PS Magazine - TB 43-PS-474
PS, The Preventative Maintenance Monthly
ISSUE 474
MAY 1992
UH-1 Avionic .±.
m &lLIO ±i®²³
'l
he
4
screws holding the
#
1
F
antenna to the cover of the coupler on
youR Huey taIl F±n can work loose anD
²aLL out or break.
W³thout the screws, the antenna F´³es
oFµ anD ±nto the ta³L rotor¶ At The veRy
least you'
II
have a damaged rotor· At
the worst¸ weL¹ º·»¼
½¾e
screws
come
Loose
Because
noThIng locks Them in pLace¿
SoÀ take oFÁ t¾e Coupler coVer and
Âheck the screwsà ĵ TheYÅre loose, lock
Æem Çn place with seaL³Ng compounDÈ
ÉSÊ 803Ë-ËËÌ935Í71ËË¿ ÎepÏace anÐ
mIssInG
sÑrewÒ
ÓSÊ
53Ë5ÔËËÕÖ2×Õ
Ø83ÙÚ
½he worD on the Ûoose screws Is In
AviatIon SafeÜ Act³on Message, UHÝ
1ÕÞ1ÕASAMÕ1ßà Even áo you checked
T¾e scRews when The message came outâ
nowÆs a good t³me to Recheck ãem.
äooD
aDvice
Is that at the next
scheduLed servIce, remove the scRews,
apply a LighT coat±ng oµ sealantÒ then
Put Them Back inå Make a note to use
sealæng
compound
every
tIme
you
tighten or Replace an antenna screw.
MaY92
²1
.±²-
-±²³
\
'
I •
±.(²³´
µ¶·
.
³´
,
•
,
•µ
«h
.
³´
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