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A310 flight crew reported that autopilot and autothrottles appeared to re-engage at touchdown after being disconnected; slowing selection of reverse thrust and affecting directional control.
| Attributes | |
| ACN | 1267358 |
| Time | |
| Date | 201506 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | A310 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Autopilot and autothrottles appeared to re-engage at touchdown after being disconnected (autopilot at 500 ft and autothrottles at 200 ft). At touchdown throttles came up and first officer had [to] physically retard them. At this point throttles would not go into reverse and aircraft looked like it was going to exit the right side of runway 23. Capt stepped on the left rudder (acted as if autopilot was still engaged); [it] would not respond. Hit the disconnect switches (autopilot and autothrottles) again while engaging manual brakes pretty heavy. At this point the reversers came up; and a/c started to respond normally. Throttles were stiff; other than that I have no clue.increase maintenance budget; better test equipment and more in depth training for maintenance folks with all the electronic systems on the aircraft.prevention! Better than reaction.
Original NASA ASRS Text
Title: A310 flight crew reported that autopilot and autothrottles appeared to re-engage at touchdown after being disconnected; slowing selection of reverse thrust and affecting directional control.
Narrative: Autopilot and autothrottles appeared to re-engage at touchdown after being disconnected (autopilot at 500 FT and autothrottles at 200 FT). At touchdown throttles came up and F/O had [to] physically retard them. At this point throttles would not go into reverse and aircraft looked like it was going to exit the right side of Runway 23. Capt stepped on the left rudder (acted as if autopilot was still engaged); [it] would not respond. Hit the disconnect switches (autopilot and autothrottles) again while engaging manual brakes pretty heavy. At this point the reversers came up; and a/c started to respond normally. Throttles were stiff; other than that I have no clue.Increase maintenance budget; better test equipment and more in depth training for maintenance folks with all the electronic systems on the aircraft.Prevention! Better than reaction.
Data retrieved from NASA's ASRS site 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.