ASN Wikibase Occurrence # 353517
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| Date: | Thursday 3 December 1998 |
| Time: | 16:30 LT |
| Type: |  Cessna 150 |
| Owner/operator: | Private |
| Registration: | N18022 |
| MSN: | 15073738 |
| Total airframe hrs: | 5368 hours |
| Engine model: | Continental O-200A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Columbia, NC -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Manteo, NC (KMQI) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Approximately one hour into the flight, the flight instructor reported that the engine developed a rough condition and a reduction in power. Since normal flight could not be maintained, the flight instructor selected a field that he believed would be suitable for a forced landing. During the landing roll, the flight instructor attempted to avoid a collision with a drainage ditch and trees. After the airplane went through several gyrations, it rested180 degrees from the initial landing direction. Examination of the engine disclosed that the #2 exhaust valve had failed, and pieces if the valve head were lodged in the cylinder and the exhaust system. The examination of the valve revealed that the valve head separated at the valve stem attach point. The valve stem remained in a normally installed position, and functioned normally when the engine drive train was rotated. A review of the engine maintenance logs disclosed that this engine had a previous exhaust valve failure 931 hours ago. The exhaust valve Part Number was SA-646612.
Probable Cause: The failure of the #2 exhaust valve that resulted in the total loss of engine power. A factor is the lack of suitable emergency landing terrain.
Accident investigation:
 |
|
Sources:
NTSB ATL99LA027
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Mar-2024 07:42 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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