PS Magazine - TB 43-PS-437
PS, The Preventative Maintenance Monthly
ISSUE 437
APRIL 1989
Aviation Ground Power UnIt .
.±
ome units have tried to tow
AGPU with the self-propulsion trac±
tion motor clutch engaged.
Those units now Have AGPU's tHat
are no longer seLf-prope²led³
Towing like that overspeeds the trac±
tion
motor
and
destroys
the
com±
mutator´
The newesµ AGPUs (serIaL number
254
and up) have electric Brakes which
lock the wheels if you Frget to disen¶
gage the seLf·propulsion clutcH³
So until oLder units are retrofitted,
be sure to push in the clutch lever to
38
disengage the drive mechanism befOre
you tow yo¸r AGPU.
²lsO m³kE s´RE:
ThE q´µck RElE³sE
pµN µs RE-µNs¶³LLED
•
ThE ¶OW b³· ·µNg µs sE³¶ED p·Op¸
ERly µN ¶hE pµN¶lE
¹º» 89
•
ThE p³RkµN¼ b·³kE µs RElE³sED
r-
Aviation Messages
:.±_²³
H your unit has not ReEiv± a mEsSag² you havE an InTEREsT ³n,
chEck with youR nExT highEr hEAdqua´ERs.
CH-47-88±19,
µOF¶
Main! Manda·
tor,
Inspection of foRa±d t±ans-
mission impellE± aSsEmbly² 023³Z
DEC 88.
UH·1²88-07³
µOF¶
Main! Manda-
to´yµ ¶nsP of high pe±fo±mance
hoist ¸ystemµ ¹722¹¹Z DEc 88.
UH´µ14¶
µOF·
Maint Manda·
torµ ¶Nsºt»on oF high pE±Fo±mancE
hoist system¼ ¹722¹¹Z DEc 88½
CH²47-88±20,
µOF¶
¾me±gEncy¿ All
ÀHÁ47 se±iesµ Âmmediate suspen·
sioN oF all FLight ope±at»onsµ 12233¹Z
Dec 88
Ã
CH-47±88-21,
µOF¶
TEchnical² All
GHÁ4 7 sE±iEs¿ inst±uctions fo± ±EÄ
tu±ning ai±c±aft to ÅuÆl fl»ght status
²
Ç3235¹Z Dec 88
.
CH²47²¸8-22,
µOF¶
TEchnical² ÀH·
47D² lnspÈon fo± ce±Éa»n sE±»al
numbE±
t±ansmissions²
23¹43¹Z
Dec 88.
¹º» 89
Ch-4¹º23¶
µOF¸
Maint MandaÊ
to±y² ÀHË47ÌÍ ÎnspEct»on oÅ ÅoRa±d
t±ansmission
impellE±
assEmbly²
24¹¹55Z DEc 88Ï
CH-47-8»24¼
µOF¶
MainÐ MandaÑ
to±yµ ÒEvision to
µOF
ÀHÓ47Á88Ô23Õ
Ö±Epa±ation
inst±u×t»ons
fo±
the
BoEing
intE±nal
t±ansmission
in-
spEct»onµ 281625Z DEc 88.
Uh½¾MIM¿ÀÀÁ
¶nte±changeØ
abiliÙy
of
stab»lato±
amplifiE±s
µ
¹622¹¹Z Dec 88.
Uh-1-88ÂMIMÃÄ
Úight vision gogØ
gÆEs² ¹92ǹ¹Z DEc 88
.
GEN²88-MIM-Å6,
ÛEnE±al
¼
Òe-
questing sE±Üal numbE±s fo± ai±c±aft
and suppo±Ý EquipmEnt
¼
Ç2233¹Z
DEc 88
Þ
Ah-64Æ88ÇMIMÈ1ɼ
Òetu±n of dE·
fEctive axial ßiston pumps to conà
t±acto±¿ Ç92Ç3¹Z DEc 88.
39
C½¾
1
¿ÀÁ ÂHÃÄÅÆ
½ÇÈÉVÉÊ 6ËÌÍÎ066
(ÏÐ ÑÉÇÒS)
AhÊË18Ä
µOF¶
Maánt Manda-
tor² ¶nspEction of thE shaÅt d±ivE
comp±Esso±sµ Ç4223¹Z DEc
BB¹
UhÆÀÌÍÁ
µOF
Maint Mandaâ
to±y² ÎnspEcã lOäåk² submiã ÆEgiblE
±ep±oduced copy oF Each ÌA æo±m
24¹8ç16è ai´c±aft component histo±â
ical
±Eco±d¿
fo±
Each
ai±c±aft²
Ç5223¹Z Dec é8ê
UhÎÏ3Á
µOF
Mainã
MandaÄ
to±y²
lnspeëtion of nose landing
gea± to±quE t±ansfE± ìube assembly¿
Ç5232¹Z Dec 88
.
OhÐ5ÑÒÄ
ºOF»
Technical² ¶Ní
spEctîon of tail ±oto± yokE assEm-
bliEs² Ç422¹¹Z DEc 88ï
OhÓÔ8Æ88Ã,
µOF¼
ðechn»cal
²
¶nñ
spEction of òÁ63óAó7¹¹ enginE by
cont±acto± team² 16223¹Z DEc 88ô
Oh²6Ƹ8Æ09Á
µOF¶
Technicalµ
õn-
spEct»on of T Á6ö÷Aø 7¹¹ engùnE by
cont±acto± ìúam² Ç6223¹Z DEc 88.
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