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| Date: | Friday 7 September 2001 |
| Time: | 10:45 LT |
| Type: |  de Havilland Canada DHC-3 Otter |
| Owner/operator: | Private |
| Registration: | N254AW |
| MSN: | 254 |
| Year of manufacture: | 1957 |
| Total airframe hrs: | 8838 hours |
| Engine model: | P&W R1340-59 |
| Fatalities: | Fatalities: 0 / Occupants: 9 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Cordova, Alaska -
 United States of America
|
| Phase: | Unknown |
| Nature: | Executive |
| Departure airport: | Cordova , AK (CVD) |
| Cordova , AK (CVD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The certificated commerical pilot with eight passengers aboard, was in cruise flight when he heard a loud bang as the engine began to run rough and lose power. As the pilot was performing engine emergency procedures, he smelled smoke in the cabin, and noted that the oil pressure was rapidly decreasing. During the subsequent forced landing in a marshy, muskeg-covered area, the airplane nosed over, and sustained substantial damage to right wing strut, engine firewall, and empennage. When the engine was disassembled, the exhaust valve within the number one cylinder was found fractured.
Probable Cause: The loss of engine power during cruise due to the fracture of an engine cylinder exhaust valve.
Accident investigation:
 |
|
Sources:
NTSB ANC01LA138
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 18:40 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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