ASN Wikibase Occurrence # 353958
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| Date: | Monday 10 August 1998 |
| Time: | 09:30 LT |
| Type: |  Cessna 150M |
| Owner/operator: | C.p. Aviation |
| Registration: | N704UV |
| MSN: | 15078893 |
| Total airframe hrs: | 6354 hours |
| Engine model: | Continental O-200-A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Santa Paula, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | (KSZP) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The student pilot was on a local solo flight. After practicing various maneuvers the engine began to run rough, vibrate, and smoke. The pilot made a forced landing into a riverbed and came to rest inverted. The number one cylinder was found to have a circumferential crack extending approximately 325 degrees around the barrel between the 8th and 9th cooling fins. The cylinder was further examined by a metallurgist, who reported that the barrel fins were covered with an iron oxide. The examination further revealed a fatigue crack that emanated from corrosion pits at the root radius between the 8th and 9th cooling fins. The remaining portion of the fracture exhibited an overstress separation.
Probable Cause: Failure of the number one cylinder due to a fatigue crack that had originated from corrosion pits at the cooling fin.
Accident investigation:
 |
|
Sources:
NTSB LAX98LA262
History of this aircraft
Other occurrences involving this aircraft
| 15 April 1985 | N9445U | private | 0 | Blue Hill, ME | |
w/o |
| 18 May 1985 | N704UV | Ken Pottal | 0 | Santa Rosa, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Mar-2024 17:23 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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