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each time self-comparisons between the FM1 and FM2 reveal discrepancies.
If three successive resynchronizations fail, independent mode commences.
Applicable to:
FMGC STATUS DURING A RESET/RESYNCHRONIZATION
While a RESET/RESYNCH occurs:
‐ The ND shows “MAP NOT AVAIL”.
‐ The MCDU reverts to the A/C STATUS page, with “PLEASE WAIT” displayed in the scratchpad.
‐ Autotuning of Navaids (VOR, DME, ADF) are lost on the failed side.
‐ AP and managed modes may be transiently lost (reversion to HDG/V/S or TRK/FPA).
‐ If the pilot presses a key while the scratchpad is showing “PLEASE WAIT”, there is no change
at MCDU level. This is normal, and the crew should no respond by pulling the MCDU circuit
breaker.
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 3/28
FCOM 19 AUG 10
Applicable to:
,
,
MSN,,
4538,,
FMGC STATUS DURING A RESET/RESYNCHRONIZATION
While a RESET/RESYNCH occurs:
‐ The ND shows “MAP NOT AVAIL”.
‐ The MCDU may revert to the MCDU MENU page.
‐ Autotuning of Navaids (VOR, DME, ADF) are lost on the failed side.
‐ AP/FD/ATHR modes may be transiently lost.
‐ A reversion to basic modes (HDG/V/S or TRK/FPA) occurs if the FM1 (FM2) resets while AP1
(AP2) is engaged.
Applicable to:
SINGLE RESET OR DUAL RESET WITH AUTORECOVERY
If the RESET/RESYNCH succeeds, all functions are recovered.
Note: When an FMGC is recovered, its FD (if previously engaged), is also recovered and its
status is displayed on the FMA.
PROCEDURE
RESELECT the convenient MCDU page.
REENGAGE managed modes and the AP.
WAIT 1 min after the “PLEASE-WAIT” message has disappeared, before engaging the AP/FD
of the failed FMGC.
If “MAP NOT AVAIL” remains displayed, along with “SET OFFSIDE RNG/MODE” on one ND,
temporarily SELECT a different mode on the corresponding EIS control panel.
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 4/28
FCOM 19 AUG 10
Applicable to:
SINGLE RESET OR DUAL RESET WITH AUTORECOVERY
If the RESET/RESYNCH succeeds, all functions are recovered.
Note: When an FMGC is recovered, its FD (if previously engaged), is also recovered and its
status is displayed on the FMA.
PROCEDURE
RESELECT the convenient MCDU page.
REENGAGE managed modes and the AP.
WAIT 1 min after the “PLEASE-WAIT” message has disappeared, before engaging the AP/FD
of the failed FMGC.
If both “MAP NOT AVAIL” and “SET OFFSIDE RNG/MODE” remain displayed on one ND, or if
“OFFSIDE FM CONTROL” remains displayed, temporarily SELECT a different mode or range
on the corresponding EIS control panel.
Applicable to:
,
,
MSN,,
4538,,
SINGLE RESET OR DUAL RESET WITH AUTORECOVERY
If the RESET/RESYNCH succeeds, all functions are recovered.
Note: When an FMGC is recovered, its FD (if previously engaged), is also recovered and its
status is displayed on the FMA.
PROCEDURE
RESELECT the convenient MCDU page.
REENGAGE managed modes, and the AP and A/THR, if necessary.
If both “MAP NOT AVAIL” and “SET OFFSIDE RNG/MODE” remain displayed on one ND, or if
“OFFSIDE FM CONTROL” remains displayed, temporarily SELECT a different mode or range
on the corresponding EIS control panel.
Applicable to:
SINGLE LATCH
If five successive resets occur, the failing FMGC will latch, and single mode operation
commences.
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 5/28
FCOM 19 AUG 10
While failed, the following occurs:
The failed ND side displays “MAP NOT AVAIL” and “SELECT ‐ OFFSIDE RNG/MODE” (if the
NDs are not both in the same mode or range).
‐ The MCDU reverts to the MENU PAGE and shows an “FMGC TIME OUT” prompt.
‐ If the AP and FD were previously engaged on the failed side, the AP and FD disengage and
the right-hand column of the FMA shows that the operating FD is offside. The ECAM displays
the “AP OFF” warning, and the master warning light and audio remind the pilot of the AP
disengagement.
‐ All functions are restored on the operative side.
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(57)
