ASN Wikibase Occurrence # 356618
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| Date: | Thursday 3 October 1996 |
| Time: | 12:15 LT |
| Type: |  Piper PA-28-140 |
| Owner/operator: | Private |
| Registration: | N5705U |
| MSN: | 28-26502 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 4369 hours |
| Engine model: | Lycoming O-320-E2A |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Plymouth, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Jackson, CA (O70) |
| Auburn, CA (KAUN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During flight, the pilot noted a severe engine vibration. He also noted a drop in engine rpm, EGT, and engine oil pressure, along with a loss of power. The engine rpm and oil pressure continued to drop, and the pilot was unable to maintain altitude. Also, the pilot noted smoke in the cockpit, which prompted him to make a forced landing. During the landing, the right wing struck a fence post. An inspection revealed that the #3 cylinder had ingested portions of the #3 exhaust valve. The exhaust valve fracture surfaces were peened.
Probable Cause: failure of the #3 exhaust valve, which resulted in loss of engine power, a forced landing, and subsequent collision with a fence post.
Accident investigation:
 |
|
Sources:
NTSB LAX97LA002
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Mar-2024 09:06 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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