ASN Wikibase Occurrence # 385596
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| Date: | Wednesday 18 July 2001 |
| Time: | 14:30 LT |
| Type: |  de Havilland Canada DHC-2 Beaver |
| Owner/operator: | State Of Alaska Dept. Of Natural Resources |
| Registration: | N9262Z |
| MSN: | 1266 |
| Year of manufacture: | 1958 |
| Total airframe hrs: | 9549 hours |
| Engine model: | P&W R-985-14B |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Willow, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Lake Hood Strip, AK (Z41) |
| Lake Hood Strip, AK (Z41) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The certificated airline transport pilot, with two passengers aboard, was conducting an aerial timber survey. While in cruise flight about 1,000 feet above the ground, the engine began to backfire, run rough, and lose power. The engine then quit, and the pilot selected a gravel bar along a glacial fed river as an emergency landing area. During the emergency approach to landing, the airplane landed short of the intended landing site, touched down in about 3 feet of water, and nosed over. After recovery, an FAA airworthiness inspector examined the airplane. The inspector reported that the number seven cylinder was cracked, the number nine cylinder had no compression, and that about one cup of clear water was found within the carburetor float bowl. The inspector said that he was unable to determine if the cylinder damage, or the presence of water in the carburetor was a result of impact damage with the river water. When the engine was disassembled the number nine cylinder head was found separated from the cylinder barrel.
Probable Cause: The loss of engine power during cruise due to the separation of an engine cylinder.
Accident investigation:
 |
|
Sources:
NTSB ANC01TA087
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 05:52 | ASN Update Bot | Added |
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