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[Prevents climb commands which can exceed single engine performance
capability.]
If FUEL DISAGREE message displayed:
PROGRESS page 2. . . . . . . . . . . . . . . . . . . . . . . . . Select
TOTALIZER. . . . . . . . . . . . . . . . . . . . . . . . . . . Select use
Use TOTALIZER to determine fuel remaining.
Note: After engine shutdown, all remaining fuel can be
used for the operating engine. Resume normal fuel
management procedures. Plan to balance fuel
when the FUEL IMBALANCE message is displayed.
Plan to land at the nearest suitable airport.
If landing using flaps 20:
GND PROX FLAP OVRD. . . . . . . . . . . . . . . . . . . . . OVRD
Note: Use flaps 20 and VREF20 for landing and flaps 5
for go–around.
If landing using flaps 30 (performance permitting):
Note: Use flaps 30 and VREF30 for landing and flaps 20
for go–around.
Continued on next page
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary
12.10
12.10
Continued from previous page
If FUEL QTY LOW message displayed:
CROSSFEED switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[From FUEL QTY LOW checklist. Ensures fuel is available to both
engines if the low tank empties.]
FUEL PUMP switches (All). . . . . . . . . . . . . . . . . . . . . . . .ON
[From FUEL QTY LOW checklist. Ensures all fuel is available for use.]
Plan to land at the nearest suitable airport.
[From FUEL QTY LOW checklist.]
Note: Use flaps 20 and VREF20 for landing.
[From FUEL QTY LOW checklist. Provides improved elevator authority
in event of dual engine flameout.]
GND PROX FLAP OVRD. . . . . . . . . . . . . . . . . . . . . . . OVRD
Note: Avoid high nose up attitude and excessive
acceleration or deceleration.
[From FUEL QTY LOW checklist. Prevents forward pumps from
uncovering.]
Do not complete the following checklist:
FUEL QTY LOW
Condition: Center tank is empty and one or both center fuel
pump switches are ON.
FUEL LOW CENTER
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary 12.11
12.11
Condition: Engine is on suction feed.
If unable to maintain required thrust on affected engine:
CROSSFEED switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Allows fuel from operative pump side to feed both engines.]
If airplane altitude above FL200:
Descent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Initiate
Descend to FL200.
[Ensures that suction feed will supply adequate fuel to engine.]
When airplane altitude at or below FL200:
Note: Do not climb above FL200 for the remainder of
the flight.
CROSSFEED switch . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Restores main tank–to–engine fuel feed.]
Note: Continue suction feed operation. Do not balance
fuel.
Condition: All fuel pump output pressures are low.
Condition: Center fuel pump output pressure is low.
CROSSFEED switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Prevents fuel imbalance by feeding both engines from the same center fuel
pump.]
FUEL PUMP switch (Affected pump). . . . . . . . . . . . . . . . .OFF
[]FUEL PRESS ENG L, R
FUEL PRESS ENG L+R
[]FUEL PUMP CENTER L, R
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary
12.12
12.12
Condition: Both center fuel pump output pressures are low.
CROSSFEED switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Prevents fuel imbalance.]
CENTER FUEL PUMP switches (Both). . . . . . . . . . . . . . . .OFF
Center tank fuel is available. Scavenge system will transfer
center fuel to main tanks.
Condition: Left aft or forward fuel pump output pressure is low.
FUEL PUMP switch (Affected pump). . . . . . . . . . . . . . . . .OFF
Condition: Right aft or forward fuel pump output pressure is low.
FUEL PUMP switch (Affected pump). . . . . . . . . . . . . . . . .OFF
[]FUEL PUMP CTR L+R
[]FUEL PUMP L AFT, FWD
[]FUEL PUMP R AFT, FWD
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary 12.13
12.13
Condition: Fuel quantity is low in either main tank.
The FUEL QTY LOW message may be caused by an engine
fuel leak. For indications of an engine fuel leak, check:
　
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