737 Operations Manual
Non-Normal Checklists -
Fuel
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE NNC.12.1
NNC.12 Non-Normal Checklists-Fuel
CROSSFEED SELECTOR INOPERATIVE
Condition: The crossfeed VALVE OPEN light remaining
illuminated bright blue indicates the crossfeed valve
position disagrees with the crossfeed selector
position.
Valve Closed:
Flight conditions permitting, vary thrust to maintain fuel
balance. If unable to maintain acceptable balance, land
as soon as possible.
Valve Open:
Maintain fuel balance with selective use of fuel pumps.
FUEL FILTER BYPASS
Condition: A fuel FILTER BYPASS light illuminated indicates
impending fuel filter bypass due to a contaminated
filter.
Note: Erratic engine operation and flameout may occur due
to fuel contamination.
December 1, 2000
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