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If the crew modifies the FINAL or TIME values, the EXTRA fuel value will be modified
accordingly.
Note: 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.
PRINT the PREFLIGHT REPORT, if necessary
When the final load sheet values (ZFWCG/ZFW/BLOCK) have been entered, and the FUEL
PLANNING is completed, the flight crew may print the pre-flight report, which provides a
copy of the F-PLN with the associated FMS predictions.
Applicable to:
TAKEOFF WITH NO WEIGHT/CG ENTRY - WEIGHT/CG DATA LOST BY THE FMGC
If weight/CG data have not been entered, or if the FMGC loses the values due to a power
interruption, managed speed will only be available for the takeoff phase (provided a V2 has been
inserted).
After engine start, the MCDU displays “INITIALIZE WEIGHTS”.
If the crew does not enter weight/CG data, the following occurs :
• At takeoff, the Speed Reference System (SRS) mode is available,
• When the aircraft leaves the SRS mode, the target speed becomes the current speed and
reverts to selected.
Note: If the AP/FD has reverted to ALT or V/S (FPA) mode, the associated A/THR mode is
SPEED. In this case, the system will probably reduce thrust, because the speed will be
equal to, or greater than the target speed.
To regain a normal speed target, the flight crew must :
SELECT the appropriate speed on the FCU and PULL the speed knob
INSERT the GW/CG values on the FUEL PRED page.
Applicable to:
TAKEOFF WITH NO WEIGHT/CG ENTRY - WEIGHT/CG DATA LOST BY THE FMGS
If a GW is not entered, or if the FMGS loses the values due to a power interruption, managed
speed will only be available for the takeoff phase (provided a V2 has been inserted).
After engine start, the MCDU displays “INITIALIZE WEIGHTS”.
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 47/58
FCOM 19 AUG 10
If the crew does not respond, the following occurs :
• At takeoff, the Speed Reference System (SRS) mode remains active until the aircraft reaches
acceleration altitude (ACC ALT), or engages another vertical mode.
• When the aircraft leaves the SRS mode, the target speed becomes the current speed and is no
longer managed.
Note: If the AP/FD has reverted to ALT or V/S (FPA) mode, the associated A/THR mode is
SPEED. In this case, the system will probably reduce thrust, because the speed will be
equal to, or greater than the target speed.
To regain a normal speed target, the flight crew must :
SELECT the appropriate speed on the FCU and PULL the speed knob
INSERT the FOB, if necessary, and GW on the FUEL PRED page.
PRESS the SPD pushbutton on FCU to get managed speed target.
Applicable to:
,
,
MSN,,
4538,,
TAKEOFF WITH NO WEIGHT/CG ENTRY - WEIGHT/CG DATA LOST BY THE FMGS
If weight/CG data have not been entered, or if the FMGC loses the values due to a power
interruption, managed speed will only be available for the takeoff phase (provided a V2 has been
inserted).
After engine start, the MCDU displays “INITIALIZE WEIGHTS”.
If the crew does not enter weight/CG data, the following occurs :
• At takeoff, the Speed Reference System (SRS) mode is available,
• When the aircraft leaves the SRS mode, the target speed becomes the current speed and
reverts to selected.
Note: If the AP/FD has reverted to ALT or V/S (FPA) mode, the associated A/THR mode is
SPEED. In this case, the system will probably reduce thrust, because the speed will be
equal to, or greater than the target speed.
To regain a normal speed target, the flight crew must :
SELECT the appropriate speed on the FCU and PULL the speed knob
INSERT the ZFW/ZFWCG values on the FUEL PRED page.
Note: The crew can also insert the GW/CG values on the FUEL PRED page.
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 48/58
FCOM 19 AUG 10
Applicable to:
INSERTING WEIGHT/CG AFTER ENGINE START
The flight crew must enter the ZFWCG/ZFW values on the INIT B page prior to engine start. After
engine start, the crew can enter the GW/CG values on the FUEL PRED page.
PRESS the FUEL PRED key
INSERT the GW/CG values in the [4R] field.
This allows predictions and performance computation.
Note: Before flight crew entry, the CG is defaulted to 25 %.
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 12(61)
