FMS DEGRADED OPERATION
FMGC RESETS or FAILURES
9
2.3. Automatic Triple Reset of one FMGC
If a third reset occurs within the minute following the last one the FMS
will pass in degraded SINGLE mode.
INDICATIONS IN THE COCKPIT
On ECAM:
− Red warning AUTO FLT AP OFF and aural warning.
− Amber caution AUTO FLT A/THR OFF and aural warning.
On the affected side:
ND: RANGE CHANGE
message (green),
followed by red flag MAP
NOT AVAIL is displayed.
The SET OFFSIDE
RNG/MODE message
(amber) is displayed if
the two ND ranges or
modes selected on the
EFIS control panels are
different. Navaids auto-
tuning is lost.
AP: If engaged, the
onside AP & A/THR
disconnect. FD
disappear.
Use the other AP as
necessary.
FMA: Indicates auto-
systems degradation.
MCDU failed side:
The MCDU reverts to the
MCDU menu page with:
FMGC (OPP) prompt in [1L] field,
SELECT DESIRED SYSTEM message (white) on scratchpad.
The amber FM FAIL annunciator illuminates.
FD2
MAP NOT AVAIL
SET OFFSIDE RNG/MODE
RANGE CHANGE
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00
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