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The symptoms described do sound like an FMGC failure and automatic reset. The reset and resynchronization takes about 30 seconds and explains initial inability to reengage the autopilot.
| Attributes | |
| ACN | 886179 |
| Time | |
| Date | 201005 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | FLL.Airport |
| State Reference | FL |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Fll; 9L; outer marker 1800; stable; IMC; 150 kts. FMA displayed GS; localizer; ap 1 and 2 go around altitude set 4000'. With no pilot input auto pilot disconnected; FD pitch and roll bars commanded fly down; left; offside FM control displayed on nd. After some amazement go around / missed approach flown manually to level of altitude. During go around we tried to reengage auto pilots with no luck. After level off we attempted again. Autopilot and auto flight returned to normal. Offside FM indications remained until landing. Normal ILS landing followed I believe no parameters were exceeded although it was quite busy at the time; after block in all systems and indications returned to normal. Log book entry was made.
Original NASA ASRS Text
Title: The symptoms described do sound like an FMGC failure and automatic reset. The reset and resynchronization takes about 30 seconds and explains initial inability to reengage the autopilot.
Narrative: FLL; 9L; outer marker 1800; stable; IMC; 150 kts. FMA displayed GS; LOC; AP 1 and 2 go around altitude set 4000'. With no pilot input auto pilot disconnected; FD pitch and roll bars commanded fly down; left; offside FM control displayed on ND. AFTER SOME AMAZEMENT go around / missed approach flown manually to level of altitude. During go around we tried to reengage auto pilots with no luck. After level off we attempted again. Autopilot and auto flight returned to normal. Offside FM indications remained until landing. Normal ILS landing followed I believe no parameters were exceeded although it was quite busy at the time; after block in all systems and indications returned to normal. Log book entry was made.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.