Boeing 737 - APU DET INOP; APU FIRE

737 Operations Manual
Non-Normal Checklists -
Fire Protection
Copyright © The Boeing Company. See title page for details.
NNC.8.2 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 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