Thales FMGS - INDEPENDENT Mode

FMS DEGRADED OPERATION
FMGC RESETS or FAILURES 23
 INDEPENDENT mode
This may occur after several attempts of resynchronization or when
data base is loaded in the FMSs.
The two FMSs are healthy but in disagreement on some criteria, or
cannot communicate and synchronize. Each FMGC operates
independently.
INDICATIONS IN THE COCKPIT
MCDUs:
− INDEPENDENT OPERATION scratchpad message (amber) is
displayed.
− The front panel annunciator IND is illuminated on the two MCDUs.
CLIMB THV001
CRZ OPT REC MAX
FL360 FL360 FL384
<REPORT
UPDATE AT
*[ ]
BRG /DIST
---° /----.- TO [ ]
PREDICTIVE
<GPS GPS PRIMARY
REQUIRED ACCUR ESTIMATED
1.0NM HIGH 0.08NM
INDEPENDENT OPERATION
FM1 IND RDY FM2 FM1 IND RDY FM2
FROM THV001 {}
UTC SPD/ALT
T-P 0523 / FL159
BRG344° 34
(T/C) 0827 .79/ FL360
TRK344° 49
FOUCO 0834 300/ "
UN874 48
ADABI 0839 " / "
UN874 30NM
BOKNO 0843 " / "
DEST UTC DIST EFOB
EGLL27R 0929 471 4.1
INDEPENDENT OPERATION$
− On POSITION MONITOR page the opposite FMGC position is not
displayed. Discrepancies between the two FMGCs position may exist.
POSITION MONITOR
FMGC1 5116.0N/00007.9E
3IRS/GPS
FMGC2 ----.--/-----.--
3IRS/GPS
GPIRS 5116.7N/00007.1E
MIX IRS 5117.6N/00007.8E
IRS1 IRS2 IRS3
NAV 0.9 NAV 1.2 NAV 1.6
SEL
<FREEZE NAVAIDS>
POSITION MONITOR
FMGC1 ----.--/-----.--
FMGC2 5116.6N/00007.0E
3IRS/GPS
GPIRS 5116.7N/00007.1E
MIX IRS 5117.6N/00007.8E
IRS1 IRS2 IRS3
NAV 0.8 NAV 1.0 NAV 1.4
SEL
<FREEZE NAVAIDS>
− On RAD NAV page navaids tuned on the opposite MCDU are not
displayed. Corresponding fields are blank.
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00