PS Magazine - JUNE 1986
PS, The Preventative Maintenance Monthly
ISSUE 403
JUNE 1986
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/1
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UH-60A .±.
Step Lightly During Pre-Flight
Step lightly and only in designated "walk areas± when you aviators climb
up top to pre-flight your Black Hawk's main rotor head.
If you come down hard on an unsupported "no step± area, you could
easily cracK your bird's thin outer skin² The engine firewall is especially
vulnerable to misplaced brogans when the engine cowling is open²
³f you don't know a "walk area±
from a "no step± area; take a gander
at Fig 1´5 of TM 55-1520-237-23-2
before you go top-side again. It shows
stepsµ handholds and walkways as
well as "no step± areas.
Watch your step and head off
sheet metAl repair.
Special Inspections .² "
±lus or MINus 10 ²ercEnt
¶ll recurring special inspections have a tolerance of plus or minus
iO
percent from the scheduled inspection time, whether it's spelled out in your
bird's maintenance manual or not.
If your bird is due a special inspection every 150 hours, for instaNce· the
inspection must be performed between 135 and 165 hours² If it's not done
during that periodµ the bird must be grouNded with a red
"X±
until thE
inspection is completed¸
¹he tolerance on recurring special inspections does not meaN you're
authorized to overfly the inspection due date² Inspections will not be
exceeded except in MISSIOº »SS»ºTI¶L or »M»RG»ºCY situatioNs.
One´time
¼
special inspections, such as torque checKs that follow a specific
maintenaNce action, have no tolerance¸ ¹hey must be performed when du½
or the bird gets grounded²
Para 2´3b of ¹M 55´1500¾328¾25, ¶eronautical »quipment MaintenaNce
Management Policies and Procedures, has all the info oN special inspections²
52
JUNE 86
AviOnics ³.
.
The R³ COnne´µion
Be mi¿hty careful when ÀoU repÁce tÂe ÃT´823/ ÄÅÆ´Ç3Ç receÈverÉ
transmitter in its mount aboard your bird. Too mUch fÊrce can bend tÂe
pinsµ spacers and plates tÂat connect the ÃË to the on´board rÌdÈo control
set.
When that haÍ
p
ÎÏsµ yoUr avionics repairman Ès ÐÈabÐe to get bent oUt of
shaÍeµ too. That's 'cause re´solderÈng wires to broken connector ÍÈns Ès a
tedioUs anD tiresome task.
Once the ù makes contact with the connector at the rear of the moUnt,
just give it a small nudge to make a good connection.
JUNE 86
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53
T´´ muCh f´rCE
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C´NNEº¸´r P¶·¸E
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PM C´NNEC¸´r
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