737 Flight Crew Operations Manual
6.9
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D6-27370-4Q8-SJA
6.9
A single BUS OFF light stays illuminated
6 Choose one:
7 BUS TRANSFER switch . . . . . . . . . . . . . . . AUTO
This restores power to the remaining transfer
bus if one BUS OFF light stays illuminated.
8 ELEC HYD PUMP switches
(both) . . . . . . . . . . . . . . . . . . ON, one at a time
▼
Continued on next page
▼
▼LOSS OF BOTH ENGINE DRIVEN GENERATORS continued▼
APU is available for start:
Note: APU start attempts are not
recommended above 25,000 feet.
APU . . . . . . . . . . . . . . . . . . . . . . START
When APU is running:
APU GEN switch
(affected side) . . . . . . . . . . . . . ON
►►Go to step 7
APU is not available:
BUS TRANSFER switch . . . . . . . . . . AUTO
This restores power to the remaining
transfer bus.
ELEC HYD PUMP
switches (both) . . . . . .ON (one at a time)
Plan to land at the nearest suitable airport.
Only one main AC power source remains.
►►Go to step 22
December 15, 2017
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