208 AMM - Section-8
208 AMM - Section-8
208 AMM - Section-8
TABLE OF CONTENTS
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Identification Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Cessna Owner Advisories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
United States Airplane Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
International Airplane Owners. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Airplane File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Airplane Inspection Periods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
FAA Required Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Inspection Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Cessna Customer Care Program . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
CESCOM System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Pilot Conducted Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . 8-9
Alterations or Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Ground Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Tiedown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Jacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
Leveling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Oil Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Oil System Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
Oil Quantity Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
Fuel Grade (Specification) and Fuel Additives. . . . . . . . . . . . . . 8-20
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Fuel Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26
Fuel Contamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-27
Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
Oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
Ground Deice/Anti-Ice Operations . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Holdover Timetable
(Type I, Type II, Type III, and Type IV Fluids) . . . . . . . . . . . . . 8-35
Essential Areas to be Deiced. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
Essential Areas to Apply Anti-Ice Fluid . . . . . . . . . . . . . . . . . . . 8-43
Deice and Anti-Ice Fluid
Direct Spray Avoidance Areas . . . . . . . . . . . . . . . . . . . . . . . . 8-44
Deicing and Anti-Icing Application . . . . . . . . . . . . . . . . . . . . . . . 8-45
Cleaning and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46
Painted Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46
Windshield and Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
Stabilizer Abrasion Boot Care . . . . . . . . . . . . . . . . . . . . . . . . . . 8-51
Propeller Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-51
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-52
Interior Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-55
Avionics Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-56
Prolonged Out of Service Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-57
IDENTIFICATION PLATE
All correspondence regarding your airplane should include the Serial
Number. The Serial Number, Model Number, Production Certificate
Number (PC) and Type Certificate Number (TC) can be found on the
Identification Plate, located on the aft left tailcone. The Finish and Trim
Plate, which is installed on the lower part of the left forward doorpost,
contains a code describing the exterior paint combination of the
airplane. The code may be used in conjunction with an applicable
Illustrated Parts Catalog if finish and trim information is needed.
The following additional publications, plus many other supplies that are
applicable to your airplane, are available from a Cessna Authorized
Service Facility.
• Information Manual (contains Pilot’s Operating
Handbook Information)
• Maintenance Manual, Wiring Diagram Manual and
Illustrated Parts Catalog
NOTE
A Pilot's Operating Handbook and FAA Approved Airplane
Flight Manual which is lost or destroyed may be replaced by
contacting Cessna Customer Care.
Most of the items listed are required by the United States Federal
Aviation Regulations. Since the Regulations of other nations may
require other documents and data, owners of airplanes not registered in
the United States should check with their own aviation officials to
determine their individual requirements.
INSPECTION PROGRAMS
Refer to the 208 Maintenance Manual, Chapter 4-00-00, Airworthiness
Limitations, for FAA approved mandatory replacement times and
inspection intervals for components and structures that are life-limited.
The section also gives the scheduled inspection requirements for
structural and fatigue components that are considered a part of the
certification process. Refer to Chapter 5-00-00 for approved time limits
and maintenance checks for the Model 208B airplanes.
NOTE
Airplanes operating in other than U.S. registry should refer
to the regulations of the country of certification for
information on approved maintenance inspection programs.
CESCOM SYSTEM
CESCOM is Cessna’s Computerized Maintenance Records System.
This comprehensive system provides an accurate and simple method
of monitoring and scheduling inspections, Service Bulletins, Service
Kits, Airworthiness Directives as well as scheduled and unscheduled
maintenance activities. For detail information about CESCOM, refer to
the CESCOM Instruction Manual supplied with the airplane.
NOTE
Pilots operating airplanes of other than U.S. registry should
refer to the regulations of the country of certification for
information on preventive maintenance that may be
performed by pilots.
ALTERATIONS OR REPAIRS
It is essential that the FAA be contacted prior to any alterations on the
airplane to ensure that airworthiness of the airplane is not violated.
Alterations or repairs to the airplane must be accomplished by licensed
personnel, utilizing only FAA Approved components and FAA Approved
data, such as Cessna Service Bulletins.
TOWING
The airplane is most easily and safely maneuvered by hand with the
towbar attached to the nosewheel. The towbar may be stowed in Zone
6. Moving the airplane by hand will require that the individual steering
with the towbar be assisted by personnel pushing at the wing struts.
CAUTION
Do not push or pull the airplane using the propeller
blades or control surfaces.
Use extreme caution during towing operations, especially when towing
with a vehicle. Do not exceed the nose gear turning angle limit of 51.5°
either side of center as shown by the steering limit marks.
CAUTION
UNLOCK the rudder lock and remove any external
rudder locks before towing.
If the airplane is towed or pushed over a rough surface during
hangaring, watch that the normal cushioning action of the nose gear
does not cause excessive vertical movement of the tail and the
resulting contact with low hangar doors or structure. A flat nose tire will
also increase tail height.
PARKING
When parking the airplane, head into the wind and set the parking
brakes. Do not set the parking brakes during cold weather when
accumulated moisture may freeze the brakes, or when the brakes are
overheated. Install the control wheel lock, engage the rudder lock, and
chock the wheels (if the brakes are not utilized) to prevent airplane
movement. In severe weather and high wind conditions, tie the airplane
down as outlined in the tiedown section.
CAUTION
Any time the airplane is loaded heavily, the footprint
pressure (pressure of the airplane wheels upon the
contact surface of the parking area or runway) will be
extremely high, and surfaces such as hot asphalt or
sod may not adequately support the weight of the
airplane. Precautions should be taken to avoid airplane
parking or movement on such surfaces.
TIEDOWN
Proper tiedown procedure is the best precaution against damage to the
parked airplane by gusty or strong winds. To tiedown the airplane
securely, proceed as follows:
1. Head the airplane into the wind, if possible.
2. Set the parking brake.
CAUTION
Do not set the parking brake during cold weather when
accumulated moisture may freeze the brakes or when
the brakes are overheated. If the brakes are not
utilized, chock the nose and main wheels to prevent
airplane movement.
3. Install the control wheel lock and engage the rudder lock.
4. Set aileron and elevator trim tabs to neutral position so that tabs
fair with control surfaces.
5. Install pitot tube cover(s), if available.
6. Secure ropes or chains of sufficiently strong tensile strength to
the wing tiedown fittings and secure to ground anchors.
7. Attach a rope or chain to the tail tiedown, and secure to a ground
anchor.
8. If additional security is desired, attach a rope (no chains or
cables) to the nose gear torque link and secure to a ground
anchor.
9. If dusty conditions exist, or the last flight of the day has been
completed, install the two engine inlet covers to protect the
engine from debris. The covers may be installed after the engine
has cooled down (ITT indicator showing “off scale”
temperature).
10. To prevent the propeller from windmilling, install the propeller
anchor over a blade of the propeller and secure its anchor strap
around the nose gear or to the bracket located on the lower right
hand cowl.
JACKING
When a requirement exists to jack the entire airplane off the ground, or
when wing jack points are used in the jacking operation, refer to the
208 Maintenance Manual, Chapter 7-10-0, Jacking - Maintenance
Practices, for specific procedures and equipment required.
Anytime the cargo pod is installed, if the main gear to fuselage fairings
are removed, jacks can be positioned adjacent to the sides of the cargo
pod and raised to engage the receptacle on the end of the jacks over
the head of the outboard bolt which secures the main gear attach
trunnion bearing cap (aft) on the left and right gear. These jacking
locations serve essentially the same purpose as the fuselage jack
points at the main gear supports. An additional jack point on each main
gear axle fitting is used primarily when the cargo pod is installed and it
is desired to jack a single main gear for tire replacement, etc. If desired,
jack stands with wing jack pads may be fabricated so that the front wing
spar at WS 141.2 or 155.9 on each wing may be used as jacking
locations. A tail jack must be used in conjunction with wing jacking.
JACKING (Continued)
CAUTION
• A tail jack stand must be used when conducting
maintenance inside the tail section, and should be
installed in most jacking operations. Be sure the
stand is suitably heavy enough to keep the tail stable
under all conditions and is strong enough to support
the airplane. Placing a jack stand under the nose
jack point (if not used for jacking) will provide
additional stability.
• Do not use cargo pod structure for jacking or as a
blocking surface.
• Raise the airplane no more than required for the
maintenance being performed.
• Jack base must be level and jack cylinder vertical at
start of jacking operations.
In some instances (i.e. off-runway landing, collapsed gear, etc.) it may
be necessary to use overhead means to lift (hoist) the airplane, to be
followed with jacking at the jack points. Refer to the 208 Maintenance
Manual, Chapter 7-10-01, Emergency Lifting - Maintenance Practices,
and Chapter 7-10-0, Jacking - Maintenance Practices for specific
procedures and equipment required.
LEVELING
Longitudinal leveling of the airplane for weighing will require that the
main landing gear be supported by stands, blocks, etc., on the main
gear scales to a position at least four inches higher than the nose gear
as it rests on an appropriate scale. This initial elevated position will
compensate for the difference in waterline station between the main
and nose gear so that final leveling can be accomplished solely by
deflating the nose gear tire.
NOTE
Since the nose gear strut on this airplane contains an oil
snubber for shock absorption rather than an air/oil shock
strut, it cannot be deflated to aid in airplane leveling.
The pilot’s seat rails can also be used for longitudinal leveling by
moving the pilot’s seat to the most forward position and placing the
level on top of (and parallel to) seat rail, just aft of pilot’s seat. Observe
level indication and deflate nose gear tire (if placed on scales) or adjust
jacks to center bubble in level.
To level airplane laterally, center a spirit level across the seat rails just
aft of crew doors, removing carpet if necessary. Observe level
indication and deflate main gear tire to properly center bubble in level.
Refer to the 208 Maintenance Manual, Chapter 8-20-00, Leveling -
Maintenance Practices, for specific procedures and equipment
required.
OIL SPECIFICATION
APPROVED OILS
Figure 8-1
OIL CAPACITY
Total: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 U.S. QUARTS (13.2 I)
(including filter, cooler, and hoses)
Drain and Refill Quantity: . . . . . . . . . . . . . 9.5 U.S. QUARTS (9.0 l)
(approximately)
WARNING
Make sure oil dipstick cap is securely latched
down. Operating the engine with less than the
recommended oil level and with the dipstick cap
unlatched will result in excessive oil loss and
eventual engine stoppage.
NOTE
To obtain an accurate oil level reading, it is recommended
the oil level be checked within 10 minutes after engine
shutdown while the oil is hot (MAX HOT marking) or prior to
the first flight of the day while the oil is cold (MAX COLD
marking). If more than 10 minutes has elapsed since
engine shutdown and engine oil is still warm, perform an
engine dry motoring run before checking oil level.
Figure 8-2
FUEL ADDITIVES
One of the following fuel system anti-ice additives must be added to the
fuel as noted at the following concentrations. Use of fuel anti-ice
additives is required if freezing temperatures are expected during any
part of the flight. Use of an approved Static Dissipator or Biocide is
recommended but not required.
CAUTION
• JP-5 fuels per MIL-T-5624 and JP-8 fuel per MIL-T-
83133A contain the correct premixed quantity of an
approved type of anti-icing fuel additive and no
additional anti-ice compounds should be added.
• Proper mixing of EGME or DIEGME compound with
the fuel is extremely important. A concentration in
excess of that recommended (0.15% by volume
maximum) will result in detrimental effects to the fuel
tanks, such as deterioration of protective primer and
sealants and damage to o-rings and seals in the fuel
system and engine components.
• Use only blending equipment that is recommended
by the manufacturer to obtain proper proportioning.
WARNING
Anti-icing additives containing Ethylene Glycol
Monomethyl Ether (EGME) are harmful if inhaled,
swallowed, or absorbed through the skin, and will
cause eye irritation. It is also combustible. Before
using this material, refer to all safety information on
the container.
CAUTION
• Diethylene Glycol Monomethyl Ether (DIEGME) is
slightly toxic if swallowed and may cause eye
redness, swelling and irritation. It is also
combustible. Before using this material, refer to all
safety information on the container.
• Make sure the additive is directed into the flowing
fuel stream with the additive flow started after the
fuel flow starts and stopped before fuel flow stops.
Do not allow concentrated additive to contact coated
interior of fuel tank or airplane painted surface.
• Use a minimum of 20 fluid ounces of additive per
156 gallons of fuel and a maximum of 20 fluid
ounces of additive per 104 gallons of fuel.
CAUTION
If the fuel additive concentration has fallen below
0.035% by volume, the airplane should be defueled and
refueled.
BIOCIDAL PROTECTION
FUEL CAPACITY
TOTAL FUEL
Both Tanks and Reservoir: . . . . . . . . . . 339.1 U.S. Gallons (1283 l)
Both Tanks: . . . . . . . . . . . . . . . . . . . . . . 335.6 U.S. Gallons (1270 l)
Each Tank: . . . . . . . . . . . . . . . . . . . . . . . 167.8 U.S. Gallons (635 l)
CAUTION
To obtain accurate fuel quantity indicator readings,
verify the airplane is parked in a laterally level condition,
or, if in flight, make sure the airplane is in a coordinated
and stabilized condition.
FUEL CONTAMINATION
Fuel contamination is usually the result of foreign material present in
the fuel system and may consist of water, rust, sand, dirt, microbes, or
bacterial growth. In addition, additives that are not compatible with fuel
or fuel system components can cause the fuel to become
contaminated.
Before each flight and after each refueling, use a clear sampler cup and
drain at least a cupful of fuel from each inboard fuel tank sump quick
drain valve, fuel tank external sump quick drain valve, the fuel reservoir
quick drain valve (actuated by a push-pull drain control on cargo pod),
and fuel filter quick-drain valve to determine if contaminants are present
and ensure the airplane has been fueled with the proper fuel. If the
airplane is parked with one wing low on a sloping ramp, draining of the
outboard fuel tank sump quick-drain valves (if installed) is also
recommended.
If contamination is detected, drain all fuel drain points again. Take
repeated samples from all fuel drain points until all contamination has
been removed. If, after repeated sampling, evidence of contamination
still exists, the airplane should not be flown. Tanks should be drained
and system purged by qualified maintenance personnel. All evidence of
contamination must be removed before further flight. If the airplane has
been serviced with the improper fuel grade, defuel completely and
refuel with the correct grade. Do not fly the airplane with contaminated
or unapproved fuel.
WARNING
• It is the pilot’s responsibility to make sure that
the airplane’s fuel supply is clean before flight.
• Do not fly the airplane with contaminated or
unapproved fuel.
• Any traces of solid contaminants such as rust,
sand, pebbles, dirt, microbes and bacterial
growth or liquid contamination resulting from
water, improper fuel type, or additives that are
not compatible with the fuel or fuel system
components must be considered hazardous.
• Carefully sample fuel from all fuel drain locations
during each preflight inspection and after every
refueling.
SERVICING
COMPONENT CRITERIA
Nosewheel (22 x 8.00-8, 6-Ply Rated Tire) 30.0 - 42.0 PSI
Main Wheel (8.50-10, 8-Ply Rated Tire) 53.0 - 57.0 PSI
Main Wheel (29 x 11.00-10, 10-Ply Rated Tire) 35.0 - 45.0 PSI
Brakes MIL-H-5606 (Note 1)
Nose Gear Shock Strut MIL-H-5606 (Note 2)
NOTE
1. Service brake fluid reservoir with MIL-H-5606 hydraulic fluid as
placarded on reservoir. Maintain fluid level between MIN and
MAX markings.
2. Keep strut filled with MIL-H-5606 hydraulic fluid per filling
instructions placard. No air pressure is required in strut.
Figure 8-3
NOTE
Refer to Section 9, Supplement 6 for additional information
on the oxygen system installed on your airplane.
WARNING
Type II, Type III, and Type IV anti-ice fluid is
designed for use on airplanes with a VR speed of 85
knots or greater. Whenever Type II, Type III, or Type
IV anti-ice fluid is applied to the airplane, the takeoff
flap setting is limited to UP and the VR is 88 KCAS
(83 KIAS). Refer to Section 2, Limitations, Type II,
Type III, and Type IV Anti-Ice Fluid Takeoff
Limitations and Section 5, Performance, Figure 5-11
and Figure 5-27, for Flaps Up Takeoff Distances and
liftoff speeds in KIAS. Figures 5-11 and 5-27, Flaps
Up Takeoff Distance charts start with the airplane’s
maximum weight for normal operations.
NOTE
It is recommended that flight crews refamiliarize
themselves seasonally with the following publications for
expanded deice and anti-ice procedures:
The procedure involves applying Type II, Type III, or Type IV anti-ice
fluid to make sure the airplane remains clean after deicing. Type II,
Type III, or Type IV fluid is used to provide longer-term anti-icing
protection. Type I, Type II, Type III, and Type IV fluids have time
limitation before refreezing begins, at which time additional deicing is
required. This time limitation is referred to as “holdover time”. Because
holdover time depends highly on a number of factors, charts can
provide only approximate estimates. It remains the responsibility of the
pilot-in-command to determine the effectiveness of any deicing or anti-
icing procedure. Refer to FAA notice 8900.196, dated 8-16-12 or later
for Type I, Type II, Type III or Type IV fluids.
CAUTION
Type I, Type II, Type III, and Type IV fluids are not
compatible and may not be mixed. Additionally, most
manufacturers prohibit the mixing of brands within a
type. However, the same spray equipment may apply
Type I and Type III fluids. Line personnel should be
supervised by the pilot in command to ensure proper
application of Type I deice, and Type II, Type III, or
Type IV anti-ice fluids.
Application techniques for Type II, Type III, and Type IV fluids are the
same as Type I, except that since the airplane is already clean, the
application should last only long enough to properly coat the airplane
surfaces. However, Type II, Type III, or Type IV fluid is sometimes
heated and sprayed as a deicing fluid. For this case, it should be
considered a Type I fluid as the heat may change the characteristics of
the thickening agents in the fluid. Therefore, Type II, Type III, or Type IV
fluid applied in this manner will not be as effective as it would be if it
were applied at ambient temperature.
CAUTION
Type I fluids should never be used full strength
(undiluted). Undiluted glycol fluid is quite viscous below
14°F (-10°C) and can actually produce lift reductions of
about 20 percent. Additionally, undiluted glycol has a
higher freezing point than a glycol/water mixture.
NOTE
• Deicing and anti-icing procedures must be closely
coordinated between the pilot in command and ground
crews, and carried out in a timely manner. Ultimate
responsibility for safety of flight rests with the pilot in
command, and any decisions to deice or anti-ice an
airplane must be accomplished under his or her direct
supervision.
• The first area to be deiced and anti-iced must be visible
from the cockpit and must be used to provide a
conservative estimate for subsequent ice accumulations
on unseen areas of the airplane before initiating takeoff.
• Due to the weight and C.G. changes that occur while
deicing the airplane, a tail stand must be placed under
the tail to prevent the airplane from tipping on its tail.
NOTE
The SAE no longer publishes HOT guidelines.
CAUTION
• Aircraft operators are solely responsible for ensuring
that holdover timetables contain current data.
• The tables are for use in departure planning only and
should be used in conjunction with pretakeoff
contamination check procedures.
• The time of protection will be shortened in heavy
weather conditions. High wind velocity and jet blast
may cause a degradation of the protective film. If
these conditions occur, the time of protection may be
shortened considerably. This is also the case when
fuel temperature is significantly lower than OAT.
NOTE
• Holdover timetables in FAA Notice 8900.196, dated
11-25-09 or later do not apply to other than SAE or ISO
Type I, Type II, Type III or Type IV fluids.
• The responsibility for the application of this data remains
with the user.
WARNING
When ground icing conditions are present, a
pretakeoff contamination check must be conducted
by the pilot in command within 5 minutes of takeoff,
preferably just prior to taxiing onto the active
runway. Critical areas of the airplane such as
empennage, wings, windshield, control surfaces,
and engine inlets must be checked to make sure
they are free of ice, slush, and snow and that the
anti-ice fluid is still protecting the airplane.
WARNING
When ground icing conditions are present, a
pretakeoff contamination check should be
conducted by the pilot in command within 5
minutes of takeoff, preferably just prior to taxiing
onto the active runway. Critical areas of the
airplane such as empennage, wings, windshield,
control surfaces, and engine inlets should be
checked to make sure they are free of ice, slush,
and snow, and that the anti-ice fluid is still
protecting the airplane.
NOTE
• Freezing point of Type III fluid mixture must be at least
7°C (13°F) below OAT.
• Holdover time starts when last application has begun.
• Application techniques for Type III fluid are the same as
for Type I, except that since the airplane is already
clean, the application should last only long enough to
properly coat the airplane surfaces.
• Type III fluid must be applied undiluted at ambient
temperature to a “clean” airplane within 3 minutes after
deicing is completed due to the limited holdover times of
Type I deice fluid. However, Type III fluid is sometimes
heated and sprayed as a deicing fluid. For this case, it
should be considered a Type I fluid, as the heat may
change the characteristics of the thickening agents in the
fluid. Therefore, Type II fluid applied in this manner will
not be as effective as it would be if it were applied at
ambient temperature.
WARNING
When ground icing conditions are present, a pre-
takeoff contamination check must be conducted by
the pilot in command within 5 minutes of takeoff,
preferably just prior to taxiing onto the active
runway. Critical areas of the airplane such as
empennage, wings, windshield, control surfaces,
and engine inlets must be checked to make sure
they are free of ice, slush, and snow and that the
anti-ice fluid is still protecting the airplane.
CAUTION
The time of protection will be shortened in heavy
weather conditions. Heavy precipitation rates, high
moisture content, high wind velocity, or jet blast may
reduce holdover time below the lowest time stated in
the range. Holdover time may be reduced when
airplane skin temperature is lower than OAT.
NOTE
• Freezing point of Type IV fluid mixture must be at least
7°C (13°F) below OAT.
• Holdover time starts when last application has begun.
• Application techniques for Type IV fluid are the same as
for Type I, except that since the airplane is already
clean, the application should last only long enough to
properly coat the airplane surfaces.
• Type IV fluid can be applied undiluted at ambient
temperature to a “clean” airplane within three minutes
after deicing is completed, due to the limited holdover
times of Type I deice fluid. Type IV fluid is however,
sometimes heated and sprayed as a deicing fluid. For
this case, it should be considered a Type I fluid, as the
heat may change the characteristics of the thickening
agents in the fluid. Type IV fluid therefore, applied in this
manner, will not be as effective as it would be if it were
applied at ambient temperature.
CAUTION
• Some Type IV fluids could form a thick or high
strength gel during “dry-out” and when rehydrated
can freeze restricting movement of flight control
surfaces, while in flight.
• Some Type IV fluids exhibit poor aerodynamic
elimination (flow-off) qualities at colder
temperatures.
• Heated areas of airplane (i.e., heated pitot tubes and
stall warning vanes) should be avoided due to the
fact that fluid may “dry-out” into hard globular
nodules.
NOTE
1. Give special attention to the gaps between the flight controls.
All snow, ice, and slush must be removed from these gaps.
2. Remove snow, ice and slush from pitot tubes by hand only.
Figure 8-4
NOTE
Anti-ice fluid must be applied at low pressure to form a thin
film on surfaces. Fluid must just cover airplane without
runoff.
DIRECT SPRAY AVOIDANCE AREAS:
Pitot-Static Tubes, Windshields, Cabin Windows, and Stall Warning
Vane.
Figure 8-5
Figure 8-6
NOTE
By starting the deice and anti-ice application at the left front
area of the airplane, the pilot can then get a conservative
estimate of how quickly ice forms by observation from
inside the cockpit. Because the cockpit is the first area
deiced or anti-iced, it will be the first area where ice will
form again.
Figure 8-7
PAINTED SURFACES
The painted exterior surfaces of the Cessna 208B have a durable, long-
lasting finish. Approximately 10 days are required for the paint to cure
completely; in most cases, the curing period will have been completed
prior to delivery of the airplane. In the event that polishing or buffing is
required within the curing period, it is recommended that the work be
done by someone experienced in handling uncured paint. Any Cessna
Authorized Service Facility can accomplish this work.
Generally, the painted surfaces can be kept bright by washing with
water and mild soap, followed by a rinse with water and drying with
cloths or a chamois. Harsh or abrasive soaps or detergents that cause
corrosion or scratches must never be used. Remove stubborn oil and
grease with a cloth moistened with Stoddard solvent.
MAINTENANCE PROCEDURES
The following procedures provide the most current information
regarding cleaning and servicing windshields and windows. Improper
cleaning or use of unapproved cleaning agents can cause damage to
these surfaces.
CLEANING INSTRUCTIONS
CAUTION
• Windshields and windows (acrylic-faced) are easily
easily damaged by improper handling and cleaning
techniques.
• Do not use methanol, denatured alcohol, gasoline,
benzene, xylene, methyl n-propyl ketone, acetone,
carbon tetrachloride, lacquer thinners, commercial or
household window cleaning sprays on windshields
or windows.
1. Place airplane inside hangar or in shaded area and allow to cool
from heat of sun’s direct rays.
2. Using clean (preferably running) water, flood the surface. Use
bare hands with no jewelry to feel and dislodge any dirt or
abrasive materials.
CAUTION
When applying and removing wax and polish, use a
clean, soft cloth, such as cotton or cotton flannel.
8. A Cessna approved rain repellent and surface conditioner may
be used to increase the natural cleaning of the windshield during
rain. Apply in accordance with manufacturers instructions.
Caution must be used not to get rain repellent on painted
surfaces surrounding the windshield.
CAUTION
REPCON is the only rain repellent conforming to
Federal Specification MIL-W-6862 that is approved to
use on Cessna Model 208 series airplanes.
CAUTION
Utilization of the following techniques will help minimize
windshield and window crazing.
1. Keep all surfaces of windshields and windows clean.
2. If desired, wax acrylic surfaces.
3. Carefully cover all surfaces during any painting, powerplant
cleaning or other procedure that calls for the use of any type of
solvents or chemicals.
4. The following coatings are approved for use in protecting
surfaces from solvent attack:
a. White Spray Lab, MIL-C-6799, Type I, Class II.
b. WPL-3 Masking Paper - St. Regis, Newton, MA.
c. 5 X N - Poly-Spotstick - St. Regis, Newton, MA.
d. Protex 40 - Mask Off Company, Monrovia, CA and
Southwest Paper Co., Wichita, KS.
e. Protex 10VS - Mask Off Company, Monrovia, CA and
Southwest Paper Co., Wichita, KS
f. Scotch 344 Black Tape - 3M Company
5. Do not park or store the airplane where it might be subjected to
direct contact with or vapors from: methanol, denatured alcohol,
gasoline, benzene, xylene, MEK, acetone, carbon tetrachloride,
lacquer thinners, commercial or household window cleaning
sprays, paint strippers, or other types of solvents.
6. Do not use solar screens or shields installed on inside of airplane
or leave sunvisors up against windshield. The reflected heat from
these items causes elevated temperatures which accelerate
crazing.
7. Do not use power drill motor or powered device to clean, polish,
or wax surfaces.
NOTE
1. These are the only polishing waxes tested and approved for
use by Cessna Aircraft Company.
2. This is the only rain repellent approved for use by Cessna
Aircraft Company for use on Cessna Model 208B series
airplanes.
Figure 8-8
PROPELLER CARE
Always conduct a preflight inspection and occasionally wipe the blades
with a cloth dampened with oil to clean off grass and bug stains,
minimize corrosion, and assure a longer blade life. Waxing the blades
with an automotive type paste wax on a regular basis will further
minimize corrosion. Damaged or blistered paint must be repainted.
During the preflight inspection, check the blades for nicks, gouges,
scratches, corrosion pits, etc., the propeller hub for evidence of grease
and oil leaks, and the propeller spinner for condition and security.
Repair of small nicks and scratches may be performed by qualified
mechanics in accordance with procedures specified in FAA Advisory
Circular 43.13-1A. However, whenever a significant amount of metal is
removed, or in the case of previously reworked blades that may be at or
near minimum width and thickness limits, the appropriate Hartzell
Service Manual must be consulted to determine if minimum allowable
blade width and thickness limits have been exceeded. If these limits are
exceeded, blade replacement is required. After filing and polishing, the
damaged area must be inspected by the dye penetrant method to verify
that all damage has been removed and the blade is not cracked. The
area should then be reprotected by localized application of chemical
film per MIL-C-5541 (e.g., Alodine) and repainted as necessary. Large
nicks or scratches or other damage involving such things as bent
blades, balance, diameter reduction, etc. must be corrected by an FAA
approved propeller repair station.
ENGINE
ENGINE EXTERIOR/COMPARTMENT CLEANING
ENGINE (Continued)
ENGINE COMPRESSOR WASH (Continued)
CAUTION
Observe engine starting cycle limits when conducting
motoring wash procedures. Refer to Section 2,
Limitations, Powerplant Limitations, for details on
Engine Starting Cycle limits.
A number of cleaning agents are recommended for addition to water to
form the cleaning solution used for compressor wash. However, the
mixture proportion of all the cleaning agents is not identical. Depending
on the prevalent ambient temperature, aviation kerosene and methanol
must be added to the cleaning solution in various proportions. The
quality of the water used is also important; any drinking quality water is
permissible for a motoring wash, but demineralized water only is
recommended for a running wash. Detailed information concerning the
cleaning mixture components, mixture formulation, recommended
quantity and application equipment can be found in Pratt & Whitney
Aircraft Gas Turbine Operation Information Letter No. 7.
ENGINE (Continued)
COMPRESSOR TURBINE BLADE WASH
INTERIOR CARE
The instrument panel, control wheel, and control knobs need only be
wiped off with a damp cloth. Oil and grease on the control wheel and
control knobs can be removed with a cloth moistened with Stoddard
solvent. Volatile solvents must never be used since they soften and
craze the plastic.
CAUTION
Do not use any of the following solvents for cleaning of
the interior or interior components: methanol,
denatured alcohol, gasoline, benzene, xylene, MEK,
acetone, carbon tetrachloride, lacquer thinners,
commercial or household window cleaning sprays.
When in doubt about any product, do not use it.
The plastic trim, headliner, door panels, and floor covering in the crew
area of both versions and the rear cabin headliner and sidewalls of the
Passenger Version need only be wiped off with a damp cloth. In Cargo
Versions, the sidewalls, cargo doors, and overhead in the cargo area
are not easily soiled or stained. Dust and loose dirt must be picked up
with a vacuum cleaner. Stubborn dirt can be wiped off with a cloth
moistened in clean water. Mild soap suds, used sparingly, will remove
grease. The soap must be removed with a clean damp cloth.
To remove dust and loose dirt from the upholstery and carpet, clean the
interior regularly with a vacuum cleaner.
Blot up any spilled liquid promptly with cleansing tissue or rags. Don't
pat the spot; press the blotting material firmly and hold it for several
seconds. Continue blotting until no more liquid is taken up. Scrape off
sticky materials with a dull knife, then spot clean the area.
Soiled upholstery and carpet may be cleaned with foam type detergent,
used according to the manufacturer's instructions. To minimize wetting
the fabric, keep the foam as dry as possible and remove it with a
vacuum cleaner.
The protective plywood floor panels (if installed) and aft bulkhead
covering in the cargo area must be vacuum cleaned to remove dust
and dirt. A cloth moistened with water will aid in removing heavy soil.
Do not use excessive amounts of water, which would deteriorate the
protective floor panels.
AVIONICS CARE
The Garmin GDU displays have an anti-reflective coating that is very
sensitive to skin oils, waxes, ammonia, and abrasive cleaners. Clean
the displays as described in the Garmin G1000 Cockpit Reference
Guide.
CAUTION
Under no circumstances should preservative oil be
sprayed into the compressor or exhaust ports of the
engine. Dirt particles deposited on blades and vanes
during engine operation will adhere and alter the airfoil
shape, adversely affecting compressor efficiency.
a. 0 to 7 Days - The engine may be left in an inactive state,
with no preservation protection, provided the engine is
sheltered, humidity is not excessively high, and the engine
is not subjected to extreme temperature changes that would
produce condensation.
b. 8 to 28 Days - An engine inactive for up to 28 days requires
no preservation, provided all engine openings are sealed off
and relative humidity in the engine is maintained at less than
40%. Humidity control is maintained by placing desiccant
bags and a humidity indicator on wooden racks in engine
primary exhaust duct. Suitable windows must be provided in
the exhaust closure to facilitate observation of the humidity
indicators.