ASN Wikibase Occurrence # 359810
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| Date: | Saturday 10 September 1994 |
| Time: | 14:00 LT |
| Type: |  Piper PA-24-250 |
| Owner/operator: | O & N Aircraft Modifications |
| Registration: | N55GV |
| MSN: | 24-401 |
| Total airframe hrs: | 3218 hours |
| Engine model: | LYCOMING O-540-A1A5 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | North Anson, ME -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Oxford, ME (81B) |
| Greenville, ME (3B1) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT AND PASSENGER WERE ON THE SECOND LEG OF A CROSS COUNTRY FLIGHT. THIRTY MINUTES INTO THE FLIGHT A VIBRATION BEGAN, FOLLOWED BY OIL SEEPING FROM THE ENGINE COWLING. A FEW SECONDS LATER THE ENGINE FAILED AND OIL COVERED THE AIRPLANE WINDSHIELD. THE PILOT PERFORMED A FORCED LANDING TO AN OPEN FIELD WITH NO FORWARD VISIBILITY DUE TO THE OIL. THE PILOT WAS UNABLE TO STOP THE AIRPLANE BEFORE IT STRUCK TREES AT THE END OF THE FIELD. EXAMINATION REVEALED THAT THE NUMBER TWO CYLINDER HAD SEPARATED FROM THE ENGINE. SEVEN OF THE EIGHT CYLINDER STUDS HAD SHEARED. THE STUD NOT SHEARED WAS INTACT AND UNDAMAGED. AN UPPER STUD WAS RUSTED PARTIALLY ACROSS, WITH THE REMAINDER OF THE STUD SHEARED CLEANLY. THE ENGINE HAD BEEN OVERHAULED 362 TACH HOURS BEFORE THE FAILURE BY A LOCAL ENGINE OVERHAUL FACILITY.
Probable Cause: the inadequately installed cylinder mounting stud nuts, by the engine overhaul facility, which resulted in the separation of the number two cylinder and the subsequent forced landing.
Accident investigation:
 |
|
Sources:
NTSB NYC94LA174
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 14:49 | ASN Update Bot | Added |
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