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automatically, which it does under certain specific conditions,
such as :
change of active leg ‐ due to lateral revision.
‐ termination of next leg at destination runway (must join
trajectory for final approach)
DES/ALTN MISMATCH I/W The flight crew attempts to enter an alternate CO RTE
(which starts at an origin that is not the primary flight plan
destination).
DIR TO IN PROCESS I/W The flight crew calls up the vertical or lateral revision page on
one MCDU while the direct to page is displayed on the other
MCDU.
DISCONT AHEAD II/A The aircraft is in NAV mode and is 30 s away from a lateral
discontinuity, or the flight crew makes a modification less than
30 s before the aircraft is to reach a lateral discontinuity.
ENTER DEST DATA II/A The flight crew has not entered wind, QNH, or temperature for
the destination, and the aircraft is 180 nm out.
ENTRY OUT OF RANGE I/W The flight crew attempts to enter data that is out of the range
specified for the selected field.
FLT NBR UPLINK
(ACARS msg)
II/W A flight number has been added to the uplink flight plan
without previous request.
F-PLN ELEMENT RETAINED I/W The pilot attempts to delete stored navaids, waypoints or
runways that are contained in any flight plan or that are being
tuned.
F-PLN FULL II/W There is not enough memory in the flight plan allotment for the
computer to accept more flight plan data.
FMS1/FMS2 A/C STS DIFF II/W This message always precedes a transition to independent
mode, and appears at power-up if the system detects a
difference in one of the following :
NAV ‐ Data Base Serial Number
‐ Performance Data Base
‐ FM Operational Program
‐ Aircraft and Airline Program Pins
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - MESSAGES
A318/A319/A320/A321 FLEET DSC-22_20-50-20-30 P 4/8
FCOM 19 AUG 10
Continued from previous page
MESSAGE TYPE/COLOR CONDITIONS
FMS1/FMS2 GW DIFF II/W Onside and offside aircraft weight differ by 2 t or more.
FMS1/FMS2 POS DIFF II/A Onside and offside positions differ by 5 nm (0.5 nm if GPS
installed) or more.
FMS1/FMS2 SPD TGT DIFF II/W Onside and offside target speeds differ by 5 kt or more.
FORMAT ERROR I/W A data entry does not meet the specified entry format for a
given field.
GPS PRIMARY LOST
(also displayed on ND)
II/A Displayed when GPS PRIMARY mode is lost.
GPS PRIMARY II/W Displayed when the FMS is transitioning to GPS PRIMARY.
GPS IS DESELECTED II/A This message appears when GPS has been manually
deselected and the aircraft is 80 nm before the top of descent
or in approach phase.
INDEPENDENT OPERATION II/A The FMGCs are operating independently of each other.
INITIALIZE WEIGHTS II/A The zero-fuel weight or block fuel (FOB) is undefined after
engine start.
INVALID FLT NBR UPLINK
(ACARS msg)
II/W The uplink message contains a valid flight plan but no flight
number.
INVALID PERF UPLINK
(ACARS msg)
II/W Performance uplink message has been rejected.
INVALID RTE UPLINK
(ACARS msg)
II/W An error was detected in the uplink message and it is
rejected.
INVALID TAKEOFF UPLINK
(ACARS msg)
II/W The current uplink takeoff data message is rejected.
INVALID WIND UPLINK
(ACARS msg)
II/W The current uplink wind message is rejected.
IRS ONLY NAVIGATION II/A The aircraft is not in an approach or terminal area and :
the aircraft has been in IRS mode ‐ for more than 10 min, or
‐ the aircraft is in IRS only and starts the descent phase.
LAT DISCONT AHEAD II/A The next leg is a discontinuity and the aircraft is 30 s from
flying the leg.
LIST OF 10 IN USE I/W The flight crew has tried to enter more than ten stored
runways into the data base, and all of the first ten are included
in a flight plan or a pilot-stored route.
LIST OF 20 IN USE I/W The flight crew has tried to create a PBD, LAT/LONG, or
PB-PB, or store a pilot-defined waypoint or navaid when 20
are already in use (in a flight plan or pilot-stored routes).
NAV ACCUR DOWNGRAD
(also displayed on ND)
II/A NAV accuracy has been downgraded from HIGH to LOW.
(See FMGS principles for an explanation).
NAV ACCUR UPGRAD
(*EFIS ND)
II/A NAV accuracy has been upgraded from LOW to HIGH.
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - MESSAGES
A318/A319/A320/A321 FLEET DSC-22_20-50-20-30 P 5/8
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 2(21)
