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BE23 pilot reports sudden vibration and loss of control at 2500 feet. Control is regained but elevator trim is inoperative. A straight in no flap landing ensues on a long runway.
| Attributes | |
| ACN | 894650 |
| Time | |
| Date | 201006 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Sundowner 23 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Component | |
| Aircraft Component | Elevator Trim System |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 25 Flight Crew Total 2200 Flight Crew Type 300 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Airspace Violation All Types Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
While in cruise north northeast of prohibited airspace my beech 23 suddenly shook violently and started to climb rapidly; losing airspeed. The shaking caused my portable GPS to be thrown back and on the floor with the battery being removed. I reduced power and exerted forward pressure on the yoke while decreasing power to stabilize the aircraft. While stabilizing and getting the GPS to work once again with one hand; I planned for a possible emergency landing by staying at 1000 feet. After testing the elevator and rudder (found to be ok); I suspected a trim control problem. It is possible during this period of stabilizing the aircraft that I may have penetrated the eastern and/or northeastern portion of the prohibited area. After keeping reduced power and finding the aircraft once again controllable with heavy forward pressure on the yoke; I called on CTAF and requested pilots in the pattern to grant me 'priority' to the long runway (they acknowledged). I landed without flaps on the centerline and 'greased it in' and taxied to the ramp; my thanks to the pilots in the pattern for their help. Upon landing and post flight inspection; I found a completely severed trim actuator rod; the break being about midway between the connections.
Original NASA ASRS Text
Title: BE23 pilot reports sudden vibration and loss of control at 2500 feet. Control is regained but elevator trim is inoperative. A straight in no flap landing ensues on a long runway.
Narrative: While in cruise north northeast of prohibited airspace my Beech 23 suddenly shook violently and started to climb rapidly; losing airspeed. The shaking caused my portable GPS to be thrown back and on the floor with the battery being removed. I reduced power and exerted forward pressure on the yoke while decreasing power to stabilize the aircraft. While stabilizing and getting the GPS to work once again with one hand; I planned for a possible emergency landing by staying at 1000 feet. After testing the elevator and rudder (found to be ok); I suspected a trim control problem. It is possible during this period of stabilizing the aircraft that I may have penetrated the eastern and/or northeastern portion of the prohibited area. After keeping reduced power and finding the aircraft once again controllable with heavy forward pressure on the yoke; I called on CTAF and requested pilots in the pattern to grant me 'priority' to the long runway (they acknowledged). I landed without flaps on the centerline and 'greased it in' and taxied to the ramp; my thanks to the pilots in the pattern for their help. Upon landing and post flight inspection; I found a completely severed trim actuator rod; the break being about midway between the connections.
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.