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EXTRA fuel value.
When the BLOCK fuel has been entered :
CHECK/ MODIFY the FINAL/TIME [ 5L ] values.
If the crew modifies the FINAL or TIME values, the EXTRA fuel value will be modified
accordingly.
CHECK/ MODIFY the MIN DEST FOB [ 5R ], if necessary.
The MIN DEST FOB value is defaulted to ALTN + FINAL. If necessary, modify the MIN
DEST FOB value to specify a required minimum FOB at destination.
Note: 1. The ALTN value computed by the FMS may differ from the value retained on
the operational flight plan, since some computation hypothesis (such as, for
example, the route, wind profile, CRZ FL , CI) may differ.
2. Modifying the MIN DEST FOB value will not update the EXTRA fuel value
accordingly : The EXTRA fuel calculation is independent from the MIN DEST
FOB value.
PRINT the PREFLIGHT REPORT, if necessary
When the final load sheet values (ZFW/ZFWCG/BLOCK) have been entered, and the FUEL
PLANNING is completed, the crew may print the pre-flight report, which provides a copy of
the F-PLN with the associated FMS predictions.
Applicable to:
WEIGHT/CG INSERTION AND FUEL PLANNING
The flight crew must enter the Zero Fuel Weight (ZFW) and Zero Fuel Weight Center of Gravity
(ZFWCG) values on the INIT B page, to allow the FMS to perform the fuel planning computations.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-10 P 44/58
FCOM 19 AUG 10
PROCEDURE
PRESS the INIT key, and the Next (“->”) key to access the INIT B page.
ENTER the ZFWCG and ZFW value in the [ 1R ] field.
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Note: As long as the final load sheet is not available, the crew should insert the estimated
ZFWCG/ZFW in order to get fuel estimates. The ZFWCG and ZFW values must be
updated with the final load sheet values.
CHECK/MODIFY the TAXI [ 1L ] and RTE RSV [ 3L ] values.
The TAXI and RTE RSV fields display the default values specified in the AMI file (for example,
“0.4 t” for TAXI, and “5.0 %” for RTE RSV ). The flight crew may modify these values.
CHECK/MODIFY the TRIP WIND value in the [ 6R ] field.
If no wind profile has been entered in the F-PLN, the crew may enter an average TRIP WIND in
this field, to have more realistic fuel/time predictions.
Note: 1. If the crew has already defined a wind profile, even partially (such as climb wind), it
is not possible to enter a TRIP WIND.
2. If the crew enters a TRIP WIND, and subsequently enters a wind profile on the
WIND pages, the TRIP WIND will be erased, and the FMS will use the wind profile
defined on the WIND pages for predictions computations.
PRESS the FUEL PLANNING prompt [ 3R ].
The FMS computes the required BLOCK fuel in order to have EXTRA fuel = 0, based on the
parameters entered on the INIT andF-PLN pages. The computed BLOCK fuel value is displayed
in the [ 2R ] field, and a BLOCK CONFIRM prompt appears in the [ 3R ] field.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-10 P 45/58
FCOM 19 AUG 10
Note: In order to obtain a realistic BLOCK fuel computation, the flight crew should ensure
that the F-PLN initialization has been completed (including ALTN if necessary), and
that flight parameters, such as CRZ FL, steps climbs (if any), and winds, have been
inserted, before using the FUEL PLANNING function.
The flight crew must check the FMS-computed BLOCK fuel value against the actual block fuel
required for the flight. Fuel planning must not be based only on FMS predictions.
If the computed BLOCK fuel corresponds to the actual block fuel required for the
flight :
PRESS the BLOCK CONFIRM prompt [ 3R ].
The FMS computes all the predictions, based on the computed BLOCK fuel.
If the computed BLOCK fuel does NOT correspond to the actual block fuel required
for the flight :
ENTER the desired BLOCK fuel in the [ 2R ] field.
The FMS computes the predictions, based on the entered BLOCK fuel, and estimates the
EXTRA fuel value.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-10 P 46/58
FCOM 19 AUG 10
When the BLOCK fuel has been entered :
CHECK/ MODIFY the FINAL/TIME [ 5L ] values.
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 12(60)
