ASN Wikibase Occurrence # 285313
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| Date: | Tuesday 30 January 2007 |
| Time: | 13:50 LT |
| Type: |  Cessna 421 |
| Owner/operator: | Bully Dog Technologies |
| Registration: | N4584L |
| MSN: | 421-0184 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 4381 hours |
| Engine model: | Continental GTSIO-520-H |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Pocatello, Idaho -
 United States of America
|
| Phase: | Unknown |
| Nature: | Ferry/positioning |
| Departure airport: | Idaho Falls-Fanning Field, ID (IDA/KIDA) |
| American Falls, ID (KU01) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the climb to cruise altitude, the bolt that holds the elevator trim tab actuator rod to the trim tab horn came loose from its retaining nut and separated from the aircraft. This led to severe airframe vibration, and eventually to violent elevator flutter. As a result of the flutter, the inboard half of the right elevator separated from the airframe. By reducing power on the right engine, and adding power on the left engine, the pilot was able to crab the aircraft, reduce the airflow over the right stabilizer/elevator, and ultimately execute an emergency full-stop landing.
Probable Cause: The separation of the bolt that attaches the elevator trim tab actuator rod to the elevator trim tab horn, resulting in violent flutter of the elevator, and eventually to the separation of the inboard half of the right elevator.
Accident investigation:
 |
|
Sources:
NTSB SEA07LA055
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Oct-2022 07:56 | ASN Update Bot | Added |
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