Boeing 737 - IRS DC FAIL

737 Flight Crew Operations Manual
11.8
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-4Q8-SJA
11.8
DC FAIL
1 Choose one:
DC
FAIL
IRS DC FAIL
Condition:
IRS backup DC power is failed.
One IRS DC FAIL light is illuminated and all other
IRS lights are extinguished:
Continue normal operation. The IRS is
operating normally on AC power.
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Both IRS DC FAIL lights are illuminated:
The IRS is operating normally on AC power.
The battery is nearly discharged, or the
switched hot battery bus and the hot
battery bus are not powered. The following
systems may be inoperative:
Engine and APU fire extinguishing
APU start
Thrust reverser
Ground power connector.
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March 18, 2016