ASN Wikibase Occurrence # 292984
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| Date: | Sunday 2 October 2005 |
| Time: | 19:30 LT |
| Type: |  Cessna 185 |
| Owner/operator: | Mark Hedlund |
| Registration: | N9950X |
| MSN: | 185-0150 |
| Total airframe hrs: | 1120 hours |
| Engine model: | Continental IO-470 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Iliamna, Alaska -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Aleknagik, AK |
| Iliamna Airport, AK (ILI/PAIL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airline transport pilot was conducting a 14 CFR Part 91 personal cross-country flight, when the engine lost power about 20 miles from the final destination. The pilot said the symptoms were similar to fuel starvation, but according to his calculations he should have had 30 minutes of fuel remaining. In a written statement to the NTSB, the pilot wrote that the morning following the accident, before the airplane was recovered, he "noticed a substantial amount of frost/ice buildup around the left fuel vent, and on the ground from the fuel venting throughout the night," and "in my opinion it seemed to indicate that there was still a fair amount of water in the fuel that caused this ice buildup." He wrote, "although I felt I properly drained the tanks prior to takeoff, it seems there was still water trapped in the tanks." After recovery the airplane's engine was prepared with a new propeller and clean fuel at an aircraft maintenance facility. The engine was started, and run through a variety of power settings, without any evidence of mechanical malfunction. The pilot reported that during the forced landing, the landing gear was torn off, structurally damaging the fuselage. He also stated that prior to the accident there were no known mechanical anomalies with the airplane.
Probable Cause: The pilot's inadequate preflight inspection, which failed to detect water-contaminated fuel, resulting in a loss of engine power during cruise flight, and subsequent in-flight collision with terrain.
Accident investigation:
 |
|
Sources:
NTSB ANC06LA001
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Oct-2022 14:40 | ASN Update Bot | Added |
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