Boeing 737 - STANDBY POWER OFF

737 Operations Manual
Non-Normal Checklists -
Electrical
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE NNC.6.5
Continued from previous page
If either or both BUS OFF lights extinguish: (continued)
If both primary attitude displays are inoperative:
IRS MODE SELECTOR SWITCHES . . . . . . . . . . . . . . ATT
Maintain straight and level, constant airspeed flight
until attitude displays recover (approximately 30
seconds).
MAGNETIC HEADING . . . . . . . . . . . . . . . . . . . . . . ENTER
[Heading may be entered on the POS INIT page or on the overhead
IRS display unit by selecting HDG/STS.]
If both BUS OFF lights remain illuminated:
ALL EXTERIOR LIGHTS . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Conserves battery power.]
Avoid icing conditions.
Note: Flight in icing conditions may result in erroneous
flight instrument indications.
Plan to land at the nearest suitable airport. A fully
charged battery will provide a minimum of 30 minutes of
standby power.
STANDBY POWER OFF
Condition: The STANDBY PWR OFF light illuminated indicates
the AC standby bus is not powered.
STANDBY POWER SWITCH . . . . . . . . . . . . . . . . . . . . . . . . BAT
[A fully charged battery provides a minimum of 30 minutes of standby
power.]
If either generator bus is re-established:
STANDBY POWER SWITCH . . . . . . . . . . . . . . . . . . . . AUTO
June 07, 2002