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[ 5R ] MIN DEST FOB
(green)
Displays the minimum fuel at destination. It enables the crew to specify
a minimum FOB value required at destination. By default, it is equal to
the FINAL + ALTN fuel. This field cannot be modified.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 17/126
FCOM 19 AUG 10
[ 6R ] TRIP WIND (blue) This field allows the entry of a mean wind component for the trip from
the primary origin to the primary destination. Upon entry of a CO RTE
or FROM/TO pair, this field defaults to HD000 in small font.
An entry preceeded by -, H, HD is considered to be headwind, +, T, TL
to be a tailwind. The entered velocity is displayed in large blue font.
When the flight crew inserts a wind on the CLIMB, CRUISE or
DESCENT WIND page, the system no longer considers the trip wind.
FUEL PREDICTION PAGE
Applicable to:
,
,
MSN,,
4538,,
The FUEL PRED page displays fuel prediction information at destination and alternate, as well as
fuel management data after the engines are started. The flight crew accesses the FUEL PRED page,
by pressing the FUEL PRED key on the MCDU.
[ 1L ] – [1R ]
AT-UTC-TIME/EFOB (green)
Display time and fuel predictions to the primary destination. TIME is
displayed before takeoff. UTC predictions are displayed after takeoff. If
the flight crew has entered an Estimated Takeoff Time (ETT), the UTC
is displayed.
The EFOB at destination will turn to amber, if it becomes less than the
MIN DEST FOB value.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 18/126
FCOM 19 AUG 10
[ 2L ] – [2R ]
AT-UTC-TIME/EFOB
These lines display time and fuel predictions to the alternate airport.
(Refer to DSC-22_20-30-10-18-E ALTERNATE FUNCTION -
GENERAL).
[ 3L ] GW/CG (blue) The FMS continuously updates Gross Weight (GW) and Center of
Gravity (CG) during the flight. If, at engine start, no ZFW or ZFWCG
have been entered, amber boxes are displayed in the corresponding
field. The flight crew must enter the ZFW/ZFWCG values (as
appropriate) to obtain a speed profile and predictions. The field displays
dashes, as long as the system is not calculating the Fuel On Board.
The pilot can modify both the GW and the CG values.
[ 4L ] RTE RSV/% (blue) Before departure, this field displays the route reserve fuel and the
corresponding percentage of trip fuel. After takeoff, it displays the
percentage of the remaining trip fuel from the present position to the
destination. The field may be blank, depending on the fuel policy of
the airline. The flight crew can enter either a RTE RSV or a RTE RSV
percentage. The system automatically computes the other value.
[ 5L ] FINAL/TIME (blue) Displays the hold fuel and time, associated with continued flight to the
alternate airport (or destination airport, if selected in the “airline fuel
policy” section of the database).
The flight crew may enter a final fuel or time, and the system will
compute associated holding time/fuel available.
The system assumes that the holding will be in a racetrack pattern,
1 500 ft above the alternate airport, for 30 min, with the aircraft in
CONF1 at maximum endurance speed (racetrack pattern, altitude and
selected airport can be modified through the “airline fuel policy” section
of the database).
[ 6L ] EXTRA/TIME (green) Displays the amount of extra fuel, and the resulting time available for
holding over the primary destination.
EXTRA FUEL = BLOCK - (TAXI + TRIP + RSV + ALTN + FINAL).
This field displays its information in small green font, and it cannot be
modified by the flight crew.
[ 3R ] FOB (green) Displays the Fuel On Board (FOB) calculated by the FMGS, as well as
the sensors used to calculate the FOB, that can be :
Fuel flow and fuel ‐ quantity sensosr (/FF + FQ),
‐ Fuel flow sensors only (/FF),
‐ Fuel quantity sensors only (/FQ).
The flight crew can modify the FOB value in flight, or modify the
sensors used by entering “/FF”, “/FQ” or “/FF+FQ”, as required..
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 19/126
FCOM 19 AUG 10
[ 4R ] ZFW/ZFWCG (blue) Displays the Zero Fuel Weight (ZFW) and Zero Fuel Weight Center of
　
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