ASN Wikibase Occurrence # 358644
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| Date: | Sunday 16 July 1995 |
| Time: | 08:14 LT |
| Type: |  Cessna 206 |
| Owner/operator: | Private |
| Registration: | N29000 |
| MSN: | 206-1000 |
| Total airframe hrs: | 5507 hours |
| Engine model: | CONTINENTAL IO-520-CDF |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Williston, ND -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | (KISN) |
| (KYQL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he noticed an engine vibration about 10 minutes after takeoff, and returned to Williston to make a precautionary landing. While approaching the downwind leg for runway 29 the engine seized. He was unable to make a runway landing so he attempted to land on the airport property. He saw hay bales and equipment where he intended to land, and manuevered to avoid the bales. The airplane stalled in a near level attitude, impacting the runway berm. Examination of the engine revealed that the fuel system was running rich at low power settings, but lean at high power settings. The fuel pump was delivering 22 psi of fuel pressure instead of the 34 psi specified. The examination of the number four piston revealed that it was severely eroded around the perimeter of the piston, typical of combustion chamber detonation.
Probable Cause: engine failure due to low fuel pressure at high power settings and subsequent detonation. A factor was an evasive maneuver to avoid obstacles which precipitated a stall. Additional factors include the hay bales, farm equipment, and the runway berm.
Accident investigation:
 |
|
Sources:
NTSB CHI95LA225
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 16:40 | ASN Update Bot | Added |
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