ASN Wikibase Occurrence # 354430
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| Date: | Saturday 23 May 1998 |
| Time: | 10:00 LT |
| Type: |  Piper PA-18 |
| Owner/operator: | Private |
| Registration: | N8578D |
| MSN: | 18-6236 |
| Year of manufacture: | 1958 |
| Total airframe hrs: | 3950 hours |
| Engine model: | Lycoming O-320-A2B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Glennallen, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | , AK |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The certificated commercial pilot was conducting an aerial moose survey for the State of Alaska. The passenger was a wildlife biologist employed by the State of Alaska. The pilot said that while in cruise flight, about 500 feet above the ground, all engine power was lost. Attempts to restore engine power were unsuccessful, and he turned the airplane to avoid rising terrain. During the subsequent forced landing, the airplane collided with trees. The airplane received substantial damage to the wings and fuselage. A Federal Aviation Administration (FAA) airworthiness inspector, inspected the airplane wreckage, and obtained a fluid sample from the fuel system gascolator. The sample exhibited two obvious layers of separated liquid. The top layer consisted of a bluish liquid, consistent with the color of 100LL aviation fuel. The lower layer consisted of a clear liquid which appeared to be water. The NTSB investigator-in-charge tested the clear fluid with water finding paste. The sample tested positive for water.
Probable Cause: The pilot's inadequate preflight of the airplane's fuel system, and presence of water in the fuel system.
Accident investigation:
 |
|
Sources:
NTSB ANC98LA054
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Mar-2024 14:20 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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