ASN Wikibase Occurrence # 295288
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| Date: | Wednesday 3 September 2003 |
| Time: | 08:00 LT |
| Type: |  Piper PA-28-140 |
| Owner/operator: | Private |
| Registration: | N15367 |
| MSN: | 28-7325048 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 3537 hours |
| Engine model: | Lycoming O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Homedale, Idaho -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Ontario Airport, OR (ONO/KONO) |
| Homedale (S66) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that the airplane's engine developed an uncharacteristic vibration while in a cruise flight configuration. The pilot stated that he diverted to a nearby airport and shortly after entering a downwind for the intended runway, the engine "quit." The pilot stated he turned directly toward runway 31 after the engine failure. Shortly after completing the turn to final, the pilot landed on the intended runway. The pilot reported that the airplane "...hit very hard." It was later discovered that the pilot's seat collapsed as a result of the hard landing. Examination of the aircraft's engine revealed a fracture in the number four cylinder head. The full thickness fracture emanated from the top sparkplug hole and traveled the circumference of the cylinder, terminating at the bottom sparkplug hole. The metallurgical examination of the cylinder revealed that the cylinder head fractured due to fatigue. The exam report indicated that multiple fatigue failure initiation sites were observed, most notably a series of cracks that initiated at each of the two sparkplug holes. Maintenance records indicated that the failed cylinder was repaired due to valve pitting. Following the repairs, the cylinder was returned to service. At the time of the repairs, the engines total time was 6,689 hours; 726 hours since major overhaul. The cylinder total time since manufacture could not be determined. At the time of the accident, the engine total time was approximately 7,260 hours; 1,319 hours since major overhaul.
Probable Cause: Loss of engine power during descent due to a failed cylinder head.
Accident investigation:
 |
|
Sources:
NTSB SEA03LA183
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 06:41 | ASN Update Bot | Added |
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