ASN Wikibase Occurrence # 289038
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| Date: | Saturday 30 July 2011 |
| Time: | 09:00 LT |
| Type: |  Weatherly 620B |
| Owner/operator: | Air Dakota Flite |
| Registration: | N90181 |
| MSN: | 1613 |
| Total airframe hrs: | 1315 hours |
| Engine model: | Pratt & Whitney R-985-AN-14B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Hettinger, North Dakota -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Hettinger Municipal Airport, ND (KHEI) |
| Hettinger Municipal Airport, ND (KHEI) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The agricultural airplane was maneuvering at 500 feet above ground level when the engine lost power, and oil immediately covered the windscreen. During the forced landing, the airplane impacted a dirt berm and came to rest in a ditch. A postaccident examination of the engine showed a hole in the side of the No. 5 cylinder, which is located at the bottom of the engine. The examination also revealed that several of the connecting rods, including the No. 5 master rod, were broken. There was no evidence in the engine of scoring, thermal damage, or oil starvation. Due to the extent of the engine damage, the initial failure mode could not be determined. At the time of the accident, the engine had accumulated 43 hours since major overhaul.
Probable Cause: Internal failure of the engine for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB CEN11LA541
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 09:06 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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