737 Operations Manual
Non-Normal Checklists -
Engines, APU
Copyright © The Boeing Company. See title page for details.
NNC.7.2 D6-27370-400E-TBCE
APU DET INOP
Condition: The APU DET INOP light illuminated indicates the
APU fire detection loop has failed.
APU SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
CAUTION: Do not operate the APU. An APU fire would not
be detected and the APU would continue to run.
APU FAULT/LOW OIL PRESSURE
Condition: The APU FAULT/LOW OIL PRESSURE light
illuminated indicates an APU malfunction exists.
Note: The APU shuts down automatically.
APU SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
APU FIRE
Condition: Fire is detected in the APU.
APU FIRE WARNING SWITCH. . . . . . . . . . . . PULL & ROTATE
Rotate to the stop and hold for one second. To manually
unlock the APU fire warning switch, press the override
and pull.
APU SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
If the fire warning switch remains illuminated:
In flight:
Plan to land at the nearest suitable airport.
On the ground:
STANDBY POWER SWITCH. . . . . . . . . . . . . . . . . . . . BAT
June 08, 2001
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