PS Magazine - TB 43-PS-426
PS, The Preventative Maintenance Monthly
ISSUE 426
MAY 1988
UH-60A .
.±
u
²
l³´µ¶·¸¹º»µ¼¶½
UH-1
..
.
-±
²
³
The Pitot Can Veto!
Stop Drain, StOp PAin
I
NOT
SO FAsT, &U'±
.±²
WE²RI
Not ³´inµ a¶·wfer¸; ¹º»¼ V½u
D¾¿ÀÁ ÂÃÄ
PItor
AÅd ÆÇÈ1C LlÉ5 .Ê
I
³
A false ±irspeed re±ding c±n re±lly Ful up yoUr Bl±ck H±wk's ±Utom±Tic fLight
1
v
control system, especI±lly the movement of The st±bIl±tor.
²³±t's w³y yoU crew chie
f
s s³ould m±ke every efFrt to keep w±ter ±nd dirt ouT
of t³e pitot tU´es.
ins±alL c²veRs aF±eR
las± F³´gh± each day!
µ²Rge± c²veRs?
ËËË ÌÍ
-
ÎÏÐÑ
-
ÒÓ
DRa´n L´nes.
o
,
SlIp on T³e pitot covers ±fter t³e l±st µig³t of ¶e d±y or ±ny tIme your ·ird¸s
p±r
k
ed
0
oUtsIde fOr ±n extended period of time.
Ô
yoU FrGet t³e covers ±nd yoUr bird siTs ouTside dUring r±in or snow, yoU need
to dr±in t³e pitot ±nd st±tic lines be¹ore ºlyIng ±G±in.
²³e dr±in ports ±re loc±ted Under The cockpit, bene±t³ t³e pilot¸s ±nd copIloT¸s
se±ts.
BeFre yoU pUt the c±ps ´±ck on T³e dr±in por»s, co±t ¼em lighTly wiTh ±nTi-seize
compoUnd, NSN 8½3½¾½½¾597¿5367. ²hen torqUe ¼em to 4½¾6½ lb¿in.
36
MAY 88
Some Àhings yoU'd r±¶er FrgetÁ
moT³er¿In¿l±w vIsIts,
Â
dent±l ±ppointÃ
menTs, income t±xÄto n±me ± Åw.
But some Huey mechs Frget imporÃ
T±nT ÆIngsÄlike closing À³e petcock to
The engine oil cooler ±fter t³ey've
dr±ined ¶e oil Fr ± 9½½¾³oUr c³±nge.
ÇIl byp±sses t³e oil coolerUntil t³e oil
geTs ³oT, so t³e oversIG³t won't s³ow Up
¼til yoU do ± rÈnUp, ±Éd Æen Êt's too l±te.
YoU've got ± big mess to cle±n Up ±nd ±n
empty oIl sUmp to reËÌll.
And, if someone were to ºly Æe bIrd
wiT³ The petcock open, yoUr problems
will get ± whole lot worse.
So be sUre to close ¶e v±lve when
yoU¸re t³roUg³ dr±InIng t³e old oIl.
After yoU dr±Ín t³e l±st drop, close the
v±lve.
mAY 88
37
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