ASN Wikibase Occurrence # 296957
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| Date: | Monday 15 July 2002 |
| Time: | 13:57 LT |
| Type: |  Schweizer 269C-1 |
| Owner/operator: | Helicopter Adventures, Inc. |
| Registration: | N20256 |
| MSN: | 0099 |
| Year of manufacture: | 1999 |
| Total airframe hrs: | 1609 hours |
| Engine model: | Textron Lycoming HO-360-CIA |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Concord, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Concord-Buchanan Field, CA (CCR/KCCR) |
| Concord-Buchanan Field, CA (CCR/KCCR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter sustained an in-flight fracture and separation of the center aft mast support tube. While en route to the practice area, a slight vibration was felt through the airframe. Moments later, the vibration level became severe. The certified flight instructor (CFI) entered an autorotation, and during the descent, he looked back and found the tail rotor was disabled. The autorotation was completed to a field. Post accident metallurgical examination revealed a fracture surface consistent with fatigue.
Probable Cause: The main rotor mast support tube failure as a result of fatigue.
Accident investigation:
 |
|
Sources:
NTSB LAX02LA228
History of this aircraft
Other occurrences involving this aircraft
| 17 April 1983 | N8775F | Private | 0 | Lindsay, CA | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 12:46 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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