TM 1-1520-238-23
Change 5
1-251
1.75.
APU OPERATING INSTRUCTIONS – USING EXTERNAL POWER – continued
o. Verify correct main transmission oil level on
left sight indicator (para 1.32).
p. Remove TADS window cover assembly
(TM 1-1270-476-20).
q. Remove PNVS window cover assembly
(TM 1-5855-265-20).
CAUTION
A qualified person shall be in pilot station
to monitor instruments and fire warning
system.
r. Enter pilot station (para 1.56). Observe all
safety precautions.
s. On pilot center circuit breaker panel, close
FUEL BST, APU HOLD, LT CAUT, FIRE DETR
ENG 1, FIRE DETR ENG 2, FIRE DETR APU,
FIRE EXTGH PLT, FIRE EXTGH CPG, and FIRE
EXTGH APU circuit breakers.
CAUTION
Ensure CPG and pilot engine fire pull
handles and pilot APU fire handle is
pushed in. Failure to do so could result in
accidental fire bottle discharge.
t. Set BATT/EXT PWR switch (9) on ELEC PWR
control panel (10) to EXT PWR.
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M04-1868-7A
PILOT STATION
M04-1868-8A
M04-1868-9A
9
10
