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OTHER ABNORMAL PROCEDURES
Applicable to:
ERRONEOUS PREDICTIONS
The FMGS may display temporary erroneous predictions that can affect such data as ECON
speed/Mach, optimum flight level, fuel or time predictions. If erroneous predictions are observed.
If erroneous predictions are observed:
ON GROUND, OR IN FLIGHT
Check the cruise temperature (sign and value), the gross weight, and the cruise flight level.
REENTER the same cost index to restart a computation (In descent or approach, a cost index
change does not restart a computation), or
MAKE a COPY ACTIVE, then activate the secondary, or
MAKE a DIR TO the “TO” waypoint.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
AUTO FLIGHT - FMGS RESET AND OTHER ABNORMAL PROCEDURES
A318/A319/A320/A321 FLEET PRO-SUP-22-10 P 17/28
FCOM 19 AUG 10
Applicable to:
,
,
MSN,,
4538,,
ERRONEOUS PREDICTIONS
The FMGS may display temporary erroneous predictions that can affect such data as ECON
speed/Mach, optimum flight level, fuel or time predictions. If erroneous predictions are observed.
If erroneous predictions are observed:
ON GROUND, OR IN FLIGHT
Check the cruise temperature (sign and value), the gross weight, and the cruise flight level.
REENTER the same cost index to restart a computation, or
MAKE a COPY ACTIVE, then activate the secondary, or
MAKE a DIR TO the “TO” waypoint.
Applicable to: ALL
SPURIOUS ENGINE OUT INDICATION
If a spurious engine-out is detected:
PROCEDURE
PRESS the EO CLR prompt of the MCDU PERF page
RE-ENGAGE previous vertical mode
RE-ENTER preselected speeds (if any). No other consequences are to be expected.
Applicable to: ALL
"FM/GPS POS DISAGREE" MESSAGE
This ECAM message is triggered when either one of the FM positions differs from either of the
GPS positions by more than 0.5 min of latitude or longitude. This may occur when an update of the
FM positions is performed automatically by the FM (Takeoff update or loc update in approach with
unprecise airfield or navaid position within the database), or manually by the pilot (manual update).
For procedure, Refer to PRO-ABN-34 NAV FM/GPS POS DISAGREE and Refer to 99 Duref Cible
QRH.
Applicable to:
"CHECK GW" MESSAGE
“CHECK GW MESSAGE” appears on the MCDU when the gross weight computed by the FM and
that computed by the FAC disagree by more than 7 t (16 055 lb ). When this message appears:
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
AUTO FLIGHT - FMGS RESET AND OTHER ABNORMAL PROCEDURES
A318/A319/A320/A321 FLEET PRO-SUP-22-10 P 18/28
FCOM 19 AUG 10
CALL UP the MCDU FUEL PRED page:
CHECK the current GW (= main engine start weight from load sheet - fuel used) and correct it
if necessary.
If the current GW on the MCDU is correct. (FM characteristics speed displayed on the
MCDU are correct):
DISREGARD the computed FAC characteristics speed (VIs, F, S, Green Dot) and Refer to
QRH/FPE-SPD Speeds.
(FM characteristics speed displayed on the MCDU are correct).
If the load sheet seems to be the cause of the discrepancy:
COMPARE FAC and QRH speeds, and select the most appropriate.
Applicable to:
,
,
MSN,,
4538,,
"CHECK WEIGHT" MESSAGE
The “CHECK WEIGHT” message appears on the MCDU when the Gross Weight (GW) computed
by the FMC and the GW computed by the FAC disagree by more than 7 t (16 055 lb). When this
message appears:
CALL UP the MCDU FUEL PRED page:
CHECK the ZFW (compare with the load sheet) and correct it, if necessary
CHECK the MCDU FOB (compare with the ECAM FOB) and correct it, if necessary.
If the current GW on the MCDU is correct (the FMC characteristic speeds displayed on
the MCDU are correct):
DISREGARD the computed FAC characteristic speeds (VIs, F, S, Green Dot) and Refer to
QRH/FPE-SPD Speeds.
(The FMC characteristic speeds displayed on the MCDU are correct).
If the load sheet seems to be the cause of the difference between the speed values
provided by the FMC and the FAC:
COMPARE FAC and QRH speeds, and select the most appropriate.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
AUTO FLIGHT - FMGS RESET AND OTHER ABNORMAL PROCEDURES
A318/A319/A320/A321 FLEET PRO-SUP-22-10 P 19/28
FCOM 19 AUG 10
Applicable to: ALL
"AUTO FLT A/THR OFF" MESSAGE
“AUTO FLT A/THR OFF MESSAGE” may be displayed on the ECAM during cockpit preparation
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(62)
