PS Magazine - TB 43-PS-436
PS, The Preventative Maintenance Monthly
ISSUE 436
MARCH 1989
I,
Avionics .
.±
The RT ConnectiOn
P
atience and an easy touch are two
things you must have when you replace
one of youR bird's receiver-traNsmitters.
If you're heavy handed or get in a
big hurry, you
'II
break or bend the
pins, spacers aND pLates that co±nect
the radios to your aircraFt.
That's when your avioNics repa²r³
Man gets be±´ out oµ shape, ´oo. ¶e·
solDering wires to broKe± coNnector
pi±s ²s a ted¸ous taSK, at best.
Be¹re YOu ºNstalL the ¶T, back o»
the m¼unti±g sc½ews oµ the p¾ug a
couple oF threads so that it "¿oatsÀÁ A
¿oat²Ng plug is easier to Mate with the
¶T as it is iNstalleD.
µter you set ´he ¶T oNto its mount,
ease it back un´il you Ãe¾ resistance.
Then jiggLe it a litÄLe to make sure the
guide piNs are Li±ed up witH guiDe ho¾es
²n the ¿oatiNg coN±ectorÅ The± ge±tly
ease ²t the rest oµ the way i±.
If it wonÆt go ²N easy, bacK o», a±D
stÇrt over agaiN.
42
MaR 89
•±
o
Helmet ²ikes .
..
•±
f you pilots aND cÈew chieFs who ¿y the AÉÊ64A, EÉÊ60Â, ËÉ-58Ì or ËVÍÎÏ
have trouble comMun²cati±g over your i±tercoM systeM, you may be setti±g
your intercom coNtro¾ uNit oN the wroNg ²mpedaNce.
Iµ you have an ÐPÉ-4 helMet, it should have a± Ñ-87 MicroÒhoNe. The
impedaNce oN your bird's controL set shouLd be set at 1.
But ²F you have aN ÐPÉÓ4Ô or ÕÉAÏÐÐ heLmet, it shou¾d have aN Ñ-170
microphoNe. IN that case, the impeda±ce oN your birD's cont½oL set shou¾d be
set at 2.
If you're Not sure which Micropho±e you½ heLMet Has, you ca± teLL by ²ts
shape. The ÑÓ170 is st½aight aNd Na½row, while the Ñ-87 has a bulge in the
middLe.
Öor more iN× oN the heaDset aNd MicrophoNe Kit, see TÑ Î 1Ó5965Í279-Ø3&P.
TÑ Ø1-582ØÙ320-Ø2 has More iN× oN the iNtercoM systeM.
USE pOS³ 1 fOr ´-µ7
ON
SPH4
hEL¶ET
USE pOS³ · FOr
´-170 ON
SPh4A
Or 1
hADSS
¸E¹º»T
´-170
AIr±raf ²M Numbers CHa³ge
Y
ou aircraft types have beeN bragging about being ÚuMber 1 so loNg that
´he ÂÛMy has decided to Make it o»iciaL.
Âviation TÑ's iN the 55Üseries are beiNg renuMbered in the ÝÞseries. The
First aviatioN TÑ to be reNuMbered ²s TÑ 1-1500-328Í25, Aeronautical
EquipMent Ñain´ena±ce ÑaNageMeNt Policies and Procedures. It was ßrà
mer¾y NuMbereD áÑ 55-Ø500Í328Ê25. It's scheduLeD ´o hit the âe¾d early
in 1989.
MaR 89
43
J
i
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