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Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary 12.1
12.1
NNC.12 Non-Normal Checklists-Fuel
Condition: Total fuel quantity is less than selected TO REMAIN
quantity and a nozzle valve is open.
FUEL JETTISON NOZZLE switches (Both). . . . . . . . . . . .OFF
[Closes fuel jettison nozzle valves.]
FUEL JETTISON ARM switch . . . . . . . . . . . . . . . . . . . . . . .OFF
[Disarms fuel jettison system and removes FUEL TO REMAIN quantity
from EICAS.]
[]FUEL AUTO JETTISON
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary
12.2
12.2
Condition: Fuel balance system is inoperative.
FUEL BALANCE switch. . . . . . . . . . . . . . . . . . . . . . . . . . PUSH
[Deactivates fuel balance command and removes message.]
CROSSFEED switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Allows fuel from the high tank to feed both engines.]
If left main tank quantity low:
Left forward and AFT FUEL PUMP
switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Allows fuel from the high tank to feed both engines.]
Do not accomplish the following checklists:
FUEL PUMP L AFT
FUEL PUMP L FWD
If right main tank quantity low:
Right forward and AFT FUEL PUMP
switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Allows fuel from the high tank to feed both engines.]
Do not accomplish the following checklists:
FUEL PUMP R AFT
FUEL PUMP R FWD
When fuel balancing complete:
Forward and AFT FUEL PUMP switches
(All). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Restores fuel feed from low tank.]
CROSSFEED switch. . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Restores main tank–to–engine fuel feed.]
[]FUEL BALANCE SYS
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary 12.3
12.3
Condition: Crossfeed valve is not in the commanded position.
If crossfeed switch ON:
CROSSFEED switch. . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Takes away command for crossfeed valve to open, which would cause
unwanted crossfeed if it opened later in flight.]
Do not complete the following checklist:
FUEL BALANCE SYS
[]FUEL CROSSFEED
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary
12.4
12.4
Condition: Totalizer fuel quantity and FMC calculated fuel
quantity disagree.
The FUEL DISAGREE message may be caused by an engine
fuel leak. For indications of an engine fuel leak, check:
• total fuel remaining on EICAS compared to planned fuel
remaining
• fuel flow indications, for an engine with excessive fuel
flow
• individual tank quantities
• totalizer compared to calculated quantities (PROGRESS
page 2). The TOTALIZER value is the sum of the individual
tank quantities. The CALCULATED value is the totalizer
value at engine start minus fuel used (calculated using
fuel flow rates and time).
If there is an indication of an engine fuel leak:
Accomplish the FUEL LEAK checklist.
If FUEL DISAGREE message is displayed without any
indication of an engine fuel leak:
PROGRESS page 2. . . . . . . . . . . . . . . . . . . . . . . . . . . Select
TOTALIZER or CALCULATED. . . . . . . . . . . . . . .Select use
Select the most accurate value.
[]FUEL DISAGREE
December 15, 2006
787 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D615Z003 Boeing Proprietary 12.5
12.5
Condition: Fuel imbalance between the main tanks is excessive.
The FUEL IMBALANCE message may be caused by an
engine fuel leak. For indications of an engine fuel leak,
check:
• total fuel remaining on EICAS compared to planned fuel
remaining
• fuel flow indications, for an engine with excessive fuel
flow
• individual tank quantities
• totalizer compared to calculated quantities (PROGRESS
page 2). The TOTALIZER value is the sum of the individual
tank quantities. The CALCULATED value is the totalizer
value at engine start minus fuel used (calculated using
fuel flow rates and time).
If there is an indication of an engine fuel leak:
Accomplish the FUEL LEAK checklist.
If FUEL IMBALANCE message displayed without any
　
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