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[Metric Units]
3 Choose one:
Continued on next page
FUEL AUX XFR continued
FMC TAKEOFF REF CG is less than 31%:
All center tank fuel is usable.
FMC TAKEOFF REF CG is 31%:
When center tank quantity decreases to
4,500 kgs:
Go to step 5
FMC TAKEOFF REF CG is 32%:
When center tank quantity decreases to
5,900 kgs:
Go to step 5
FMC TAKEOFF REF CG is 33%:
When center tank quantity decreases to
5,500 kgs:
Go to step 5
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC
12.6
12.6
[English Units]
4 Choose one:
5 CENTER FUEL PUMP switches (both) . . . . . . . .Off
6 PERF INIT page . . . . . . . . . . . . . . . . . . . .Select
7 FUEL . . . . . . . Enter usable fuel quantity manually
Usable fuel quantity is total fuel minus unusable
fuel. Unusable fuel is auxiliary tank quantity plus
remaining center tank quantity.
Continued on next page
FUEL AUX XFR continued
FMC TAKEOFF REF CG is less than 31%:
All center tank fuel is usable.
FMC TAKEOFF REF CG is 31%:
When center tank quantity decreases to
10,000 lbs:
Go to step 5
FMC TAKEOFF REF CG is 32%:
When center tank quantity decreases to
13,000 lbs:
Go to step 5
FMC TAKEOFF REF CG is 33%:
When center tank quantity decreases to
12,000 lbs:
Go to step 5
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC 12.7
12.7
8 ZFW . . . . . . . . . . . Enter adjusted ZFW manually
Adjusted ZFW is dispatch ZFW plus unusable
fuel.
1 Choose one:
FUEL AUX XFR continued
Notes:Remaining center tank fuel is unusable.
FUEL DISAGREE message is not available
when FUEL is manually entered on the PERF
INIT page.
[] FUEL CROSSFEED AFT
Condition: The fuel crossfeed valve is not in the
commanded position.
AFT FUEL CROSSFEED switch is on:
FWD FUEL CROSSFEED switch. . . . . . . On
AFT FUEL CROSSFEED switch is off:
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC
12.8
12.8
1 Choose one:
[AIMS BP2005 and after]
1 The FUEL DISAGREE message may be caused by an
engine fuel leak. For indications of an engine fuel
leak, check:
The total fuel remaining on EICAS compared to
the planned fuel remaining.
The fuel flow displays, for an engine with an
excessive fuel flow.
The individual tank quantities.
Continued on next page
[] FUEL CROSSFEED FWD
Condition: The fuel crossfeed valve is not in the
commanded position.
FWD FUEL CROSSFEED switch is on:
AFT FUEL CROSSFEED switch . . . . . . . On
FWD FUEL CROSSFEED switch is off:
[] FUEL DISAGREE
Condition: The totalizer fuel quantity and the FMC
calculated fuel quantity disagree.
Objective: To check for indications of a fuel leak and
select the most accurate fuel value.
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC 12.9
12.9
The 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).
2 Choose one:
3 Select PROGRESS page 2.
4 TOTALIZER or
CALCULATED . . . . . . . . . . . . . Select USE for the
most accurate value
FUEL DISAGREE continued
There is an indication of an engine fuel leak:
Go to the Fuel Leak checklist on
page 12.16
There is no indication of an engine fuel leak and
the FUEL DISAGREE message shows:
Go to step 3
December 10, 2007
777 Flight Crew Operations Manual
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波音777快速检查单 Quick Reference Handbook QRH(58)
