737 Flight Crew Operations Manual
Engines, APU -
General Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 7.15.7
CUTOFF –
• closes both spar and engine fuel shutoff valves
• de–energizes ignition system.
Note: Illuminate (red) in the event of engine fire or during an engine fire test.
APU
1 APU Maintenance (MAINT) Light
Illuminated (blue) – APU maintenance problem exists:
• APU may be operated
• light is disarmed when APU switch is in OFF.
2 APU Exhaust Gas Temperature (EGT) Indicator
Displays APU EGT
EGT indicator remains powered for 5 minutes after shutdown.
0
2
4
6
10
8
EGT
SPEED
OVER
PRESSURE
LOW OIL
MAINT FAULT
APU
ON
START
OFF
APU
6
FORWARD OVERHEAD PANEL
1
2
3
4
5
September 15, 2016
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