Tac69 04
Tac69 04
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current interest
ifiTfiCH
APRIL 1969 THUNDERBIRDS -
Vol. 9 No. 4 THE FLIGHT LEADERS Pg 4
departments
Angle of Attack Pg 3
Pilot of Distinction Pg 8
TAC Tips Pg 12
editor Chock Talk Pg 24
Mai Bill Richardson Pg 29
Crew Chief/Maintenance Man
assistant editor Letters Pg 30
Don Reynolds TAC Tally Pg 31
art editor
Stan Hardison
TACRP 127-1
layout & production Articles, accident briefs, and associated material in this magazine are non-direc-
tive in nature. All suggestions and recommendations are intended to remain within the
scope of existing directives. Information used to brief accidents and incidents does
TSgt John K. Miller not identify the persons, places, or units involved and may not be construed as in-
criminating under Article 31 of the Uniform Code of Military Justice. Names, dates,
and places used in conjunction with accident stories are fictitious. Air Force units
editorial assistant are encouraged to republish the materiel contained herein; however, contents are not
for public release. Written permission must be obtained from HQ TAC before material
Monello W. Andrews may be republished by other than Department of Defense organizations.
Contributions of articles, photos, and items of interest from personnel in the field
are encouraged, as ere comments and criticism. We reserve the right to edit all manu-
scripts for clarity and readability. Direct communication is authorized with: The Edi-
tor, TAC ATTACK, HQ TAC (OSP), Langley AFB, Va. 23365.
printing Distribution F, Controlled by OSP - TAC Publications Bulletin No. 22, d
Hg TAC Field Printing Plant June 1966 Autovon 250-2937
Angle of ATTACK
A?~/~
R. l. LILES, Colonel, USAF
Chief of Solely
Thunderbirds The Flight Leader by Maj Joe Moore
(ontrary to the views held by some. no one For example: Strong self-discipline encompasses
becomes a flight leader automatically, or courage in that courage is most often measured in
overnight. It is definitely a "walk-before-run" terms of ability to control iear. In one word , I
process and demands that a pilot be a good like to call it "heart." Many people ca ll
follower (i.e. wingman) first. The job of being a themselves fighter pilots because they can "drive"
VSH fighter pilot requires certain intangible a hot pursuit around the sky, bu t a real f igh ter
qualities such as a different personal philosophy pilot demonstrates the things I am talking about.
than usually expressed by other than fighter While a rare few fighter pilots may be born1
pilots. maximum aggressiveness- tempered by most are developed and trained. Some never cut
"smart .. and "j u d g men t. " de t. ermined it! The same is true of flight leaders. and some oi
self-reliance. and strong discipline. You may them never cut it! How many of you have flown
consider that a few virtues have been omitted, but behind a squadron commander that has bee~
in nly evaluat ion . these factors are all inclusive fighter pilot (and a good one) for umpty·•
4 APRIL 1969
~; yet, he unnecessarily Jed you over one of Each demonstration pilot is a specialist in his
heaviest AAA concentrations in position. Positions are not exchanged, and spare
'Vmf.know-where? Or the flight commander with pilots are not used. Each one becomes intimately
years of experience and thousands of hours, but knowledgeable of the peculiarities in technique
he took you through the same flak three times and procedures that the leader uses. Though radio
while hunting for the target? That is the transmissions are used to assist in anticipation of
pay-off: be it good or bad. maneuvers, each one is performed the same
What. then, makes an effective and efficient way- every time. The leader can do almost
flight leader? We could probably fill this entire anything with the diamond, and the wingmen will
issue with requirements. To my mind, there are a always be there; but, the more skillfully and the
few broad statements that seem to cover it pretty smoother he flies. rhe easier the task of the
well.
First, as previously mentioned, a good flight
leader must have demonstrated that he is a good
follower. Invariably, a pilot learns more about
good and bad lead techniques while on the wing,
than when actually leading.
Second, he must be a skillful, smooth, and safe
pilot.
Third, a flight leader must be a hard
taskmaster, demanding of perfection, but capable
of teaching his wingmen how to achieve it.
Fourth, he must be an exceptional detail
pb:mner. While many planning tasks can be
ated to flight members, the leader must
\..__.... € thoroughness and accuracy. These, in turn,
insure safe accomplishment.
Fihh and last, a successful flight leader must
be flexible. able to think ahead of the present,
and quick to make safe decisions in the air.
In the demonst(ation mission, the task of
being flight leader is not unlike combat, except
the spectators do not shoot - yet! But, then the
task of being a flight leader anywhere should be
like that. During an air show, the difference
between a "1+" and a "2·" (our grading on a scale
of l+ to 5-) often results from the leader's
performance. Show centering, timing, altitudes.
maneuver accomplishment. and a multitude of
other considerations are his responsibility.
During training, practice, and even official
demonstrations. he must be quick to criticize the
smallest error, but with advice and
encouragement of instructional value. This is
continuous. To achieve the optimum in precision
and perfection. briefings and debriefings must be
laboriously detailed. painfully thorough and
·hly critical, but objectivity and team
\.,__.,jeniafity are never lost.
TACATTACK 5
desirable. On a cool day at low elevation, ...---......
the flight leader leader may elect to continue a loop at 380. (.
wingmen. The safer he is, the more confidence hot day at high elevation, the leader may elect to
the wingmen have in him. abort a loop at 400 Kl AS. While the diamond can
Planning is one of the most significant factors top a loop at surprisingly low airspeed, the
affecting the success of a demonstTation. Aerial formation may not be the most precise, or the
photographs and large scale topographical charts loop pattern may be poor. It very, very seldom
are used to survey the show site and plan the happens that maneuver parameters are not
safest and most impressive show line. Very similar satisfied, but the flight leader must always be
to target: study! Once the ground planning is prepared to make the right decision.
accomplished, the leader surveys the show site One additional factor that comes to mind, as
from a light aircraft or helicopter. He checks the this article is closed, is that of confidence.
show line, obstructions in the area, proximity to Wingmen must be inspired by and have
densely populated areas, references for aligning confidence in their leader. A leader can only earn
on the show line and the bomb-burst cross-point. this by performance. On the backside of a loop, if
and other features pertinent to a safe, successful the leader says, "We aren't going to make it," the
demonstration. Briefing.s are, as mentioned, whole formation starts to bobble. All he may
complete. Peculiarities of the show site are have meant was that he had drifted off the show
discussed and obstructions pointed out. line and was not going to get back to it. His
Flexibility, thinking ahead, and decisions in choice of words and tone of voice must inspire
the air are factors that make or break an air show confidence.
and increase the safety of the performance. The So, where a.re we emerging from this rambling?
whifferdill turn is the key phase of every Summarizing- you must have "heart;" you must
maneuver sequence. Airspeed and altitude learn to be the best "follower" around to ear~
parameters are determined by the whitferdill. If it shot at leading a flight; and you must de•
is not planned and performed properly, the every thought and action to making it easy, so._,
following maneuver may be poor, or the flight and productive for your wingmen when you are a
may not even have satisfied the airspeed flight leader. Never assume it is your right to lead
requirements for the maneuver. For by virtue of rank, hours, or years in the business.
example: 380 KIAS is the absolute minimum for In combat. you may have a difficult time finding
entering a diamond loop, 400 KlAS is minimum people that want to fly on your wing. -->
Major Joe Moore began his Air Force career as Fighter Weapons School. Then, while temporarily
an Aviation Cadet in 1955, graduating in June attached to the Fighter Weapons School, Major
1956 at Bryan AFB, Subsequent assignments Moore was sent to SEA as a part of the F-4
included instructing in the T-33 at laredo AFB Tactics Team. During their thirty day tour, he
and F-86 fighter-gunnery at Williams AFB, flew 21 combat hours with 6 missions over the
followed by three and a half years with the 81 st North.
TFW in England flying the F-101. In July 1963, Major Moore attended Air Command and Staff
he joined the 44S3rd CCTS at MacDill and College at Maxwell AFB from August 1966 to
became one of the initial group of Air Force F-4 June 1967. A month later, he was back in SEA
instructor pilots. flying F-4s with the 8th TFW at Ubon. He flew
He earned his Bachelor's Degree at the 135 combat missions, 100 over North Vietnam.
University of Omaha in March 1965, under the His decorations include the Silver Star and the
Bootstrap program. Later in the year, while TOY Distinguished Flying Cross with two Oak Leaf
from the 4453rd CCTW at Oavis-Monthan, he Clusters. He joined the Thunderbirds in May
completed fighter tactics training at the USAF 1968.
6 APRIL 1969
UNIT ARDS
1968 TAC GROUND SAFETY AWARD:
Category 1
516 Tactical Airlift Wing, Dyess AFB, Texas
Category 2
USAF Tactical Air Warfare Center, Eglin AFB, Flordia
gable/lien
Maj J. L. Graber
Major Jack L. Graber of the 23d Tactical vibrations continued Major Graber realized he
Fighter Wing, McConnell Air Force Base, Kansas, could not reach his base in a partial-power glide.
has been selected as a Tactical Air Command Pilot He moved the starting fuel switch to manual and
of Distinction. engine rpm increased to 78 percent. Engine
Major Graber was flying in-trail formation in vibrations increased, accompanied by grinding
the rear seat of a T-33. A sudden, extremely noises and oil pressure dropped to two psi.
heavy engine vibration required him to retard the However, the additional rpm provided the needed
throttle to a mid-range setting in order to reduce thrust to reach his base. Gear and flaps were
the vibration. This, and subsequent throttle lowered normally and he made a successful
changes, failed to stop the vibration. Suddenly, the landing.
engine flamed out. An airstart using the gang-start Major Graber's skillful performance during this
system was successful, but maximum throttle critical inflight emergency readily qualifies him
position produced only 55 percent. As engine Tactical Air Command Pilot of Distinction.
8 APRIL 1969
Munitions
Load Crew
TER mounted M-117s ate torqued secure as the third bomb rolls toward the pylon. Fuze mlsllandlina Is hazardous and
After pylon is loaded, No. 2 man rigs arming wires and Installs nose and tail fuzes. can cause dud delivery.
Torquing sway braces tight is not
good enough. Properly calibrated
tool assures even pressure on all
btaces; prevents hangups and in·
advertent release.
One of the last procedures Is inserting ejection cartridges. Again, totQut Is vital. Cartridge caps
must be lilted tight enough to make good electrical contact. Rlaht: Body position is critical while
torquing ejection rack carllldges. Standing offset from cartridge caps prevents serious Injury should
the explosive Inadvertently fire.
its laurels. Moisture in a release timed or rigged fuze could mean critical point in flight is a direct
circuit can blow an otherwise a dud on target or destruction of route to disaster.
excellent job of loading. It's one of our own planes. An Patience and endurance are
their job to detect such a inaccurately torqued ejector important qualities for sa1e
hazard. Failure to stand in the cartridge cap could result in performance by load crews, and
right place while torquing an hung ordnance. or worse, must be added to ·their primary
ejection cartridge can mean inability to jettison stores if quality of thoroughness. Hours
serious injury if it inadvertently aerial combat is imminent. The are sometimes long. day or
fires. A checklist error by one same thing can happen because night. The ramp may be
man may endanger the welfare of poorly torqued sway braces sun-scorched, rain-soaked, or
of many others. Unlike some on MERs, TEAs. and stores. blanketed with near bfizzard
other line occupations, the This problem is most severe on snoiNS. All of this they must
hazards of careless work can takeoff when a pilot tries to accept with patience and
endanger himself as directly as jettison stores because of a flight endurance. For one quality they
the aircreiNS who depend on his problem. If the stores release cannot tolerate is negligence for
'formance. And they do. from one wing but hang up on any reason. Their life. and
;or instance. An incorrectly the other, the imbalance at this others, depend on it. ......;::..
'----
TACATTACK 11
Tac Ti[s
12 APRIL 1969
with morals, for the TAC aircrewman ...
'--
TACATTACK 13
Individual
~~~
R. L. LILES, Colonel, USAF
Chief of Safety
Tactical Air Command
14
Safety Awards for 1968
15
---
On the H-7
16 APRIL 1969
rocket makes possible a lower ballistic charge delays in the system. Actually, with adrenalin
l e seat gun (185 Gs per second vs 266 on the flowing like a fountain, a second seems like hours,
'J..r-::5) reducing probability of cracked vertebrae so be prepared for the following sequence timing
frequently encountered in the old seat. after initiating the dual ejection system from either
The H-7 also includes a different style cockpit with either lower handle or face curtain:
personnel parachute called the skysail, a 29.7-foot
slotted canopy. It provides greater shock
FRONT REAR
absorption on high speed openings eliminating SEAT SEAT
need for the G-timiter, which sometimes Shoulder harness reel retracts immediate immediate
prevented immediate chute openings vital at low Canopy blows off .75 sec .20 sec
altitudes. and provides for a lower rate of descent. Seat catapult fires 1.t5sec .30sec
All well and good, except sequence time saved by Drogue gun fires 1.90 sec 1.05 sec
Time release activates main canopy 3.40 sec 2.55 sec
discarding the G-limiter is nullified by the slower Full chute canopy lskysail@ 350 ktsl 5.2 sec 4.35 sec
opening skysail. So this fault is being corrected. Full chu te canopy (skysail@ 50 kts) 6.65 sec 5.80sec
According to OOAMA, the skysail will be replaced
soon (May or June) with a 28-foot flat canopy, The front-seater can manually reduce the
called C-9. Its rate of descent is within .40-second delay between canopy blow and seat
one-half-foot per second of the skysail but opens catapult firing by holding tension on either
a full second sooner. On zero-zero tests. it opened ejection handle until after the canopy blows.
at 186-foot altitude compared to 83 feet on the Using the lower ejection handle vs face curtain
skysail. This 100-foot leeway is mighty welcome to eject has been debated since the Phantom first·
to the guy unlucky enough to punch out on the flew. In early years, the face curtain was named
deck with some sink rate. primary, as it still is in the Navy. More recent
The H-7 conversion includes an automatic statistics show, however, that Air Force crews
·.ion sequencing system. The Dash One gives prefer the lower handle, and the Navy uses it
.....__.c operation procedures; however, aircrews about 30 percent of the time. It's st ill aircrew
who have ejected, report seemingly unexpected choice however, and there seems to be a general
acceptance that Air Force crews prefer the quick
access of the lower handle. But like most choices,
there's a trade off of credits and liabilities.
For the last minute decision, demanding
now-or-never action, valuable split seconds are
saved with the lower handle. Along with this
technique,experience records injured spines from
poor poS1ure, broken and bruised left arms from
It's the easiest thing in the world, on flailing, and occasional loss of masks and helmets.
entering the cockpit to place toe of your
flight boot atop the lower ejection But if ground contact is not a split-second
handle. Bent guards and sprung D·rings possibility, a lot can be said for the face curtain.
are almost common and no one seems to Sure it seems clumsy, but the same can be said by
notice ••. except the guy who all of a
sudden has t.o use it. That's when he surgeons who must tie minute knots with gloves
loses valuable seconds jerking free. on. Training makes the difference, and using the
face curtain is not so formidable that its benefits
should be ignored. T AC life support types
strongly recommend practicing both methods to
proficiency during seat training periods.
Proper face curtain use assures better posture.
both arrns anchored equally, and assurance that
wind blast will not take your mask and head
protection. You already know that it's not as
TACATTACK 17
on the B-7 ....
This is a no-no •• , it you want to make a clean man-seat separa- Thll is the e>nly eoueet procedure for removing face curtain
tion after ejection. Oxygen and communication luds .should be and ejection gun safety pin~. thouth ~ome aircrewmen have
placed on seit l>aek of buttoekt, In front of lumbar pad. Wilen oeen kne~wn 16 remove tMm personally before entering coc~
plated as shown, lines may hane up on seat bracket behind pad. pit. The Dbsh One IS explie:it. For aircrew safety, c ·
On separation, occupant will be twisted violently, sustain arm chier will pull pins only after occupant is strapped in,
.and neck injuries, and lose ox.ygen mask. seal adjusted to prol)&r heithl.
easily done as stated in the Dash One. If you pull letting the lever forces of your upper arms draw
with equal force on both handles, most men of your elbovvs down toward your waist. pulling the
average height will find themselves leaning face curtain taut over helmet and mask. Your
forward to get the low-stowed curtain over their back is straight and both arms and hands are
headgear. Admittedly, this is clumsy and creates anchored
poor posture. Like any new technique, the first few times
So the next time you're in the training seat, seem clumsy. With a little practice. you will feel
try it this way a few times. Grasp both handles as confident in choosing the advantages of the face
before. Your elbows will take a natural and safe curtain when time permits.
position within your shoulder width area. Now, Many F-4 jocks have transitioned from
instead of applying equal force, jerk one handle, another bird, one that uses arm rests or similarly
left or right, with a slight shoulder twist in the located handles to be pulled up for ejection.
opposite direction. leaning a little forward to There's a similar handle in the Phantom too. But
assure the curtain does not hang up on your don't let your old habits trap you into pulling it
headgear. This motion takes a split-second and to eject. It's for ground egress only! Those who
you can feel the handle stow clip break loose have inadvertently pulled this "emergency harness
from its stowed position. Now apply a double release lever" aren't around to explain what
action force that completes the sequence. Holding happened. Evidence shows that on realizing their
the pulled handle firmly, snap your head and error, they pulled the lower ejection handle next.
shoulders back against the seat. As you do this it Without assistance of leg garters, seat belts, a· ~
will be natural to equalize forces on both handles. talley reel straps, they exited their Phantom v..
18 APRIL 1969
Heart of the H-7 is rotket motor, mounted on seat bucket
bottom. Rotket nonles direct propellent lor stable escape.
Installing canopy jury struts without inserting locking pin
""''laging the thin-walled nozzles by lowerin& seat on geM
sets up a IIJUI booby trap. Upper: Strut can easily teeter
ved under seat, or setting seat on nozzles dur in& removal
lorwald a&ainst banana links. II canopy is closed from
maintenance, could cause errat ic fll&ht during ejectloa. ground, or ptessure drains off letting it lower, firing mech-
'--
anism Is Inevitably damaaed. And if Murphy has failed to
Insert safety pin, the seat eun will fire, thoufh inter lock re-
mains in position. Below: Simply inserting jury strut pin
all the grace of a nude gull in a hurricane. may save crew chief embattassment, and pilots life.
Murph's law says it will happen again. So
establishing an alternate may someday save an
already dreary si tu ation. The hardware
manufacturer was queried about using the face
cu rtain under these circumstances. Their
answer: Even with good posture and firm grip on
the curtain hand les, it 's probable that the
aircrewman, wi thout seat bel t and leg garters.
would slip out of his seat feet f irst before it
cleared the aircraft. This is an assumption based
on engineering data.
The only alternative seems to be a little old
fashioned .. going over the side. Evidently this
prob lem wasn't high on the designer's priority list
because the location of the plane's control
surfaces strains the odds for a successful manual
bailout. But when it's the only alternative, it's
vi tal. So a mental run-through is wonhwhile. But
,n't forget one important th ing if you get
........._ ~ught in this fix . Either pull the survival kit
TACATTACK 19
on the H-7....
emergency release handle, exiting without survival
gear, or be prepared to get free from the stronger
sticker clips on the H-7. During egress training,
you've experienced the tug required to overcome
the clips on H-5 training seat. These trainer seats,
by the way, hopefully will be replaced soon with
the modern version. But the point here is. the H-7
clips need about 65 pounds of force to break free,
more than twice the present training devices. So
it's recommended that you waddle out of the
seat, breaking one side loose. then the other,
before starting Dash One manual bailout
procedures.
Another problem is what to do if the canopies
fail to go after ejection is initiated. If the failure
results from a leak in the emergency pneumatic
system, the canopy emergency jettison handle
will not help. So the next best is to select canopy
open (normal system). If this does not work use
the canopy manual unlock handle. physically
pushing the canopy up into the slip stream if
face curtain initiated ejection may take a c6Uple of cabin pressure does not force it open. The sr ...--...,
seconds longer, but it•s the safest way to go. Posture charge will fire as soon as the interlock is remo"
is good, arms and hands anchored to prevent flailing, by the jettisoning canopy. Flailing arms will result
and helmet and mask are guarded from wind blast.
unless quickly restrained.
Thigh garters will soon be installed. These
work in conjunction with the standard leg garter
Scissors shackle. will not function If sptay&d with heavy
coating ot paint or preservatives. Shackle connects as noted in the Dash One and TO 13A5-32-502.
drogue ean1>py to seat until man-seat separation when It The thigh garter goes just above the knee, while
releases dr1>gue to extract personnel f)araehute. the leg garter is fastened above the boot, or
generally understood as mid-calf. The important
point is, fasten the garter below the thickest
portion of the calf to prevent it from sliding
toward the knee on retraction.
R&D is continuing on the H-7. A hard look is
being given toward improving the shoulder strap
retraction system. and in April or May a new
automatically deployed survival kit will replace
the present seat kit.
Just like the Phantom, the H-7 seat performs
within its designed envelope. High sink rates and
less than level attitudes at low a.ltitude are not
within that envelope. So pressing, even for
ejection, can be fatal. Those who made the
decision to "punch out" before leaving t ~
envelope can tell you all about it. ....>-
20 APRIL1969
~,,~-~QHIJJH/11411; & '
THtiiltJEN.t'TtJ/tN~
Moj JAMES T. BAILEY
Sth Weather Wing
Longley AFB, Virginia
7A'C ATTACR 21
thunderstorms .... suspension long enough for it to acquire a tr'~
coating of ice. The altitudes which afford L
different levels and develops the well known anvil conditions for occurrence of hail are between
top. Maximum drafts occur at fourteen to twenty 10,000 and 15,000 feet. At this time, we have no
thousand feet and often reach as high as 4500 information to indicate a direct relationship
feet per minute. Updrafts and downdrafts pass between hail occurrence and color of the cloud.
each other at these speeds causing tremendous Nor doe.s shape· or intensity of the radar echo
shear, up to 100 mph, resulting in considerable show existence of hail.
turbulence in and near the storm.
In addition to shear, which is experienced
between strong up and down flow of air, there is LijlltninJ
also a gust factor to be considered. In contrast to During an Air Force sponsored
the drafts which are relatively constant in "Thunderstorm Project," 22 percent of the
velocity, gusts are small scale variations in vertical aircraft that penetrated thunderstorms were
wind flow over small distances. Shear between the struck by lightning. In general, the damage was
drafts and gusts create an eddy effect which is limited to small punctures in the skin 'ot aircraft
responsible for the turbulence encountered when and was considered minor. Aircrews in all-metal
penetrating a thunderstorm. The degree of aircraft are safe from effect of lightning
turbulence affecting aircraft is directly discharges. However, brilliant light from lightning
proportional to airspeed. The accepted method to discharges may be temporarily blinding. Lightning
minimize effect of this turbulence is to reduce strikes have been known to produce severe errors
airspeed as much as practical in accordance with w h i c h may permanently affect magnetic
the appropriate flight manual. compasses.
Lightning will magnetize metals, rend~
compasses unreliable, actuate electrical eire•
ltinJ inadvertently, induce deafening static ir.
Icing is always a factor to be considered by headsets and temporarily blind crew members
aircraft flying in thunderstorms and can be during night missions. Predominantly, strikes
anticipated when air tempera'tUre at 11ight altitude occur below 20,000 feet and are most likely to
is at or below freezing point Clear ice is most occur in the 5,000 to 10,000 foot level. Strike
common in lower levels of cumuliform clouds as probability almost certainly coincides with
opposed to predominantly rime type found in altitude range of the cumulonimbus cloud which
higher levels. In areas of numerous is commonly found between 3,000 and 30,000
thunderstorms, icing problems may be excessive feet, occasionally higher.
due to prolonged exposure to below freezing The life cycle o1 a single cell is 20 to 90
conditions. The- effect of icing caused by minutes, however, under certain conditions a
thunderstorms does not differ from that caused series of systems will form in lines or clusters, in
by other means and should be treated in the same which there can be several storms in various states
manner. of development. What may look like one storm
may in fact be numerous cells, thus extending the
maturity span within the area tor a period of
H11il hours. During the period of time thatan area is
Hail damage is regarded as one of the worst under the influence of thunderstorms. terminal
hazards of thunderstorm flying. This phenomena conditions may lower to a point below
usually occurs during mature stages of operational minimums. Obscured ceilings and
thunderstorms when the updrafts are at high heavy rainfall will reduce low slant range
intensity. Formation of hail requires large visibilities and increase difficulties encountered in
quantities of liquid water and strong updrafts to executing approach and landing procedures. .--..
delay the fall, keeping the hail nucleus in addition, strong gusty surface winds with grl
22 APRIL 1969
variability in direction are usually present and add
to existing landing hazards caused by reduced
visibilities. Finally, heavy rainfall creates another
hazard, when accumulation of surface water on
the runway causes poor braking action and tends
to create a possible hydroplaning situation.
Several bases of this command are located
within an area of high thunderstorm frequency.
The geographical area in the CONUS with the
maximum frequency of thunderstorms lies in
central Florida and their number decreases to the
north and west. However, thunderstorm activity
is quite prevalent over all of southeastern U. S.,
the Mississippi Valley, and the central plains
MEAN ANNUAL THUNDERSTORM region throughout most of the summer months.
With these facts in mind, it is presumable that
FREQUENCY BY DAYS. most of us will encounter some thunderstorm
activity during the coming months. Keeping the
following few simple rules in mind and
remembering what we have reviewed in this
article may assist you in staying out of trouble:
1. Never fly in IFR conditions within the
immediate vicinity of thunderstorm cells if at all
possible.
2. It your aircraft is equipped with radar, USE
IT! Clear all principal storm echoes by at least
twenty miles. Remember, being radar echo-free
does NOT mean clear air. A twenty mile safe zone
has been recommended by many flying units
when circumnavigating a storm. There are
.. documented cases of aircraft being lost or
severely damaged when flying at a distance of ten
miles from the nearest echo.
3. Pay attention to severe weather warnings
and advisories. If in your weather briefing there is
no mention of them, ask the briefer just to make
sure.
4. When your destination lies within an area
MEAN ANNUAL HAIL FREQUENCY of thunderstorms or the potential for
thunderstorms exists select a good alternate.
BY DAYS. Remember, the best landing procedure to use
during a thunderstorm is to proceed to your
alternate.
5. Regardless of what stories have been passed
on through the years, there is no 100 percent
sure, safe altitude to penetrate a thunderstorm.
The best penetration technique is to go around
them; if that's not possible, turn around and go
back to where you started. __:::...
TACATTACK 23
CHOCK TALK melocts catdocauk
sticks marked with only an "add 4 quarts" line, chief was only a few inches off.
or nothing. To a transient alert crew not familiar
with the T-39, it could appear that one would add
four quarts of oil to the system when the oil level
drops to that line. There is an oil dip stick Loose Bolt
available (PN 548743) that indicates: Full, add 1
qt, add 2 qt, add 3 qt, and add 4 qt. The unit When flaps were raised on takeoff, BLC and
involved is attempting to have all their engines flashing-wheels light illuminated. Airspeed was
equipped with the marked dip stick. Sounds like a decreased and the gear was lowered, putting the
great idea. lights out. The A/C was unable to lower the flaps
by using normal procedures, the flap circuit
breaker was popped and would not reset. The
warning lights test switch was depressed and all
Communicate!! lights were normal. When changing to tower
frequency, the A/C noticed that the comm and
During night maintenance an F-101 engine nav command lights were inoperative. The
dome had been removed to facilitate repair of a warning lights test switch was depressed again.
hydraulic leak. An inspector checking the The entire panel was out. An emergency was
installation called to the mechanic, questioning declared, the flaps were blown down, and the bird
the fit, then satisfied himself that it was okay. was recovered.
Unknown to him, the mechanic, thinking that a 90 manhours to repair doesn't tell the whole
socket and rachet handle would be needed, placed story in this one. Check this list of
them inboard of the intake turn vane. The damage: wiring on TE flap actuator burned by
inspector signed off the FOD inspection, the hot BLC air, TE selector valve and flap relay
engine was started, and immediately ingested the shorted out, sheet metal damage to left TE fl
tools. flap selector valve for Y2 to full-down shorted,
24 APRIL 1969
with a maintenance slant
all left TE swivels and lines damaged by heat. hadn't caught on the first go. After getting these,
The left trailing edge 8 LC valve was he rolled upright to continue the FCF.
disconnected. The BLC valve linkage bolt was He attempted to add power but the throttle
recovered and showed no signs of failure or would not move. After retarding it slightly, he
stripping. This was the seventh flight since last again tried to advance it but it ·would not budge.
BLC maintenance. He had 75 percent, 11,000 feet. and 260 knots.
Distance from home was 85 nautical and a quick
calculation showed he could not make it from his
present position. Some quick trouble-shooting
Screwy FCF revealed a hex screw jammed between the thrott le
shaft and the inboard wall of the quadrant
An F-1 00 test pilot from another command running guide. He couldn't get his hand down far
ressed to the negative G portion of his flight enough into the slit to move the screw, nor was
"----' rolled inverted to check for debris in the the dinghy knife blade long enough. He finally
cockpit. Shortly, he noted some foreign objects used his hunting knife to move the screw forward
floating around. He caught a few, stowed them in enough to get 85 percent. At that point, he gave
his pocker and rolled upright for a while. He then up and went home. Another "whodunit" added
rolled inverted again to retrieve particles he to our FOD files. We lucked out again.
'---
TAC ATTACK 25
Battling the birdstrike problem
TEMPORARY RELIEF
PERMANENT CONTROL
Recorded distress calls played over
loudspeakers may frighten birds away, or they TAC's entomologist offers the five following
may attract the curious. At one T AC base $370 probabilities as to why birds are seen on or over
amber-beam flashing lights were installed to scare air bases:
sparrovvs and pigeons from a hangar. They were 1. In search of food or water
completely ineffective. Several years ago 2. Roosting
researchers burned tires and fired guns and set off 3. Resting or loafing
blasts to shoo the birds away from an island 4. Nesting
airport. About the only noticeable effect was 5. Passing by
feathers ruffling from blasts, provided the bird He says that ....vhen a potential bird problem
was close enough. Stuffed owls may have some exists, the following steps should be taken:
effect. or they may serve as resting places. As a 1. Identify the species and the attraction.
general rule, scare devises are most effective if 2. Ascertain if the problem is temporary,
used in variety and sporadically. Once the persistent. or recurring.
'ness or unexpected aspect ~Nears oft. most 3. Decide which measures give promise of
' - - JS aren't much impressed. being most practical . and institute same.
TACATTACK 27
birdstrike ... North America and Europe, to learn more ab ·----.
Following are some control measures to consider: bird movements and then make use of t1 ...
Eliminate dumps, drainage ditches, and information in flight planning. For example:
ponds. (Gulls apparently like dumps even better Weather and bird migration data being
than airfields. A case is on report telling of gulls correlated to better predict migration periods.
being buried alive rather than move from in front A study to d.etermine if microwaves. sent
of a garbage-covering bulldozer.) ahead of an aircraft. can disorient birds and clear
Remove potential roosting and nesting the flight path of feathered FOD.
sites -tall weeds. reeds, brush, poles with holes Time-lapse photography of radar scopes to
and decorative cover. determine bird concentrations, with aircraft
Don't landscape with berry and seed operations restricted or halted on the basis of bird
producing shrubs. intensity.
Keep grass near runways cut at the length A study on the effect of wing beat modulation
least attractive to birds. patterns on radar echoes.
Use herbicides and weedkillers to eliminate Tracking transmitter equipped whist ling
broadleaf seed plants and weeds. swans.
Obtain consultive assistance from the Tracking migrating birds w ith helicopters.
Regional Office of Sport Fisheries and Wildlife, or Use of mechanical hawks.
the T AC entomologist in the Civil Engineering
office. . .. But. until that distant day when some exotic
breakthrough solves the problem, we who fly
should be confirmed and concerned bird
WHAT'S AHEAD
watchers ... these flying feather dusters can
A great deal of effort is underway, both in really "clean your clock." ~ ...--......
28 APRIL 1969
CREW CHIEF OF THE MONTH
TSgt Price
SSgt Hambrick
'--
TAC ATTACK
YOUTHFUL READER
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UNITS
1969 1968 1969 1968 f . IQS
SPECIAL UNITS
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TACATTACK 31
ROUGH ROAD