ASN Wikibase Occurrence # 362022
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| Date: | Sunday 23 May 1993 |
| Time: | 11:15 LT |
| Type: |  Cessna 185A |
| Owner/operator: | Private |
| Registration: | N4080Y |
| MSN: | 1850280 |
| Year of manufacture: | 1961 |
| Engine model: | CONTINENTAL IO-470F |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lowell, ID -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Stevensville, MT (32S |
| (32S) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE FLYING AT 8000 FEET MSL A PARTIAL POWER LOSS DEVELOPED. WHEN THE PILOT OBSERVED OIL ON THE LEFT WING STRUT HE CHOSE TO EXECUTE A PRECAUTIONARY LANDING IN A FIELD TO PREVENT ENGINE SEIZURE. DURING THE LANDING ROLL, IN SOFT TERRAIN, THE AIRCRAFT NOSED OVER. POST CRASH EXAMINATION REVEALED THE NUMBER TWO CYLINDER EXHAUST ROCKER ARM BROKEN IN HALF. METALLURGICAL EXAMINATION REVEALED THAT THE ROCKER ARM SEPARATED IN FATIGUE. THE ROCKER ARM(S), WHICH WERE NOT UNDER AN APPROVED STC, HAD BEEN INSTALLED APPROXIMATELY 11 HOURS PREVIOUS TO THE ACCIDENT.
Probable Cause: FATIGUE OF THE ROCKER ARM AND UNSUITABLE TERRAIN WHICH WAS ENCOUNTERED DURING THE PRECAUTIONARY LANDING.
Accident investigation:
 |
|
Sources:
NTSB SEA93LA120
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Mar-2024 16:56 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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