ASN Wikibase Occurrence # 369216
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| Date: | Thursday 9 February 1989 |
| Time: | 16:25 LT |
| Type: |  Cessna 207 |
| Owner/operator: | Olson Air Service, Inc. |
| Registration: | N73771 |
| MSN: | 20700626 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 6537 hours |
| Engine model: | CONTINENTAL IO-520-F |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Nome, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Council, AK (CIL) |
| Nome, AK (OME) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE AIRPLANE TRANSPORT PILOT REPORTED THAT WHILE IN CRUISE FLIGHT HE EXPERIENCED A PARTIAL LOSS OF ENGINE POWER TWICE WITHIN A PERIOD OF ABOUT THREE MINUTES. HE WAS ABLE TO REGAIN ENGINE POWER BOTH TIMES, BUT THE SECOND TIME THE AIRPLANE IMPACTED ON A SNOW-COVERED MOUNTAIN SIDE BEFORE THE DESCENT COULD BE STOPPED. A TEAR DOWN AND ANALYSIS OF THE ENGINE FUEL PUMP REVEALED AN EIGHTH INCH LONG THREAD-LIKE METAL SLIVER LODGED UNDER THE LOW PRESSURE CHECK VALVE PLUNGER.
Probable Cause: THE PARTIAL LOSS OF POWER RESULTING FROM FUEL INTERRUPTION DUE TO A BLOCKAGE IN THE ENGINE FUEL PUMP LOW PRESSURE CHECK VALVE.
Accident investigation:
 |
|
Sources:
NTSB ANC89FA042
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 12:03 | ASN Update Bot | Added |
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