.4, lists, for each model, the equipment systems/subsystems that must be on board and in
working order before an aircraft can qualify as mission ready.
MOBILE FACILITY (MF) - A relocatable tactical shelter and its related equipment. The
principle application in naval aviation of an MF is to provide relocatable housing for aviation
weapon systems and SE maintenance and related functions. They may be used on board ship as
well as ashore.
MODEL DESIGNATION - Each Navy aircraft is designated by a combination of significant
letters and numbers per the system contained in OPNAVINST 13100.1. The designation
generally indicates the type and mission capability of the aircraft, for example, P-3C.
MODULAR ENGINES - Engines consisting of several independent assemblies called modules,
which by design can be removed/replaced without major disassembly of the engine or other
modules, for example, compressor, combustion, turbine, afterburner, gearbox, torquemeter, or
combination thereof.
NAMDRP CLEARINGHOUSE - COMNAVAIRSYSCOM (AIR-4.1) has established a

NAMDRP clearinghouse to oversee the NAMDRP, process, and interface between the
discrepancy reporting activities and the FST. The function of the clearinghouse is to monitor the
performance of the EI process, and help fleet activities resolve problems with specific
discrepancy reports.
NAMDRP TOOL KIT - An electronic support system accessed via the https://ei.navair.navy.mil
web site. The tool kit is designed to be used by program FST, COMNAVAIRSYSCOM
Program Managers, private sector contractors, and fleet users to process exhibits and disseminate
data and documentation pertinent to the NAMDRP process. This integrated approach ensures all
personnel providing support to applicable programs have enough available information to
enhance decision making at all levels. The tool kit implements state-of-the-art methods and tools
for providing information, management philosophy, design methods, cost trade-off analysis, and
modeling concepts to significantly improve the effectiveness of processing exhibits.

NATIONAL ITEM IDENTIFICATION NUMBER (NIIN) - A two-digit National Codification

Bureau code combined with seven other digits. See NATIONAL STOCK NUMBER (NSN).
NATIONAL STOCK NUMBER (NSN) - A 13-digit number consisting of the four-digit FSC
and the nine-digit NIIN. Component segments of NSN 5330-00-123-4567 are identified as (a)
FSC: 5330; and (b) NIIN: 00-123-4567.
NAVAL AIR MAINTENANCE TRAINING GROUP (NAMTRAGRU) - An organization under
the military command of CNET responsible for providing, by means of the
NAMTRAGRUDETs, technical training for officers and enlisted personnel in the operation,
maintenance, and repair of air weapons systems and associated equipment; and for conducting
such other training as the CNO may direct.
NAVAL AIR MAINTENANCE TRAINING GROUP DETACHMENT (NAMTRAGRUDET) -
A group of instructors equipped with naval air maintenance trainer(s), training aids, lesson
guides, and training literature.
NAVAL AIR TRAINING AND OPERATING PROCEDURES STANDARDIZATION
(NATOPS) MANUAL - A manual of general flight and operating instructions applicable within
the naval aviation establishment issued for individual aircraft which are intended to complement
OPNAVINST 3710.7.
NAVAL AVIATION LOGISTICS COMMAND MANAGEMENT INFORMATION SYSTEM
(NALCOMIS) ORGANIZATIONAL LEVEL MAINTENANCE ACTIVITY (OMA) - A
modern, real time, on-line responsive computer based automated MIS, allows Navy and Marine
Corps aviation maintenance unit personnel to record flight and maintenance actions. O-level
maintenance managers can use this data to quickly obtain timely and accurate aircraft and
equipment maintenance status, scheduled maintenance requirements and additional information
required in their day-to-day management and decision making process.
NAVAL AVIATION LOGISTICS DATA ANALYSIS (NALDA) - An automated database and
information retrieval system for aviation logistics management and technical decision support.
Analysis capability is provided through interactive query and batch processing from remote
terminals. NALDA assists users in making improved decisions affecting fleet aircraft readiness.
Users can define, identify, and isolate logistics problem areas from a centralized data bank of
integrated aviation logistics information.
NAVAL AVIATION MAINTENANCE PROGRAM STANDARD OPERATING

PROCEDURES (NAMPSOP) - Standard operating procedures for maintenance programs and
processes that provides standard procedures in sufficient detail to not require additional
instructions written below COMNAVAIRSYSCOM level (with the exception of Local
Command Procedures (Volume V, Appendix E)).

NAVAL ESTABLISHMENT - Comprised of the Navy Department, Shore Establishment, and

the Operating Forces of the Navy and the Operating Forces of the Marine Corps. Synonymous
with DON.
NAVY DEPARTMENT - Refers to the central executive offices of the DON located at the seat
of government. The Navy Department is organizationally comprised of the Office of the
Secretary of the Navy, which includes Civilian Executive Assistants, Office of Staff Assistants,
and the headquarters organizations of the Office of Naval Research, the Office of the Judge
Advocate General, and the ASN(FM/C) of the Navy; the Office of the CNO, the Headquarters,
Marine Corps; and, under the command of the CNO, the headquarters organizations of the Chief
of Naval Personnel and the Chief, Bureau of Medicine and Surgery. In addition, the
Headquarters, Coast Guard, is included when the United States Coast Guard is operating as a
service in the Navy.
NAVY DIRECTIVES SYSTEM - Consists of instructions and notices employing the standard
subject identification code numbering system for identification and filing purposes. The system
is used throughout the Navy for issuing directives on policy, organization, administrative
methods, or procedures.
NAVY INTEGRATED TRAINING RESOURCES AND ADMINISTRATION SYSTEM

(NITRAS) - An automated system responsive to training information requirements from higher
commands, provides automated capability to manage and support the training effort throughout
the Navy.
NAVY TRAINING SUPPORT PLAN (NTSP) - The official statement of billets, personnel, and
training input and resource requirements to support introduction and operational use of aircraft,
systems, subsystems, equipments, and other developments. The NTP assigns responsibilities for
planning, programming, and implementing actions necessary to provide the required support.
NAVY WORKING CAPITAL FUND (NWCF) - A working capital fund (revolving fund)
established with the goal of recovering enough money from sales to replace sold material, used
to finance the procurement and repair of secondary item inventories (including repairables),
which will eventually be charged to the customer's end use funds. In addition to purchasing
expense items to be centrally managed by NAVICPs, the NWCF is also the funding mechanism
by which the Navy acquires DLA or GSA managed expense items and places them in Navy retail
inventory.
NEW PRODUCTION AIRCRAFT - Aircraft without regard to model or configuration that are
in the first year of operational use by the fleet or training commands and not deployed aboard
ships or overseas.

NONAVIATION SHIP - For NAMP purposes, ships not designated as Aviation Ship, such as
CG, FFG, AFS, DD. Non-aviation ships may be air or aviation capable.
NONAVIONICS SE – Non-avionics SE (common and peculiar) includes all equipment that is
non-electronic in nature and may be powered or non-powered. Examples of powered equipment
are: mobile electric power plants, gas turbine powered service equipment, aircraft tow tractors,
and hydraulic service units. Examples of non-powered equipment are aircraft jacks, aircraft tow
bars, aircraft slings, maintenance work stands, special fittings and fixtures.
NONDESTRUCTIVE INSPECTION (NDI) - Methods that may be applied to a structure or
component to determine its integrity, composition, physical, electrical, thermal properties, or
dimensions without causing a change in any of these characteristics. See VISUAL OR
OPTICAL INSPECTION, LIQUID PENETRANT, EDDY CURRENT, MAGNETIC
PARTICLE, ULTRASONIC, and RADIOGRAPHIC for NDI methods in existence.
NONOPERATING AIRCRAFT - Any aircraft, for the purpose of flight operations, not currently
filling an authorized allowance in an organizational unit. See OPERATING AIRCRAFT.
NOT MISSION CAPABLE (NMC) - Material condition of an aircraft that is not capable of
performing any of its missions. NMC is subdivided into NMCM and NMCS. NMC Hours = EIS
Hours - MC Hours.
NOT MISSION CAPABLE MAINTENANCE (NMCM) - The material condition of an aircraft
that is not capable of performing any of its missions because of maintenance requirements. Start
NMCM time when the condition is discovered except when the discovery is made in flight. In
flight malfunction NMCM time starts at the termination of flight. Stop NMCM when
maintenance is completed or interrupted by a supply shortage. Report work stoppage resulting
from parts non-availability as NMCS. NMCM time resumes when required supply item(s) are
delivered to the maintenance activity. NMCM is further defined as NMCM scheduled (S) and
NMCM unscheduled (U). NMCM Hours = NMC Hours - NMCS Hours. See NOT MISSION
CAPABLE (NMC), NOT MISSION CAPABLE MAINTENANCE SCHEDULED (NMCMS),
and NOT MISSION CAPABLE MAINTENANCE UNSCHEDULED (NMCMU).
NOT MISSION CAPABLE MAINTENANCE SCHEDULED (NMCMS) - The sum of

equipment maintenance hours documented for scheduled engine inspections, special inspections,
phase/calendar inspections and conditional inspections. An aircraft will be considered NMCMS
if panels and equipment removed to conduct area inspections cannot be replaced within 2 hours
or if the aircraft has been utilized to the maximum allowable operating limit prior to the
scheduled maintenance requirement, for example, +10 percent, +3 days. NMCMS Hours =
NMCM Hours - NMCMU Hours. See NOT MISSION CAPABLE (NMC).

NOT MISSION CAPABLE MAINTENANCE UNSCHEDULED (NMCMU) - Sum of

maintenance not defined as scheduled maintenance, occurring during the interval between
scheduled downtime maintenance periods. NMCMU Hours = NMCM Hours - NMCMS Hours.
NOT MISSION CAPABLE SUPPLY (NMCS) - The material condition of an aircraft that is not
capable of performing any of its missions because maintenance required correcting the
discrepancy cannot continue due to a supply shortage. Start NMCS time when a supply demand
has been made for an item(s) required to continue maintenance. Stop NMCS time at the time the
material is delivered to the designated delivery point or change of EOC code. NMCS Hours =
NMC Hours - NMCM Hours. See NOT MISSION CAPABLE (NMC).
NOTICES - Directives of a one-time nature or those applicable for a brief period of time. Each
notice contains provisions for its own cancellation. Notices employ a subject classification
numbering system and are part of the Navy directive system.
OBJECTIVE QUALITY EVIDENCE - Examples of objective quality evidence are: (1)
statistically sound process control charts; (2) records of functional tests, operational checks,
interchangeability checks, and other tests or demonstrations; and (3) records of product
certification at various states of processing or fabrication, so presented that they can be analyzed
and verified.
a. OBJECTIVE - When the quality evidence is of a kind that can be fully checked
(verified), such information is said to be objective. Any statements of fact, which are pertinent to
the quality of a product and based on observation, measurements, or tests, which can be verified,
constitute evidence, which is objective.
b. QUALITY - The quality of any material is defined as the inherent or acquired
characteristics of an item which, when measured against a standard or model, establish the
degree of conformance of the item to the standard or model. These characteristics are identified
in technical orders, drawings, or other standards, which describe the material. Material is of
acceptable quality when it conforms to those established standards. Material is discrepant when
it fails to conform to any characteristics as defined in the standards.

c. EVIDENCE - Evidence is any information by which a statement or an observation may

be proven to be true. Evidence must be expressed in terms of specific characteristics pertinent to
the acceptability of a product. The methods of obtaining and presenting this evidence must be
accurate and based on facts. Unless attention is focused on those particular characteristics to
determine acceptability and unless the methods of observation (whether by visual inspection or
by measurements) are valid, it is impossible to make an accurate evaluation of the quality of a
product. Ordinarily an observation or measurement is considered valid when it can be duplicated.
This is a general rule, but there are exceptions; for example, data obtained from a destructive test
may be valid; however, the test itself cannot be duplicated.
OFF-EQUIPMENT WORK - For the purpose of MDR, it includes all maintenance actions
performed on removed, repairable components, usually at the IMA.
ON-CONDITION TASK - A scheduled inspection to determine that equipment is and will

remain in satisfactory condition until the next scheduled inspection.
ON-EQUIPMENT WORK - For the purpose of MDR, it includes those maintenance actions
accomplished on complete end items, for example, aircraft, drones, SE, and removed engines.
ON-JOB-TRAINING (OJT) - Training at the squadron or other local activity level in the
performance of a task or duty during operational or maintenance situations.
IC-1 OPERATING AIRCRAFT - An aircraft filling an authorized operating allowance. An
aircraft reported in any of the A-status codes is in an operating status. Operating status aircraft
are always in the reporting and physical custody of the operating unit to which assigned. An
aircraft that moves to a rework facility for purposes of rework will leave operating status
although it may remain in the reporting custody of the operating unit. Operating aircraft are in
material condition reporting status.
OPERATING COMMAND - A controlling custodian of naval aircraft, except
COMNAVAIRSYSCOM FS. Also called air or major operating command.
OPERATING FORCES - Those forces whose primary missions are to participate in combat and
the integral supporting elements.
OPERATING LEVEL OF SUPPLY - The quantities of material required to sustain operations in
the interval between requisitioning and the arrival of successive shipments. These quantities
should be based on the established replenishment period (monthly or quarterly). See LEVEL OF
SUPPLY.
OPERATING SERVICE AGE - The number of OSM an aircraft has completed.

OPERATING SERVICE MONTH (OSM) - One monthly increment of operating service life
(OPNAVINST 5442.2).
OPERATING TARGET (OPTAR) (funding) - Annual funds (obligational authority) issued by
TYCOMs to units of the operating forces under their command from one of their budgets.
OPERATING UNIT - Squadrons and units with an operating allowance. Squadrons and units
may be further subdivided into detachments. To be an operating unit, a unit must have a mission
that requires flight operations (other than ferry or flight test) by Navy aircraft.
OPERATIONAL CHARACTERISTICS - The characteristics that pertain primarily to the

functions to be performed by the equipment, either alone or in conjunction with other equipment;
for example, for electronic equipment, operational characteristics include such items as the
frequency coverage, channeling, type of modulation, and character of emission.
OPERATIONAL EVALUATION - The test and analysis of a specific end item or system, in so
far as practical under service operating conditions, to determine if quantity production is
warranted. It is based on increase in military effectiveness to be gained and its effectiveness as
compared with currently available items or systems, with consideration given to personnel
capabilities to maintain and operate the equipment; size, weight, and location; and enemy
capabilities in the field.
OPERATIONAL NECESSITY - A mission associated with war or peacetime operations in
which the consequences of an action justify accepting the risk of loss of aircraft and crew.
OPERATIONAL RISK MANAGEMENT (ORM) - A systematic, decision-making process used
to identify and manage hazards that endanger naval resources.
OPERATIONAL SUPPORT INVENTORY (OSI) - The range and depth of material required to
support a planned aircraft program at a given site, consists of a fixed allowance for FLRs, DLRs,
and an operating level of stock for consumables.
OPERATIONAL TEST PROGRAM SET (OTPS) - The total grouping of test program sets
required to test an avionics system on ATE.
OPTIMUM PERFORMANCE CAPABLE (OPC) - The material condition of an aircraft that can
perform all assigned missions with all equipment operational. OPC Hours = MC Hours - (FMC
Hours + PMC Hours).

ORDNANCE HANDLING VEHICLE - Those vehicles that have been approved for over-the-
road transport and handling of ammunition and explosive ordnance. Examples of such equipment
include trucks, trailers, transporters, and bomb service trucks. The vehicles are a category of
logistics SE.
ORGANIZATION (ORG) CODE - A structured three-character alphanumeric code that
identifies activities within a major command.
ORGANIZATIONAL MAINTENANCE - See MAINTENANCE LEVELS.
OVERHAUL - The process of disassembly sufficient to inspect all the operating components
and the basic end article. It includes the repair, replacement, or servicing as necessary, followed
by the reassembly and bench check or flight test. Upon completion of the overhaul process, the
component or end article will be capable of performing its intended service life or service tour.
See MAINTENANCE TYPES.
PACKAGING - An all-inclusive term covering cleaning, preserving, packaging, packing, and

marking required to protect items during every phase of shipment, handling, and storage.
PAINT AND CORROSION EVALUATION (PACE) - An on-condition inspection developed to
address special requirements of F/A-18 series aircraft, occurs at the end of a set operational
service period, within a 9 month window. Details of program administration are in
OPNAVINST 3110.11. Evaluation specifics are in a Local Engineering Specification from
NAVAVNDEPOT North Island. The evaluation is performed by D-level P&E personnel and is
requested via normal procedures for P&E services. The results of PACE determine the
requirement for induction into Modification, Corrosion and Paint Program, which is done by D-
level artisans. Documentation required of the aircraft custodian is essentially equivalent to
aircraft administered by ASPA.
PARTIAL MISSION CAPABLE (PMC) - Material condition of an aircraft that can perform at
least one but not all of its missions. PMC is subdivided into PMCM and PMCS. PMC Hours =
MC Hours - (OPC Hours + FMC Hours).
PARTIAL MISSION CAPABLE MAINTENANCE (PMCM) - The material condition of an
aircraft that can perform at least one but not all of its missions because of maintenance
requirements existing on the inoperable subsystem(s). Start PMCM time when the condition is
discovered, except when the discovery is made in flight. In flight malfunction PMCM time starts
at the termination of flight. Stop PMCM time when maintenance is completed or interrupted by
a supply shortage. Report work stoppage resulting from parts non-availability as PMCS. PMCM
time resumes when required supply item(s) are delivered to the maintenance activity. PMCM
Hours = PMC Hours - PMCS Hours. See PARTIAL MISSION CAPABLE (PMC).

PARTIAL MISSION CAPABLE SUPPLY (PMCS) - Material condition of an aircraft that can
perform at least one but not all of its missions because maintenance required correcting the
discrepancy cannot continue because of a supply shortage. Start PMCS time when a supply
demand has been made for an item required to continue maintenance. Stop PMCS time at the
time the material is delivered to the designated delivery point or change of EOC code. PMCS
Hours = PMC Hours - PMCM Hours. See PARTIAL MISSION CAPABLE (PMC).
PARTICIPATING SERVICE - The military service that uses a multipurpose aeronautical system
and obtains support for it from the executive service.
PARTS KIT - Supporting items and material for the maintenance, repair, and rework of selected
aeronautical repairable end items procured, stocked, requisitioned, accounted for, and used on a
kit basis as one line item. Parts kits should not be confused with the kits issued to perform a one-
time modification of an item or with interim fleet maintenance support kits.
PARTS KIT CODES - Codes assigned to parts kits and items therein, for the maintenance,
repair, and rework of selected, repairable end items. See PROVISIONING SOURCE CODING,
and SOURCE, MAINTENANCE, AND RECOVERABILITY (SM&R) CODE.
PARTS LIFE TRACKING SYSTEM (PLTS) - An automated system used for tracking the
composition, location, and operating time/cycle counts or life usage indexes of aircraft engines,
propulsion systems, modules, and life limited components. PLTS is used to develop long-range
schedules for inspections, removals, replacements, procurements, and rework schedules for these
components, based on usage requirements and fixed or variable usage rates. It provides
important support to the RCM Program.
PECULIAR SUPPORT EQUIPMENT (PSE) - An item of SE that must be designed and
developed in conjunction with the development of a specific weapons system and does not meet
the criteria of CSE. PSE is divided as Avionics SE (common and peculiar) and Non-avionics SE
(common and peculiar).
PERIOD END DATE (PED) - The month and year in which the current operating service period
expires for a given aircraft and is subject to authorized adjustments resulting from ASPA
evaluations.
PERIODIC INSPECTION - See INSPECTIONS, SUPPORT EQUIPMENT (SE).

PERIODIC MAINTENANCE INFORMATION CARD (PMIC) - The PMS publication that
contains the component/assembly removal/replacement schedule, airframe structural life limits,
and a maintenance requirements systems index. It also contains a conditional inspection listing
and a phase change implementation card (included as required).

PERMANENT UNIT CODE (PUC) - The 6-character number permanently assigned to each
reporting custodian of aircraft. The master code list is maintained by the CNO PUCs may be
obtained by the cognizant ACC for assignment to newly formed units by correspondence,
message, or DSN telephone call.
PERSONAL COMPUTER MAINTENANCE TRAINING IMPROVEMENT PROGRAM
(PCMTIP) - The hardware and software used for the administration of MTIP on a personal
computer.
PERSONNEL QUALIFICATION STANDARDS (PQS) - Documents which describe the
knowledge and skills trainees must have to correctly perform their duties. The policy and
procedures for PQS are outlined in OPNAVINST 3500.34.
PERSONNEL REQUIREMENTS - Those requirements for personnel derived from a
maintenance task that must be performed. See PERSONNEL UTILIZATION.
PERSONNEL UTILIZATION - The actual reporting of accomplishments by personnel assigned.

PHASE INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
PHYSICAL CUSTODY - Actual possession of the aircraft or SE for a definite purpose. This
does not necessarily imply reporting custody.
PIPELINE - In logistics, the channel of support or a specific portion thereof by means of which
material or personnel flow from sources of procurement to their point of use. It includes all
program aircraft in logistic support of the operating segment of the inventory.
PLAN OF ACTION AND MILESTONES - A document that identifies actions or tasks in the
specific order needed to accomplish an objective. This document assigns to each action, the
office responsible, and the start and completion date for each action.
POOL - A grouping of repairable assemblies provided a rework activity as replacements for
similar defective repairable assemblies removed from an aircraft or engine undergoing some
phase of rework that are not to be reworked concurrently with the aircraft or engine from which
removed. These items are provided to prevent disruption of production schedules because the
lead-time to obtain the required replacement item from supply and the turnaround time of the
aircraft/engine are not compatible.
PRACTICAL JOB TRAINING (PJT) - Structured "hands-on" training conducted by the fleet
readiness squadron or supporting AIMD involving an arranged problem, task, or sequence in an
educational environment. See ON-JOB-TRAINNG (OJT).

PRECISION MEASURING EQUIPMENT (PME) - Devices used to measure, gauge, test,

inspect, diagnose, or examine material, supplies, and equipment to determine compliance with
requirements established in technical documents, for example, research, development, test, and
evaluation documents, specifications, engineering drawings, technical orders, technical manuals,
maintenance instructions, and serviceability standards.
PRE-EXPENDED BIN (PEB) - One that contains only low cost, high usage items. It is
replenished from stock in the retail outlet that supports the shop in which the PEB is located.
PREFERRED ITEM - One selected under a DOD program by which the item is designated for
procurement, stock, and issue, but which is not a standard item.
PREOPERATIONAL INSPECTION - See INSPECTIONS, SUPPORT EQUIPMENT (SE).

PREVENTIVE MAINTENANCE (PM) - The care and servicing needed to maintain aircraft
equipment, SE, and facilities in satisfactory operating condition by providing for systematic
inspection, detection, and correction of incipient failures either before they occur or before they
develop into major defects.
PRIMARY MISSION - For the purpose of maintenance data reporting, the primary purpose for
which the aircraft is assigned to the unit (reporting custodian).
PRIMARY SUPPORT EQUIPMENT CONTROLLING AUTHORITY (PSECA) - The term

applied to COMNAVAIRSYSCOM (PMA-260) who functions as the centralized SE inventory
management authority. The PSECA is responsible for coordinating redistribution of in-use
assets among the SECAs, prioritization of SE procurement, and distribution of new SE.
PROCESS - (1) A generic term used to describe the series of actions or uses an aircraft is
subjected to as it progresses through its service life. Six categories are included in the term:
operating, SDLM, special rework, storage, retirement or strike, and miscellaneous. Subdivisions
are included under each category to describe specifically the action of use involved. (2) Any set
of conditions, or set of causes, which work together to produce a given result. While it often
refers to the combination of people, materials, machines, and methods used to produce a given
product, it is also capable of assuming other meanings such as a method of assembly, a group of
people such as a pay group or workcenter, or a method of measurement.
PROCUREMENT - The process of obtaining personnel, services, supplies, and equipment.
PROCUREMENT CONTRACTING OFFICER (PCO) - The government-contracting officer

directing and administering the acquisition through the award of the contract. Administration of
the contract after award may be delegated to an ACO.

PROCUREMENT LEAD TIME - The interval, in months, between the initiation of procurement
action and receipt into the supply system of the production model, excluding prototypes,
purchased as the result of such actions. It is composed of two elements, production lead-time and
administrative lead-time. See INITIATION OF PROCUREMENT ACTION.
PRODUCTION AIRCRAFT - New aircraft accepted from the contractor by the Navy. They
include all Navy aircraft procured for operational or training purposes, that is, all aircraft except
those procured solely for experimental purposes. Every Navy aircraft is either experimental or
production.
PRODUCTION CONTROL - The functional organization within the IMA responsible for
workload control.
PRODUCTION DIVISION - Any division in the IMA responsible for a specific production
workload, for example, avionics, power plants.
PRODUCTION EQUIVALENT - An approved configuration change to the product baseline

incorporated by the manufacturer during production. The configuration change must have been
approved for retrofit on in-service equipment via a TD.
PROGRAM - A plan or system under which action may be taken toward a stated goal or
objective. A program is generally considered to have some or all of the following elements: (1) a
program manager, (2) a formalized governing directive, (3) designated funding, (4) standardized
procedures, and (5) specialized training.
PROGRAM AIRCRAFT - All production aircraft, except the Board of Inspection and Survey, in
the physical custody of the Navy for which current or future operation within an authorized
allowance is intended or can reasonably be expected. This includes all aircraft in the Navy
inventory except aircraft of experimental configuration, target drones (man-carrying), aircraft
retired but not yet stricken, or aircraft on bailment or loan.
PROGRAM OPERATING ALLOWANCE - The number of aircraft allowed a unit for flight
operations related to the unit mission.
PROGRAM SERVICE LIFE - The sum of operating service period plus non-aging or non-
operating time, approximates but does not set service life limit and is used for planning,
programming, and budgeting purposes.

PROJECT AIRCRAFT - Aircraft in either the controlling custody of the

COMNAVAIRSYSCOM aircraft custodian or in the reporting custody of units of operational
test and evaluation force under an authorized operating allowance for purposes of experiment,
research, development, test, and evaluation (other than rework evaluation of flyability tests) of
aircraft and aircraft equipment. Project aircraft have usually been altered to the extent it is
uneconomical to return them to service configuration.
PROPULSION SYSTEM SERIAL NUMBER (PSSN) - The same as engine serial number.
Modular engines will be assigned a PSSN, which identifies the complete engine as an assembly.
PROVISIONING - The process of doing the technical planning necessary to establish the item
support plan, piece by piece and assembly by assembly; establishing the minimum levels or
echelons responsible for repair; identifying the kind and type of SE requirements, handbooks,
manuals, and other maintenance publications; determining the basic factory and field training
requirements; and providing for the establishment of inventory management records.
PROVISIONING SOURCE CODING - The process of determining the range of repair parts
required to support and maintain an end item by assigning codes that indicate to maintenance and
supply personnel the manner of acquiring items for the maintenance, repair, or overhaul of the
end item. See SOURCE, MAINTENANCE, AND RECOVERABILITY (SM&R) CODE.
QUALIFICATION - Skill, knowledge, and experience required of personnel to properly perform

an assigned task.
QUALITY ASSURANCE (QA) - A planned and systematic pattern of all the actions necessary
to provide adequate confidence that the item or product conforms to established technical
requirements. See MAINTENANCE QA.
QUALITY AUDIT - A selective comparison of actual workmanship with a given set of
standards or objectives.
QUALITY CHARACTERISTIC - A product characteristic that has been identified by quality
and reliability assurance as being critical to or necessary for assuring an acceptable quality
product or process.
QUALITY COST – a. FAILURE COSTS - Costs incurred when a reworked product does
not meet specifications. Internal failure costs are those failure costs that are incurred before the
product is sold to our customer. External failure costs are those failure costs that are incurred by
the NAVAVNDEPOTs after the product is sold to our customer.
b. APPRAISAL COSTS - Costs incurred when a reworked product is verified or analyzed
to determine its conformance to specifications.

c. PREVENTION COSTS - Costs incurred for planning and maintaining the quality
system.
d. TOTAL QUALITY COST INDEX - Total quality costs or total costs X 100.
e. TOTAL QUALITY COSTS - Prevention costs and appraisal costs + failure costs.
QUICK ENGINE CHANGE (QEC) -
a. QUICK ENGINE CHANGE ASSEMBLY (QECA) - An engine completely assembled
with a QECK on a QECS with all accessories, less the propeller for reciprocating or turboprop
engines.
b. QUICK ENGINE CHANGE KIT (QECK) - A kit containing all items required for a
QECA, less GFE, engine, and propeller. Contractor furnished accessories may be deleted
subject to approval by the COMNAVAIRSYSCOM when storage limitations, bulk, or their
general nature warrant such deletion. The kit, as delivered, will be assembled as far as practical,
compatible with packaging limitations.
c. QUICK ENGINE CHANGE STAND (QECS) - A structural frame, equipped with
castors and floor locks on which a QECA may be mounted.
RADIOGRAPHIC - A method that uses X-rays or similar radiation for the purpose of
penetrating or being scattered by substances to reveal flaws or defects in the part or structure
being examined. See NONDESTRUCTIVE INSPECTION (NDI).
READY FOR ISSUE (RFI) MATERIAL - Material, equipment, aircraft, and SE which does not
require rework of any type, replacement of overage parts, or other than routine pre-installation
and post installation condition verification prior to use. RFI items are not necessarily new or like
new, but are functionally reliable and meet applicable performance specifications. Packaging
and preservation do not enter into the process of producing an RFI item but are required in order
to maintain the item identity and condition and to prevent damage during subsequent shipping,
handling, and storage.
RECEIPT INTO SUPPLY SYSTEM - That point in time when the first item or first quantity of
the item on the contract has been received at, or is en-route to, the point of first delivery after
inspection and acceptance. See PROCUREMENT LEAD TIME.

RECOVERABILITY CODE - Code assigned to support items to indicate to maintenance and

supply personnel the reclamation or disposition action required for items removed and replaced
during maintenance. See SOURCE, MAINTENANCE, AND RECOVERABILITY (SM&R)
CODE.
REDISTRIBUTION - The act of effecting transfer in control, use or location of material between
units or activities within or among the military services or between the military services and
other federal agencies.
REDUNDANCY - The existence of more than one means for accomplishing a given function.
Each means of accomplishing the function need not necessarily be identical.
REFERENCE NUMBER - A number used to identify an item of production or a range of items

of production by the manufacturer controlling the design, characteristics, and production of the
item by means of its engineering drawings, specifications, and inspection requirements.
REFERENCE SYMBOL - An alphanumeric code used to identify piece parts as distinct from
other items of the same part number in a single subassembly or circuit, such as four of the same
diodes within a circuit; each has the same part number but a different reference symbol.
Reference symbols are found in the IPB for the component.
RELIABILITY - The probability that an item will perform its intended function for a specified
interval under stated conditions.
RELIABILITY CENTERED MAINTENANCE (RCM) - An analytical process used to identify

preventive maintenance tasks to realize the inherent reliability of equipment at least expenditure
of resources.
REPAIR - Necessary preparation, fault correction, disassembly, inspection, replacement of parts,

adjustment, reassembly, calibration, or tests accomplished in restoring items to serviceable
status. See MAINTENANCE TYPES.
REPAIR CYCLE DATA - An uninterrupted record of a repairable item from the time of removal
until repair is completed or a reclamation or salvage determination is made.
REPAIR PART - Material capable of separate supply and replacement that is required for the
maintenance, overhaul, or the repair of an end article, for example, airframe, accessories,
instruments, engine, propeller, electrical, electronics, photographic, armament, and training
equipment, including the repair parts of SE. This definition does not include the SE end items.
REPAIRABLE ITEM - A durable item which, when unserviceable, can be economically restored
to a serviceable condition through regular repair procedures.

REPLACEMENT ITEM - An item, functionally interchangeable with another item, but differs
physically from the original in that the installation of the replacement requires operations such as
drilling, reaming, cutting, filming, or shimming, in addition to the normal application and
methods of attachment.
REPORTING CUSTODIAN - An organizational unit of the lowest echelon of command
accepting responsibility, involving the accountability to the CNO, for aircraft or engines, as
designated either by CNO or by the ACC. See OPNAVINST 5442.2 for additional information
concerning aircraft custody or custodian policy.
NOTE: Each aircraft or engine at any given time from acceptance to strike is in the
reporting custody of one, and only one, reporting custodian.
REPORTING CUSTODY - Responsibility to account for and provide information about

assigned aircraft or SE. This does not necessarily imply physical custody.
REPORTING PERIOD - For MDS, purposes, a reporting period is 1 month.
RESERVE AIRCRAFT - Aircraft in excess of immediate needs for active aircraft and are
retained in inventory for possible future needs.
RESERVE STOCK AIRCRAFT - Program aircraft in the controlling custody of

COMNAVAIRSYSCOM FS that are not currently and actively engaged in any of the various
logistic processes, such as, awaiting, or en-route to an operating command or to rework, required
in normal transition through standard service life. This category includes those aircraft stored-
service life not completed.
RESOURCES - Military and civilian personnel, material on hand and on order, the entitlement to
procure or use material, utilities, and services required for the performance of a basic mission,
including work or services performed for others.
RESPONSIBILITY CENTER - A command designated to receive and administer an operating

budget.
RETIREMENT - Separation of aircraft from the program inventory. Separation may be

accomplished by (1) strike, (2) transfer to status codes series P, R, S, or Y, or (3) transfer to a
contingency reserve status (code series W).
RETROFIT - Incorporation of an engineering change, at any level, in accepted or in-service

items.

REWORK (RWK) - The restorative or additive work performed on aircraft, aircraft equipment,
and aircraft SE at NAVAVNDEPOTs, contractors' plants, and such other industrial
establishments designated by TYCOMs. A rework process extends from the time some of the
work is started until all of the work has been completed, including temporary interruptions in
direct labor; it also includes rework evaluation and test and correction of discrepancies
determined thereby. Rework is divided into two categories, standard and special. See
STANDARD DEPOT LEVEL MAINTENANCE (SDLM) and SPECIAL REWORK.
REWORK FACILITY –
a. PRIMARY - A facility designated by COMNAVAIRSYSCOM as having the primary

D-level maintenance responsibility for each aircraft, engine, or equipment. In addition to
conducting rework, overhaul, or repair of the material listed, the designation as primary rework
facility for aircraft and engines carries with it the responsibility for providing engineering and
logistic services. When primary D-level maintenance responsibilities are contracted for,
engineering and logistic services will be provided for that aircraft or engine by a separately
designated rework facility which will also normally be assigned primary manufacturing
cognizance.
b. ALTERNATE - The facility, if any, which is assigned maintenance workload for

aircraft, engines, or equipment for which another facility has been designated as the primary
rework facility. The alternate rework facility will assume supporting engineering responsibilities
as a participating field activity as requested by and negotiated with the primary rework facility,
and will normally have responsibility for secondary manufacturing cognizance which may be
separately assigned a rework facility by COMNAVAIRSYSCOM.
SAFE FOR FLIGHT - The material condition of an aircraft which, considering mission
requirements and environmental conditions, permits it to be launched, flown and landed safely
and ensures the aircrew has, as a minimum, the operable equipment for safe flight required by:
a. NAVAIR 01 Series Manual, Aircraft NATOPS.
b. OPNAVINST 3710.7, General NATOPS.
c. OPNAVINST 5442.4, Subsystem Capability and Impact Reporting (Safely Flyable

Column).

SAFE FOR FLIGHT CERTIFICATION - The decision process performed by authorized and
designated personnel that certifies all W&B requirements have been satisfied, all applicable
MRCs have been complied with (or a deviation has been attained from the appropriate
authorities), all previously known discrepancies that precluded safe flight have been corrected,
and all known discrepancies (evaluated separately and collectively) do not preclude safe flight.
SAFETY LEVEL OF SUPPLY - The quantity of material, in addition to the operating level of
supply, required to be on hand to permit continuous operations in the event of minor interruption
of normal replenishment or unpredictable fluctuations in demand.
SALVAGE - The saving or rescuing of condemned, discarded, or abandoned property and of

materials contained therein for reuse, re-fabrication, or scrapping.
SAMPLE - One or more units of product drawn from a lot or batch selected at random without
regard to their quality. The number of units of product in the sample is the sample size.
SAMPLING PLAN - A statement of statistically valid sample size or sizes to be used and the
associated acceptance and rejection criteria.
SCHEDULED MAINTENANCE - Periodic prescribed inspection/servicing of equipment done

on a calendar, mileage, or hours of operation basis.
SCREENING –
a. ADMINISTRATIVE SCREENING - The screening of all material received at the IMA

for repair to determine if the item is within the check/test/repair capability of the IMA.
b. SUPPLY SCREENING - The screening of material by the supply-screening unit to

determine the disposition of material that cannot be repaired at the IMA.
SEA OPERATIONAL DETACHMENT (SEAOPDET) - A sea duty component assigned to

shore IMAs used to augment the aircraft carrier’s IMA in support of carrier air wing
embarkations.

SECOND-DEGREE REPAIR - The repair of a damaged or non-operating gas turbine engine, its
accessories, or components to an acceptable operating condition. As used in this instruction,
repair by designated IMAs includes the repair/replacement of turbine rotors and combustion
sections, including afterburners. Also authorized are replacing externally damaged, deteriorated,
or time-limited components, gearboxes, or accessories, and conducting engine inspections. In
addition, minor repair to the compressor section is authorized, for example, dressing nicks in
compressor vanes and blades within limits of the operating and service instructions. Further, the
repair or replacement of reduction gearboxes and torque shafts of turbo shaft engines and
compressor fans of turbofan engines which are considered repairable within the limits of the
approved intermediate maintenance manuals shall be done by second-degree repair activities.
SERIAL NUMBER (SERNO) - A number that identifies a specific end item or component. The
number is usually assigned by the manufacturer and is used to differentiate between a particular
end item or component and others of the same T/M/S, design, etc.
SERVICE LIFE - The time period during which the item can be maintained in service without
replacement. Each program aircraft, from acceptance to strike, follows a life cycle consisting of
alternate periods of operating and rework time as prescribed for each model by OPNAVINST
3110.11. Aircraft become eligible for strike upon completion of the life cycle specified for the
model.
SERVICE LIFE EXTENSION PROGRAM (SLEP) - One element of Conversion in Lieu of

Procurement. The restoration/replacement of a primary aircraft structure, which has reached its
life limit.
SERVICE PERIOD - A prescribed segment of the service life of aircraft subject to the SDLM
process, such as a stated number of calendar months or accumulated flight hours that an aircraft
is in the physical custody of an operating activity for use prior to SDLM or retirement. The
number and length of standard service periods, together with associated planning factors and
policies, are set forth in OPNAVINST 3110.11.
SERVICE TEST - A test of an item, system, material, or technique conducted under simulated or
actual operational conditions to determine whether the specified military requirements or
characteristics are satisfied.

SERVICEABLE - The condition of an end item in which all requirements for repair, bench
check, overhaul, or modification (as applicable) have been accomplished making it capable of
performing the function or requirements for which originally designed. The fact that signs of
previous use are apparent does not necessarily mean it is unserviceable. When appearance is not
a primary consideration, and the condition of the item meets all safety and performance
requirements, it will be processed as serviceable.
SERVICING - The replenishment of consumables needed to keep an item in operating condition,

but not including any other preventive maintenance. See COMMON SERVICING, CROSS
SERVICING, INTERDEPARTMENTAL/AGENCY SUPPORT, and INTERSERVICE
SUPPORT AND SERVICES.
SET - A unit or units and the necessary assemblies, subassemblies, and parts connected or
associated together to perform an operational function.
SHIP OPERATIONS - For the purpose of the NAMP, all flights that take off or land aboard a
carrier/ship will be designated as ship operations.
SHIP SCHEDULING - See MAINTENANCE SCHEDULE.
SHOP PROCESS CARDS - A ready reference for performing scheduled maintenance on

specific type of aviation life support system equipment and are an extension of the NAVAIR 13-
1-6 series manuals.
SHOP REPLACEABLE ASSEMBLY (SRA) - A generic term which includes all the packages
within a WRA including chassis and wiring as a unit. (Sub-level mechanization or modular
subdivisions within an SRA may occur.) Conversely, a WRA is composed entirely of SRAs.
SHORE ESTABLISHMENT - Comprised of shore activities with defined missions approved for
establishment by SECNAV.
SHORT SUPPLY - A situation existing when the total of stock on hand and anticipated receipts
during a given period are less than the total estimated demand during that period.
SOFTWARE - A set of programs, documents, procedures, and routines associated with the
operation of a computer system.
SORTIE - An operational flight by one aircraft.

SOURCE CODE - Code assigned to support items (spares, repair parts, components, parts, kits,
special tools, test equipment, and SE), to indicate the manner of acquiring items for the
maintenance, repair, or overhaul of end items. See SOURCE, MAINTENANCE, AND
RECOVERABILITY (SM&R) CODE.
SOURCE, MAINTENANCE, AND RECOVERABILITY (SM&R) CODE - A collective code

assigned to items during the provisioning, source coding, or selection process to convey specific
information to maintenance and supply personnel. The SM&R code consists of three parts; a
source code, a maintenance code, and a recoverability code. See SOURCE CODE,
MAINTENANCE CODE, RECOVERABILITY CODE, and PROVISIONING SOURCE
CODING.
SPARES - Articles identical to, or interchangeable with, the end articles on contract that are
procured over and above the quantity needed for initial installation for support of an aeronautical
system. See REPAIR PART, and SPARES AND REPAIR PARTS.
SPARES AND REPAIR PARTS - Spares are components of assemblies used for maintenance
replacement purposes in major end items of equipment. Repair parts are those piece parts, such
as individual parts or non-repairable assemblies, required for the repair of spares or major end
items.
SPECIAL INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
SPECIAL REWORK - The work done to aircraft, aircraft equipment, and aircraft SE to improve
or change their capability to perform specific missions or functions by replacement, removal,
addition, alteration, or repair of parts on equipment of the aircraft. See REWORK. Special
aircraft rework includes the following types:
a. MODERNIZATION - Rework performed on new or newly overhauled aircraft

withdrawn from storage. It includes incorporation of applicable changes and bulletins,
installation of accessories, and flight-testing.
b. MODIFICATION - Special rework performed on new production aircraft and aircraft

in the controlling custody of the operating commands. It includes only the incorporation of
changes and bulletins and the correction of discrepancies as required in the directive authorizing
the work to be performed.

c. CONVERSION - Rework which alters the basic characteristics of the aircraft to such
an extent as to effect a change in any part of the model designation, for example, F-14A to F-
14B.
d. PILOT - Rework of selected items by government activities, during both the
preoperational and operational program, to establish overhaul and repair capability for selected
components of an aeronautical system, SE, training equipment, and trainers.
e. ANALYTICAL - Complete disassembly, inspection, engineering evaluation, repair,

assembly, and test of commercial derivative Navy aircraft for defining the D-level maintenance
requirements.
f. INTERSERVICE - Rework of aircraft belonging to one service using the rework

resources of another, for example, Army rework of Navy owned H-1 helicopters.
g. IN SERVICE REPAIR - Repair by COMNAVAIRSYSCOM FS activities of aircraft

damaged beyond the repair capability of ACCs’ maintenance activities. Controlling custody
remains unchanged between or during the changes in physical custody. The aircraft will undergo
the entire rework process of the COMNAVAIRSYSCOM FS activity concerned unless specific
exceptions are requested by the ACC.
h. REPAIR - Necessary preparation, fault correction, disassembly, inspection,

replacement of parts, adjustment, reassembly, calibration, or tests accomplished in restoring
items to serviceable status. See MAINTENANCE TYPES .
SPECIAL TEST, PERMANENT AIRCRAFT - Aircraft on special test programs by authorized

activities or on bailment contract whose configuration is so drastically changed that return to its
original configuration or conversion to standard operational configuration is beyond practical or
economical limits. Special test, permanent aircraft are designated by the status prefix symbol N.
SPECIAL TEST, TEMPORARY AIRCRAFT - Aircraft on special test programs by authorized

organizations or on bailment contract having a special test configuration or whose installed
property has been temporarily removed to accommodate the test. At completion of the test, the
aircraft will be returned either to its original configuration or to standard operational
configuration. Aircraft in the process of Board of Inspection and Survey, Preliminary Evaluation
are considered in this category. Aircraft in this situation will be designated by the status prefix
symbol J. Upon completion of the tests and return of the aircraft to an operational configuration
the prefix symbol J will be dropped and so reported by OPNAV XRAY action.

SPECIAL WEAPONS - A term used to indicate weapons grouped for security or other reasons.
Specific terminology, for example, nuclear weapons or guided missiles, is preferable.
SPECIFICATION - A document intended primarily for use in procurement, which clearly and
accurately describes the essential technical requirements for items, materials, or services,
including the procedures by which it will be determined that the requirements have been met.
SQUADRON MANPOWER DOCUMENT (SQMD) - Identifies and justifies manpower

requirements in relation to mission operational assignments and ensures agreement and
alignment with the present manpower programs, controlling directives, policies, terminology,
and maintenance and administrative concepts.
STANDARD DEPOT LEVEL MAINTENANCE (SDLM) - A comprehensive D-level

inspection of selected aircraft structures and materials, correction of critical defects, and
incorporation of TDs, which may include limited removal and rework of the scheduled removal
component, equipment history record, assembly service record, and module service record items.
Depot maintenance processes for new acquisitions, such as F/A-18 Modification Corrosion and
Paint Program and AV-8 Age Exploration Program, are included in this definition.
STANDARD NAVY DISTRIBUTION LIST (SNDL) - Provides official address and distribution
information for the naval establishment.
STANDARD TRAINING ACTIVITY SUPPORT SYSTEM (STASS) - Standardized

comprehensive day-to-day integrated automated classroom support that feeds corporate level
data to NITRAS II.
STANDARDIZATION - The process by which the DOD achieves the closest practicable
cooperation among the services and agencies for the most efficient use of research, development,
and production resources and agrees to adopt on the broadest possible basis the use of: (1)
common or compatible operational administrative and logistic procedures; (2) common or
compatible technical procedures and criteria; (3) common, compatible, or interchangeable
supplies, components, weapons or equipment; and (4) common or compatible tactical doctrine
with corresponding organizational compatibility.
STANDARDS LABORATORY - A laboratory under the control of the military departments or

any agency of DOD that provides calibration services for certifying the calibration standards of
calibration installations. These laboratories normally obtain certification of their standards from
the National Institute of Standards and Technology.

STANDBY POOL - See POOL.
STATISTICAL ANALYSIS - The science of drawing conclusions from observed data using
statistical techniques and methods proven mathematically valid.
STATISTICAL DATA - An accumulation of data which may be graphically presented or

tabulated for use in determining the quality level being produced by any specific manufacturing,
repair, overhaul, or inspection process.
STATISTICAL QUALITY CONTROL - The control of quality through the application of

statistical techniques to inspection/verification methods and process analysis.
STATUS CODES (MILSTRIP) - Codes that furnish information from supply sources to
requisitioners or cosigners on the status of requisitions. Supply status (except "rejection" status,
code C) predicts shipment on time as specified by the priority delivery date or the required
delivery date.
STOCKAGE OBJECTIVE - The maximum quantities of material to be maintained on hand to

sustain current operations. It consists of the sum of stocks represented by the operating level and
the safety level. See LEVEL OF SUPPLY.
STORAGE - Temporary removal of an aircraft from the active inventory and placement in an
inactive status for an indefinite period. Storage assumes the aircraft will be inactive indefinitely
or for more than 60 days. Aircraft, in the custody of the COMNAVAIRSYSCOM FS activities,
that are not expected to commence a rework process for 60 days or more, shall be reported in the
appropriate storage status. An aircraft will remain in storage status from the beginning of the
preservation process until removal of preservation upon withdrawal from storage. Stored aircraft
will be preserved at COMNAVAIRSYSCOM or DOD activities and may be stored in the open,
in metal containers, or in cocoons.
STRIKE - The official action that removes an aircraft from the list of Navy aircraft.
STRUCTURALLY SIGNIFICANT ITEM (SSI) - The specific region or element of structure

whose failure would result in a major reduction of residual strength or loss of the structural
function.
SUBASSEMBLY - Two or more parts that form a portion of an assembly or a unit, replaceable
as a whole, but having a part or parts that are individually replaceable.

SUBCUSTODIAN - MEASURE participants supported by a customer activity that have

physical custody of equipment, regardless of actual ownership, such as squadrons and AIMD
production workcenterss.
SUBSTITUTE ITEMS - Two or more items possessing such functional and physical
characteristics as to be capable of being exchanged only under certain conditions or in particular
applications and without alteration of the items themselves or of adjoining items.
SUBSYSTEMS - A combination of two or more pieces of equipment, generally physically

separated when in operation, and such other components, assemblies, subassemblies and parts
necessary to perform an operational function or functions.
SUPPLIES - All items necessary for the equipment, maintenance and operation of a military
command.
SUPPLY - The procurement, distribution, maintenance while in storage, and salvage of supplies,
including determination of the kind and quantity of supplies.
SUPPLY MANAGEMENT - See INVENTORY CONTROL.
SUPPLY RESPONSE SECTION (SRS) - The section of the ASD that receives requests for
material and causes the issue and delivery of the requested material to be made.
SUPPLY SCREENING UNIT - The section of the ASD that screens and forwards, for
disposition, all components processed at the IMA.
SUPPORT - The action of a force that aids, protects, complements, or sustains another force per
a directive requiring such action.
SUPPORT EQUIPMENT (SE) - IMRL and non-IMRL equipment required to make an

aeronautical system, command and control system, support system, subsystem, or end item of
equipment (SE for SE) operational in its intended environment. This includes all equipment
required to launch, arrest (except Navy shipboard and shore based launching and arresting
equipment), guide, control, direct, inspect, test, adjust, calibrate, gauge, measure, assemble,
disassemble, handle, transport, safeguard, store, actuate, service, repair, overhaul, maintain, or
operate the system, subsystem, end item, or component. See COMMON SUPPORT
EQUIPMENT (CSE) and PECULIAR SUPPORT EQUIPMENT (PSE).

NOTE: The following equipment is excluded from the definition of SE: Powered and non-
powered hand tools; housekeeping items; office furniture and equipment common to all
activities defined in applicable allowance lists that are required as indirect support; items
used only by the contractor; and personal equipment, such as head sets and microphones.
SUPPORT EQUIPMENT CONTROLLING AUTHORITY (SECA) - A term applied to major

aviation commands that exercise administrative control of the AMMRL Program SE end items
for allowance and inventory control. The following are designated SECAs:
COMNAVAIRLANT, COMNAVAIRPAC, CNET, COMNAVAIRESFOR,
COMNAVAIRSYSCOM, and NAMTRAGRU.
SUPPORT EQUIPMENT QUICK ENGINE CHANGE ASSEMBLY (SE QECA) - An engine

(and in some cases transmission) assembly consisting of the basic block and all required
components and accessories which will provide a using activity with a complete assembly ready
for immediate operation after installation into the appropriate end unit.
SUPPORT EQUIPMENT RESOURCES MANAGEMENT INFORMATION SYSTEM

(SERMIS) - The replacement system for the Application Data for Material Readiness List. A
collection of technical and cataloging data identifying SE end items required for O-level, I-level,
and D-level aircraft maintenance. SERMIS provides the SECA with on-line visibility of source,
allowance, inventory, and rework data to aid in inventory control. See AIRCRAFT
INTERMEDIATE MAINTENANCE MATERIAL READINESS LIST (AMMRL) PROGRAM.
SUPPORT EQUIPMENT STANDARDIZATION SYSTEM (SESS) - A microcomputer based

asset control system for SE.
SUPPORTING AIRCRAFT - All active aircraft other than unit aircraft.
SURFACE TARGET - See MISSILE TARGET.
SURVEILLANCE - A mode of Type III verification, which allows the use of, reduced
verification through application of an effective audit program. Applicable products and
processes are those that display objective quality evidence or those that display a state of
statistical quality control using the Shop Process Card.
SYSTEM - A composite of subsystems, assemblies, skills, and techniques capable of performing

or supporting an operational or non-operational role. A complete system includes related
facilities, items, material, services, and personnel such that it can be considered a self-sufficient
item in its intended operation.

TABLE OF BASIC ALLOWANCE (TBA) - See AERONAUTICAL ALLOWANCE LISTS.
TAPE TRANSPORT MAGAZINE - A medium for storing maintenance data from the
maintenance status display and recording system on selected aircraft.
TECHNICAL DATA - Data required for the accomplishment of logistics and engineering
processes in support of the contract end item. It includes drawings, operating and maintenance
instructions, provisioning information, specifications, inspection and test procedures, instruction
cards and equipment placards, engineering and support analysis data, special purpose computer
programs, and other forms of audiovisual presentation required to guide personnel in the
performance of operating and support tasks.
TECHNICAL DIRECTIVE (TD) - A document authorized and issued by

COMNAVAIRSYSCOM to provide technical information necessary to properly and
systematically inspect or alter the configuration of aircraft, engines, systems, or equipment
subsequent to establishment of each respective baseline configuration. TDs include all types of
changes and bulletins and consist of information that cannot be disseminated satisfactorily by
revisions to technical manuals. NATEC controls assignment of TD numbers.
TECHNICAL DIRECTIVE (TD) CODE - A two-character numeric code that identifies the type
of TDs.
TECHNICAL DIRECTIVE (TD) IDENTIFICATION CODE - A 12- or 13-character

alphanumeric code used to identify a specific TD.
TECHNICAL DIRECTIVE (TD) STATUS CODE - A one-character alphabetic code used to

indicate the status of compliance with a TD.
TECHNICAL EVALUATION - Studies and investigations, by a developing agency, to

determine the technical suitability of material, equipment, or systems for use in the military
services.
TECHNICAL MANUAL - A publication containing a description of equipment, weapons, or

weapon system(s) with instructions for effective use. Included are one or more of the following
sections: instructions covering initial preparation for use, operational instructions, modification
instructions, maintenance instructions, parts lists or parts breakdown, and related technical
information or procedures, exclusive of those of an administrative nature.

TENANT - Any activity that will be aboard a ship or station for a period of time sufficient to
require specific assignment of shop, hangar, crew, and equipment or line spaces. Activities may
use a facility as an assigned tenant or as a joint tenant. Specific spaces may be assigned on a
rotational, seasonal, occasional, or transient basis as appropriate.
TEST - Subjecting an aircraft, airframe, engine, accessory, or item of equipage to prescribed

conditions to determine if it will function per predetermined requirements.
a. BENCH TEST - The subjection of aircraft, engines, accessories, equipment, and

equipage to prescribed conditions and specifications, with the use of shop test equipment, to
ensure proper functioning.
b. FUNCTIONAL TEST - The testing of installed aircraft/engines, accessories, and

equipage to determine proper functioning, particularly with respect to the applicable system.
c. SERVICE TEST - A test of an item, system, material, or technique conducted under

simulated or actual operational conditions to determine whether the specified military
requirements or characteristics are satisfied.
TEST AND MONITORING SYSTEMS (TAMS) - Used synonymously with PME.
TEST BENCH INSTALLATION - WRA installed in a test bench harness/test set/test console
which is required to simulate in a shipboard or shore-based maintenance shop, system, assembly,
or component of the end article for the purpose of accomplishing all necessary operational and
maintenance test and repair procedures.
TEST PROGRAM SET (TPS) - Items needed to test a unit on ATE. These items include
electrical, mechanical, instructional, and logical decision elements. The TPS elements are test
program, interconnection device, test program instruction, and supplementary data.
THIRD-DEGREE REPAIR - Encompasses the same gas turbine engine repair capability as the
second-degree repair except that certain functions, which require high maintenance man-hours
and are of low incident rate are excluded.
TIME/CYCLE PREFIX CODE - A one-character alphabetic code that identifies the type of time
or cycle data recorded on the item.

TOOL CONTROL MANUAL (TCM) - Contains information that includes material

requirements, tool inventories, and detailed instructions for the implementation and operation of
the Tool Control Program for a specific type/model aircraft.
TRAINING AIDS - Any item developed/procured with the primary intent that it shall assist in
training and the process of learning.
TRANSACTION CODE (TRCODE) - A two-character numeric code used to denote the type of
data being reported, and to indicate the record type to be produced.
TRANSFER - The act of conveying reporting/controlling custody of an aircraft/SE to another

custodian.
TRANSFER INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE and INSPECTIONS,

SUPPORT EQUIPMENT (SE)
TRANSIENT - Personnel, ships, or aircraft stopping temporarily at a station or port to which

they are not assigned/attached and having destination elsewhere.
TURNAROUND - The time between arriving at a point and departing from that point.
TURNAROUND CYCLE - Used in conjunction with vehicles, ships, and aircraft comprising the
following: loading time at home, planned maintenance time, and, where applicable, time
awaiting facilities. See TURNAROUND.
TURNAROUND INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE.
TURNAROUND TIME (TAT) - TAT is:
a. The time period that commences with the time an aircraft is removed from an operating
unit to undergo a rework process and terminates when the reworked aircraft is returned to an
operating unit. A change of reporting and controlling custody is not necessarily involved;
however, a change in physical custody is always involved. TAT is the sum of the following:
time en-route from an operating unit to the naval facility, time awaiting rework, time in rework,
time awaiting flight check after rework, time in a COMNAVAIRSYSCOM RFI status, and time
en-route to an operating unit.
b. The time needed to service, inspect, and check an item prior to recommitment.

c. The interval between the times a repairable item is removed from use and the time it is
available for reissue in a serviceable condition.
TURNAROUND TIME (TAT) (Recoverable Missile Targets) - For recoverable missile targets,
TAT is the total time required to perform a complete post launch rehabilitation inspection
commencing with the onset of decontamination of a recovered target and including all scheduled
and unscheduled maintenance and testing required to return it to a launch ready condition.
TYPE COMMANDS - See ADMINISTRATIVE COMMANDS.
TYPE EQUIPMENT CODE (TEC) -A 4-character code used to identify the complete end item
or category of equipment being worked on, for example, aircraft, engine, or SE. The general
format and structure of these codes is in Volume III, Appendix K. A complete listing of TECs
may be found in the Aviation Type Equipment Code List (A7210-01) (available on the Internet
at: https://logistics.navair.navy.mil.
TYPE MAINTENANCE (TM) CODE - A one-character numeric or alphabetic code that

identifies the type of maintenance performed.
ULTRASONIC - A method that uses ultrasonic energy to inspect parts of structures for defects,
thickness variations, corrosion, etc. The reflection of ultrasonic energy is observed to determine
discontinuities or measure thickness. This method can be applied to metallic or nonmetallic
materials. See NONDESTRUCTIVE INSPECTION (NDI).
UNIT - Unit is defined as: (1) a military element whose structure is prescribed by competent
authority, such as a Table of Organization, specifically, part of an organization; (2) an
organizational title of a subdivision of a group in a task force; (3) a standard of basic quantity
into which items of supply are priced, divided, issued, or used; and (4) an assembly or any
combination of parts, subassemblies, and assemblies mounted together, normally capable of
independent operation in a variety of situations.
UNIT AIRCRAFT - Those aircraft provided to an aircraft unit for performance of a flying
mission.
UNIT OF ISSUE - The quantity of an item, such as each number, dozen, gallon, pair, pound,
ream, set, or yard. Usually termed "unit of issue" to distinguish from "unit price".
UNSCHEDULED MAINTENANCE (UNS) - Maintenance, other than the fix phase of

scheduled maintenance, occurs during the interval between scheduled downtime maintenance
periods.

UPKEEP - The preventive, restorative, or additive work performed on aircraft, equipment, and
SE by operating units and aircraft SE activities. The term applies to any method of processing
aircraft required to ensure the completion of standard operating periods or service tours,
including but not limited to the servicing, periodic inspections, functional and bench test,
replacement, preservation, modification, and repair. An upkeep process extends from the time
some of the work is started until all the work is completed, including temporary interruptions in
direct labor; it also includes upkeep, evaluation, test, and correction of discrepancies determined
thereby. Upkeep is divided into two categories, standard and special. See MAINTENANCE
TYPES
.
a. STANDARD UPKEEP - The periodic or scheduled work performed on aircraft,
aircraft equipment, and aircraft SE after (and as a result of) completion of a prescribed number of
flying hours, operating hours, or calendar days per prescribed inspection or replacement
requirements and such that the end product requirement of the work includes the capability of
aircraft or equipment to serve a full prescribed period of flying hours, operating hours, or
calendar days before undergoing upkeep again.
b. SPECIAL UPKEEP - The work done to aircraft, aircraft equipment, and aircraft SE to
improve, change, or restore their capability to perform specific missions or functions by
replacement, removal, addition, alteration, or repair of parts/equipment/aircraft, without
particular regard to flying hours, operating hours, calendar days, or operating periods. Special
upkeep includes, but is not limited to, modification, repair, and unscheduled inspection,
replacement, or test.
USE (PRIMARY) - The primary reason an operating unit has an allowance of operating aircraft.
UTILIZATION - The average number of hours per unit period of time an aircraft is actually in
flight. Normally, utilization for a particular model aircraft is specified by the average number of
hours flown per operating aircraft per calendar month, for example, E-2C utilization is 30 hours
(meaning an average of 30 flight hours were flown per month per operating aircraft).
UTILIZATION FACTORS - Planned aircraft utilization per 24-hour day or calendar month, as
appropriate. Aircraft utilization factors for various types, classes, and models of aircraft differ
and must be specified for each. These factors are used in computations leading to the
determination of maintenance requirements, for example, maintenance man-hours, spares, and
repair parts required.
VENDOR - A manufacturer or supplier of a commercial item.

VERIFICATION - The determination of product quality conformance by (1) actual examination,

(2) measurement, (3) witnessing of tests, or (4) review of documented objective evidence
describing product/quality characteristics and comparison to prescribed quality requirements and
performed by QA group personnel.
VERSATILE AVIONICS SHOP TEST (VAST) - An automatic, high speed, computer

controlled, general-purpose test system that will isolate faults to a piece/part level.
VISUAL INFORMATION DISPLAY SYSTEM/MAINTENANCE ACTION FORM

(VIDS/MAF) - A multi-purpose document used in the MDS and VIDS.
VISUAL OR OPTICAL INSPECTION - An inspection performed by the human eye with such
aids as microscopes and borescopes. See NONDESTRUCTIVE INSPECTION (NDI).
WEAPON SYSTEM - A weapon and those components/parts required for its operation. (The
term is not precise unless specific parameters are established.)
WEAPONS HANDLING EQUIPMENT (WHE) - A category of WSE, which provides direct

support to the weapons item. This equipment includes both peculiar and common ordnance
handling and transportation equipment, as well as tools used for canning/de-canning, magazine
handling, and assembly of weapons/ordnance related items. Examples of this equipment include
hoisting beams, weapons carriers, strongbacks, handlift trucks, handling bands, magazine lifting
slings, weapons skids, trailers, bomb trucks (nonself-powered) and their associated tools, gauges,
jigs, alignment bars, bomb assembly tables, maintenance stands, and other weapons related
equipment. This equipment supports both air and surface launched weapons.
WEAPONS REPLACEABLE ASSEMBLY (WRA) - A generic term, includes all the

replaceable packages of an avionic equipment, pod, or system as installed in an aircraft weapon
system, with the exception of cables, mounts, and fuse boxes or circuit breakers.
WEAPONS SUPPORT EQUIPMENT (WSE) - A category of SE where the principal function is

support of the explosive ordnance component or weapon is used primarily by the Weapons
Department. This equipment may be defined further as being related to air-launched, surface, or
subsurface-fired weapons. Air-launched related equipment includes both
mechanically/electrically operated handling equipment and electronic test equipment, defined as
WHE and weapons test equipment, respectively.

WEAPONS SYSTEM PLANNING DOCUMENT (WSPD) - Provides base loading data,

planned procurements, delivery schedules, system inventories, planning factors, material support
policy, training plans, and other related planning information.
WEAPONS TEST EQUIPMENT - Specialized equipment of an electrical or electronic design

used to test, maintain, or service aircraft weapons, bombs, rockets, missiles, special weapons,
torpedoes mines, or any other explosive ordnance. This equipment is a category of WSE.
WHEN DISCOVERED (WD) CODE - A one-character alphabetic code that identifies when the
need for maintenance was discovered.
WORKCENTER - A designated functional area to which maintenance personnel are assigned.
WORKCENTER CODE - A three-character code that identifies workcenters. They are used in
MDR to identify a workcenter performing the maintenance action documented. Workcenter
codes are listed in Volume III, Appendix S.
WORKCENTER SUPERVISOR - The person assigned the responsibility of maintenance

management within a given workcenter.
WORK DOCUMENTS - Workload Control System Shop Work Orders which provide
mechanized documents (electronic accounting machine serialized punched cards) compatible
with the Installed Source Data Automatic Equipment Industrial Transactor: (1) UADPS Shop
Work Order; (2) Handwritten Shop Work Order; (3) Discrepancy Work Order; (4) other work
documentation required to supplement work documents; (5) Technical Data Package
Examination and Evaluation Worksheet (internal); and (6) temporary custody, logs and records,
ASR, SRC Card, EHR Card, MSR, and AESR (external).

WORK UNIT CODE (WUC) - A numeric or alpha/numeric code that identifies a system,
subsystem, set, major component, repairable subassembly, or part of an end item being worked
on. WUCs are assigned and controlled by the NATEC under the direction of
COMNAVAIRSYSCOM. WUCs are published in WUC manuals for end items in three major
categories: (1) T/M/S for aircraft, drones, and missiles; (2) aircraft flight/tactical trainers; and (3)
aeronautical SE. The first two positions of the WUC identify the system within the
aircraft/equipment on which work is being performed. A five (or greater where available)
character WUC is normally used in recording on equipment maintenance work to identify
discrepancies discovered to the greatest detail possible. The number 9 is used to indicate
"NOC". The NOC category is not intended as a catchall code but rather as a code under which
occasional discrepancies, for example, nonrecurring, and work on non-coded repairable items
may be reported. Refer to applicable aircraft/equipment WUC manuals for complete breakdown.
A unified numbering system code may be used in place of the WUC and may be either be
numeric or alpha/numeric.
ZONAL INSPECTION - See INSPECTIONS, AIRCRAFT/ENGINE and INSPECTIONS,

SUPPORT EQUIPMENT (SE).


REVIEW LESSON EXAMINATION
Review Lesson
Introduction The purpose of the review lesson examination is to prepare you for your final
examination. We recommend that you try to complete your review lesson
examination without referring to the text, but for those items (questions) you
are unsure of, restudy the text. When you finish your review lesson and are
satisfied with your responses, check your responses against the answers
provided at the end of this review lesson examination.
Directions Select the ONE answer that BEST completes the statement or that answers
the item. For multiple choice items, circle your response. For matching
items, place the letter of your response in the space provided.
Item 1 The purpose of the Maintenance Training Program is to establish policies,

responsibilities, and requirements for implementing training within
a. tool rooms.
b. quality assurance shops.
c. aviation maintenance activities.
d. flight lines.
Item 2 Which reference outlines command, administrative, and management

relationships and establishes policies and procedures for the assignment of
maintenance responsibilities and tasks?
a. OPNAVINST 5100.23 Navy Occupational Safety and Health

b. MCO P4790.20 Individual Training Standards System (ITSS)
c. OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)
d. OPNAVINST 5100.19 Navy Occupational Safety and Health
MCI Course 6002 R-1 Review Lesson Examination

Review Lesson, Continued
Item 3 As a workcenter supervisor in the MTP, you are responsible for ensuring
training is documented in the individual’s qualification/______ record.
a. certification
b. indoctrination
a. health
b. safety
Item 4 The two types of formal in-service training are lectures and
a. on-the-job-training.
b. lesson guides.
c. required reading.
d. indoctrination training.
Item 5 On-the-job-training is considered which type of training?
a. Formal in-service training

b. Required reading
c. Standing reading board
d. Informal in-service training
Item 6 The purpose of the TDCP is to establish policies, procedures, and

responsibilities for timely and accurate incorporation of
a. required reading.
b. technical doctorates.
c. technical directives.
d. OJT.
Item 7 Which reference establishes policies, responsibilities, and procedures for

using technical directives in support of Naval Aviation?
a. NAVAIR 00-25-300, Management and Procedures Manual

b. OPNAVINST 8000.16, Naval Ordnance Maintenance Management
Program (NOMMP)
c. OPNAVINST 4790.2H, Naval Aviation Maintenance Program (NAMP)

Item 8 The responsibility of the workcenter supervisor concerning the TDCP is to

ensure
a. tool room and avionics are notified immediately in the event a TD cannot
be incorporated after it has been issued.
b. all parts are given back to maintenance if a TD cannot be finished.
c. tool room has all parts and tools ordered for the TD.
d. all engines and engine components received are verified by Logs and
Records and Maintenance Administration (Marine Corps) for TD
configuration.
Item 9 Which of the following are the four types of technical directives?
a. RAMEC, Formal Change, Phase, Bulletin

b. Interim Change, Formal Change, RAMEC, Phase
c. Formal Change, Interim Change, Bulletin, RAMEC
d. Interim Change, Phase, Formal Change, Bulletin
Item 10 Which of the following are the four categories for technical directives?
a. Compliance Action, Cancellation Action, Urgent Action, Re-issue Action

b. Immediate Action, Cancellation Action, Urgent Action, and Compliance
Action
c. Immediate Action, Urgent Action, Compliance Action, and Re-issue
Action
d. Immediate Action, Record Purpose, Routine Action, and Urgent Action
Item 11 The purpose of the Fuel Surveillance Program is to establish policies,

satisfactory level of _________ and engine fuel systems purity.
a. exhaust
b. fuel control
c. intake
d. aircraft

Item 12 Which reference contains ready issue fuel operations to include fuel receipt,
short-term storage (usually a 10-day supply of fuel for the specific activity),
transfer, and dispensing to aircraft?
a. NAVAIR 00-80T-109, Aircraft Refueling NATOPS Manual

b. NAVAIR 15-01-500, Preservation of Naval Aircraft
c. OPNAVINST 4790.2H Naval Aviation Maintenance Program (NAMP)
d. NAVAIR 01-1A-35, Aircraft Fuel Cells and Tanks
Item 13 The workcenter supervisor is responsible for ensuring only properly trained
personnel perform ____ sampling.
a. technical
b. fuel
c. cell
d. auxiliary
Item 14 Which sampling procedure is required for aircraft, but not for test cells?
a. Empty and clean bottles after use.

b. Wear PPE including chemical-resistant gloves and goggles.
c. Use a minimum of 2 hours settling time.
d. Dispose of fuel per HAZMAT procedures.
Item 15 Which contaminant is common in fuel?
a. Sand
b. Water
c. Airborne dirt
d. Iron-rust and scale

Item 16 The purpose of the NOAP is to provide Navy and Marine Corps aviation
activities the guidance necessary to achieve the required performance,
efficiency, and _______ support by establishing policy for integrated oil
analysis requirements.
a. personnel
b. logistical
c. testing
d. engine oil
Item 17 Which reference is an instruction for the implementation of the NOAP and
JOAP, and also provides policy and guidance as well as assigns
responsibilities to ensure effective and efficient use of these programs?
a. OPNAVINST 4731.1, Joint Oil Analysis Program

c. NAVAIR 06-30-501, O2/N2 Oxygen/Nitrogen Cryogenics Systems
d. NAVAIR 06-20-2, Gas Cylinders
Item 18 Which of the following is not a responsibility of the workcenter supervisor

outlined by the NAMP regarding the NOAP?
a. Ensure NOAP indoctrination, follow-on training, and lubrication systems

training (to include proper servicing and documentation procedures) are
b. Coordinate with the NOAP manager to ensure an adequate supply of oil
c. Conduct oil sampling/servicing per applicable NAMPSOPs.
d. Ensure all Marines have the proper OJT syllabus for their type of
training.
Item 19 The type of contamination where the pieces of the component are generated
by friction between the moving metallic surfaces in mechanical systems and
used as a piece of operating equipment to produce at a constant rate is called
a. sand.
b. water.
c. wear metals.
d. dirt.

Item 20 The three types of oil sampling techniques are dip tube, pump, and
a. drain tube.
b. drain valve.
c. store.
d. drop.
Item 21 The three categories of oil samples are special, routine, and
a. normal.
b. abnormal.
c. complex.
d. additional special.
Item 22 The purpose of the ABO Surveillance Program is to establish policies,

techniques to prevent contamination of aircraft _________________ systems
and components through careful/safe handling, surveillance, and quality
control.
a. hydraulic
b. oxygen
c. oil lubrication
d. fuel
Item 23 Which reference provides the technical information related to the

configuration, application, function, operation, storage, and maintenance of a
particular category of aircrew safety and survival equipment?

b. NAVAIR 06-20-2, Gas Cylinders (Storage Type)
c. NAVAIR 06-30-501, O2/N2 Oxygen/Nitrogen Cryogenics Systems
d. NAVAIR 13-1-6.4-1/4, Aviation Crew System Oxygen Equipment

Item 24 Workcenter supervisors are responsible for ensuring equipment and areas
around the oxygen system components are clean and free of oil and _____
products.
a. fuel
b. water
c. oxygen-free
d. petroleum
Item 25 LOX contamination is divided into three basic categories: hydrocarbons, inert
solids, and
a. light hydrocarbons.
b. toxic and odorous contaminants.
c. liquids.
d. gases.
Item 26 Three basic hazards involving LOX are freezing, pressure explosion, and
a. vapor.
b. fire and explosion.
c. gaseous blockage.
d. hydrocarbons.

Item 27 The purpose of the Hydraulic Contamination Control Program is to establish

techniques to achieve and maintain a satisfactory level of ________ in
hydraulic systems and provide for safe and efficient operation of Naval
aircraft, weapon systems, and support equipment.
a. material upkeep
b. contamination
c. fluid purity
d. fluid levels
Item 28 Which reference is required reading for all personnel involved in any level of
hydraulic maintenance?
a. NAVAIR 17-15E-52, Hydraulic Fluid Contamination Analysis Kit Part

Number 57L414
b. NAVAIR 01-1A-509, Aircraft Weapons System Cleaning and Corrosion
Control
c. NAVAIR 01-1A-17, Aviation Hydraulics Manual
d. OPNAVINST 4790.2H, Naval Aviation Maintenance Program (NAMP)
Item 29 The workcenter supervisor is responsible for ensuring _____ indoctrination

and follow-on training is provided to personnel.
a. HCCP
b. PWCP
c. HCCA
d. PCCH
Item 30 The internal porting of the sampling point shall not impede the passage of
hard particulate matter up to ____ microns in diameter.
a. 300
b. 500
c. 550
d. 700

Item 31 The Hydraulic Contamination Analysis Kit 57L414 uses the ______ method
to detect contamination in the fluid.
a. drop test
b. fluid shake
c. visual test
d. patch test
Item 32 Particulate matter, fluid/liquids and gas/air are the different types of ____
fluid contamination.
a. organic
b. metallic
c. hydraulic
d. water
Item 33 The two basic types of hoses used in military aircraft are synthetic rubber and
a. plastic coated.
b. metal banded.
c. real rubber.
d. polytetrafluoroethylene (teflon).
Item 34 Corrosion resistant steel and ________________ are the two most common
types of tubing used.
a. steel braided
b. aluminum alloy
c. high-pressure plastic
d. rubber coated
Item 35 The two types of approved closures for hydraulic lines are caps and
a. plastics.
b. fillers.
c. plugs.
d. high temp tape

Item 36 The purpose of the Tire and Wheel Maintenance Safety Program is to
Support Equipment (AWSE) tires and wheels in all Navy and Marine Corps
a. garages.
b. aviation activities.
c. air groups.
d. air bases.
Item 37 Which reference establishes a uniform maintenance program for all Naval
aircraft wheels to reduce in-service failures and prolong the service life of all
aircraft wheels?
a. NAVAIR 04-10-506, Aircraft Tires and Tubes

b. NAVAIR 17-1-129, Support Equipment Tire and Wheel Assemblies
c. NAVAIR 04-10-1, Aircraft Wheels
d. NAVAIR 01-1A-503, Maintenance of Aeronautical Antifriction Bearings
Item 38 The workcenter supervisor must ensure bearings are protected from careless
handling and contamination from abrasives, improper greases, solids, fluids,
and salt water per
a. NAVAIR 01-1A-205.
b. NAVAIR 01-1A-50R.
c. NAVAIR 01-1A-500.
d. NAVAIR 01-1A-503.
Item 39 When removing the tire deflation kit, do not attempt to remove an aircraft tire
assembly until the tire is deflated, the ______ is removed, and the deflated
tire flag is installed.
a. valve core
b. tire gear
c. bearing
d. axle nut

Item 40 After installing the wheel/tire assembly on aircraft in accordance with the
applicable instructions for the specific aircraft, inspect the assembly for the
correct tire size, ply rating, ___, and wheel part number.
a. manufacturer number.
b. NSN.
c. weight.
d. landing gear.
Item 41 The purpose of the FOD Program is to establish policies, responsibilities, and
requirements to prevent damage to aircraft, ________, SE and other
aeronautical equipment, and to provide uniform FOD reporting procedures.
a. tools
b. safety equipment
c. engines
d. breakables
Item 42 Which reference provides the responsibilities of the workcenter supervisor

involving the FOD program?
a. MCO P4790.20 Individual Training Standards System (ITSS)

b. NAVAIR 15-01-500, Preservation of Naval Aircraft
c. OPNAVINST 5100.23 Navy Occupational Safety and Health
d. OPNAVINST 3750.6R, Naval Aviation Safety Program
Item 43 The workcenter supervisor must ensure all FOD hazards are reported to
_______ and the FOD prevention program manager.
a. Maintenance Control
b. Quality Assurance
c. Tool Room
d. CDI

Item 44 The purpose of the HMC&M Program is to establish policies, procedures,

responsibilities, and requirements for the safe use, _________, and disposal
of HAZMAT.
a. spraying
b. venting
c. handling
d. trashing
Item 45 Which reference provides policy and identifies key statutory and regulatory
requirements for the HMC&M program?

b. OPNAVINST 5090.1, Environmental and Natural Resources Program
Manual
c. OPNAVINST 5100.19, Navy Occupational Safety and Health
Item 46 The workcenter supervisor is responsible for ensuring all personnel receive
command HMC&M and hazardous communication per OPNAVINST
5100.19 and OPNAVINST 5100.23 within ___ days of assignment.
a. 5
b. 15
c. 30
d. 60
Item 47 The purpose of the ESD Program is to establish policies, responsibilities, and
requirements for the handling, transportation, storage, and maintenance of
Electrostatic Discharge Sensitive (ESDS)
a. devices/components.
b. support equipment.
c. workshops.
d. aircraft.

Item 48 Which reference provides instructions for packaging procedures for ships or
stations that have limited packaging materials, technical references, and
trained personnel?
a. NAVAIR 01-1A-23, Standard Maintenance Practices Miniature/

Microminiature (2M) Electronic Assembly Repair
b. MIL-HDBK-773, Electrostatic Discharge Protective Packaging
c. NAVSUP Publication 484, Supply Afloat Fleet and Field Packaging
Procedures
d. OPNAVINST 4790.2H, Naval Aviation Maintenance Program (NAMP)
Item 49 The workcenter supervisor is responsible for ensuring all ESD items remain
in their protective packaging until installed or ready for test, ____, inspection,
or assembly at an ESD protected work area.
a. cleaning
b. repair
c. shipping
d. charged
Item 50 The purpose of the MMP is to establish policies, responsibilities, and

requirements for the repair of miniature/micro-miniature electronic
assemblies and the certification/recertification and ______ of personnel.
a. management
b. classification
c. training
d. assignment
Item 51 Which reference is used whenever repair procedures are not specified in the
equipment technical manuals?

b. NAVAIR 01-1A-23, Electrostatic Discharge Control Program for
c. NAVAIR 17-15-99, PRC-2000-2M, Electronic Rework Power Unit
d. NAVAIR 17-600-193-6-2, PRC-2000-2M, System Maintenance
Requirements Cards

Item 52 Which personnel are only allowed to perform electronic assembly repair?
a. 3M technicians
b. 2M certified technicians
c. Avionics technicians
d. Flight line technicians
Item 53 The purpose of the Oil Consumption Program is to establish policies,

responsibilities, and requirements for monitoring _______________ to detect
impending failures without equipment removal or extensive disassembly.
a. engine oil compartments

b. fuel compartments
c. tool room equipment
d. aircraft equipment conditions
Item 54 Aircrew responsibilities concerning the Oil Consumption Program can be

found in which of the following references?
a. DODINST 6050.5, DOD Hazardous Communications Program

c. NAVAIR 17, Tool Control Manuals (series)
Item 55 Aircrew must ensure oil consumption rates are calculated and documented on
the Engine/Gearbox Oil Consumption Record
a. at the end of the day.

b. prior to flight.
c. each morning.
d. before pumps.

Item 56 The purpose of the Tool Control Program is to establish policies and
and inventorying _______ tools.
a. outside source
b. broken
c. non-military
d. common hand
Item 57 If a Tool Control Manual does not exist for a specific type/model/ series
(T/M/S) aircraft, which of the following will develop a local tool control
manual?
a. Senior maintenance controller

b. Quality Assurance Shop
c. Maintenance Control Shop
d. Reporting custodian
Item 58 Who is responsible for assigning the workcenter tool control representative?
a. Tool room representative

b. Workcenter supervisor
c. Quality Assurance officer
d. Maintenance control officer
Item 59 Aircrew personnel must be thoroughly versed in all aspects of the TCP.
Before the aircraft can go on a flight, it must be signed off as “_____ for
flight.”
a. prepare
b. ready
c. safe
d. release

Item 60 Who is responsible for providing assistance to the workcenter supervisor in

preparing documents for the TCP?
a. Quality assurance personnel

b. Tool room personnel
c. Tool control representative
d. Maintenance control personnel
Item 61 Which of the following documents indicates whether the tool container has all
the tools required?
a. Missing/Broken/Worn Tool Report

b. Tool Container Shortage List
c. Change/Deviation Request
d. Tool Container Missing List
Item 62 Which of the following, when initiated, can cause all aircraft involved in
maintenance to be grounded?
a. Change/Deviation Request
b. Tool Container Shortage Report
c Missing/Broken/Worn Tool Report
d. Tool Container Missing List
Item 63 The purpose of the Corrosion Prevention and Control Program is to establish
aircraft, engines, components, and SE, and provides _________ for
emergency reclamation.
a. tools
b. personnel
c. direction
d. control

Item 64 Which reference concerning the Corrosion Control Prevention Control

Program issues policies, procedures, and responsibilities for activities
supporting or performing ordinance maintenance?
a. NAVAIR 01-1A-509, Aircraft Weapons System Cleaning and Corrosion

Control
b. OPNAVINST 8000.16, The Naval Ordnance Maintenance Management
Program (NOMMP)
c. OPNAVINST 3750.6R, Naval Aviation Safety Program
Item 65 All workcenter personnel involved in the Corrosion Prevention and Control
Program uses authorized procedures for aircraft and equipment cleaning,
corrosion treatment, and
a. tool preservation.
b. preservation.
c. SE violations.
d. equipment breakage.
Item 66 Which type of corrosion occurs when different metals are in contact with each
other and added with an electrolyte, such as salt water, is introduced?
a. Pitting
b. Intergranular
c. Exfoliation
d. Galvanic or dissimilar metal
Item 67 Only authorized corrosion prevention and control materials are to be used and
stored until the _________ has been exceeded.
a. use
b. content
c. shelf life
d. time

Item 68 The purpose of the Support Equipment Operator Training and Licensing
training and
a. classes.
b. licensing.
c. breakage.
d. lubrication
Item 69 Which reference presents information to reduce personnel injuries, aircraft

and equipment damage, and loss of operational readiness and dollars resulting
from ground accidents, particularly those involving ground support
equipment (SE)?
a. OPNAVINST 1540.2E, Naval Aviation Maintenance Training

b. NAVAIR 00-80T-96, Basic Handling & Safety Manual, US Navy
c. NAVAIR 00-80T-119, Weight Handling Support Equipment Manual
d. DOD 4145.19-R-1, Storage and Materials Handling
Item 70 SE operator licenses are valid for type equipment and aircraft for ____ years,
regardless of activity assigned.
a. 1
b. 2
c. 3
d. 4

Solutions The table below lists the answers to the review lesson examination items. If
you have questions about these items, refer to the reference page.
Item Number Answer References

1 c 1-5
2 c 1-6
3 a 1-7
4 c 1-8
5 d 1-20
6 c 1-31
7 a 1-32
8 d 1-35
9 c 1-38
10 d 1-42
11 d 2-5
12 a 2-6
13 b 2-8
14 c 2-14/2-15
15 b 2-18
16 b 2-29
17 a 2-30
18 d 2-31
19 c 2-34
20 b 2-36
21 d 2-41
22 b 2-51
23 d 2-52
24 d 2-54
25 b 2-60
26 b 2-66
27 c 2-78
28 c 2-79
29 a 2-81
30 b 2-97
31 d 2-98
32 c 2-101
33 d 2-109

Solutions,
continued

34 b 2-113
35 c 2-115
36 b 2-123
37 c 2-124
38 d 2-127
39 a 2-141
40 b 2-142
41 c 2-151
42 d 2-152
43 a 2-156
44 c 2-172
45 b 2-173
46 c 2-176
47 a 2-197
48 c 2-200
49 b 2-202
50 c 2-217
51 b 2-218
52 b 2-220
53 d 3-4
54 b 3-6
55 b 3-8
56 d 3-15
57 d 3-17
58 b 3-18
59 c 3-20
60 c 3-22
61 b 3-28
62 c 3-30
63 c 3-45
64 b 3-47

Solutions,
continued

65 b 3-49
66 d 3-51
67 c 3-57
68 b 3-67
69 b 3-69
70 c 3-75

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MCI 6002

MARINE CORPS INSTITUTE

Subj: AVIATION MAINTENANCE WORKCENTER SUPERVISOR COURSE (MCI 6002)

4. Recommendations. Comments and recommendations on the contents of the course are

Student Information ...................................................................................................... iii

Study Unit 1 Directive Programs..................................................................... 1-1

Lesson 1 Maintenance Training Program .................................................. 1-3

Study Unit 2 Safety Oriented Programs........................................................... 2-1

Lesson 1 Fuel Surveillance Program ......................................................... 2-3

Study Unit 3 Tool and Material Upkeep Programs .......................................... 3-1

Lesson 1 Oil Consumption Program.......................................................... 3-3

Appendix A Acronyms and Abbreviations ..................................................... A-1

Review Lesson ................................................................................................... R-1

MCI Course 6002 i

MCI Course 6002 ii

Number and MCI 6002

Review Agency Commanding Officer

ACE Not applicable to civilian training/education

MCI Course 6002 iii

MCI Course 6002 iv

Bravo Congratulations on your enrollment in a distance education course from the

• YOU SEEK TO IMPROVE YOURSELF. You are enrolled to improve

• YOU HAVE THE INITIATIVE TO ACT. By acting on your own, you

• YOU ACCEPT CHALLENGES. You have self-confidence and believe

• YOU ARE ABLE TO SET AND ACCOMPLISH PRACTICAL

Continued on next page

MCI Course 6002 v

Continued on next page

MCI Course 6002 vi

• CHALLENGE YOURSELF. Try to recall the entire learning sequence

• USE UNUSED MINUTES. Use your spare moments to review. Read

• APPLY WHAT YOU HAVE LEARNED. It is always best to use the

• USE THE “SHAKEDOWN CRUISE” TECHNIQUE. Ask another

• MAKE REVIEWS FUN AND BENEFICIAL. Reviews are good habits

Continued on next page

MCI Course 6002 vii

Graduating! As a graduate of this distance education course and as a dedicated Marine,

MCI Course 6002 viii

Content Whenever maintenance is involved within the aviation community, mistakes

Scope Training of personnel and incorporation of technical changes on aircraft are

In This Study This study unit contains the following lessons

Topic See Page

MCI Course 6002 1-1 Study Unit 1

MCI Course 6002 1-2 Study Unit 1

Scope Maintenance training maintains and increases technical knowledge and

Content This lesson will provide you with the

• Guidance needed as a workcenter supervisor to monitor the Maintenance

• Proper procedures for managing a MTP within your workcenter.

• Dynamics of the MTP ranging from indoctrination training to on-the-job

Learning Upon completion of this lesson, you should be able to

• Identify the references used to manage the MTP.

• Determine the responsibilities of the workcenter supervisor in the NAMP.

• Identify each type of training the workcenter supervisor is responsible for

Continued on next page

MCI Course 6002 1-3 Study Unit 1, Lesson 1

In This Lesson This lesson contains the following topics

Topic See Page

MCI Course 6002 1-4 Study Unit 1, Lesson 1

Purpose The Maintenance Training Program establishes policies, responsibilities, and

References Listed below are required references needed to manage a Maintenance