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A king air 200 captain reported failure of the autopilot trim on approach. Initially caught by the first officer; the captain reported the trim faulted again when reengaged; so the autopilot was disconnected and the aircraft hand flown to a landing.
| Attributes | |
| ACN | 823423 |
| Time | |
| Date | 200902 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Super King Air 200 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Other Instrument Precision |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 25 Flight Crew Total 3400 Flight Crew Type 150 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude |
Narrative:
The autopilot trim failed during the turn from base to final on the ILS at ZZZ. No master warning was received. Altitude deviation was first observed by the first officer/pilot not flying. Recovery initiated by pilot not flying and control returned to pilot flying. Autopilot was reengaged and another failure occurred. Pilot flying elected to hand fly the ILS to touchdown. ATC advised.
Original NASA ASRS Text
Title: A King Air 200 Captain reported failure of the autopilot trim on approach. Initially caught by the First Officer; the Captain reported the trim faulted again when reengaged; so the autopilot was disconnected and the aircraft hand flown to a landing.
Narrative: The autopilot trim failed during the turn from base to final on the ILS at ZZZ. No master warning was received. Altitude deviation was first observed by the First Officer/pilot not flying. Recovery initiated by pilot not flying and control returned to pilot flying. Autopilot was reengaged and another failure occurred. Pilot flying elected to hand fly the ILS to touchdown. ATC advised.
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.