ASN Wikibase Occurrence # 354081
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| Date: | Tuesday 21 July 1998 |
| Time: | 16:00 LT |
| Type: |  Cessna 150M |
| Owner/operator: | Langa Air Academy |
| Registration: | N9251U |
| MSN: | 15078201 |
| Total airframe hrs: | 6541 hours |
| Engine model: | Continental O-200-A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Litchfield, IL -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Peoria, IL (KPIA) |
| Alton, IL (KALN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that the engine began to vibrate and run very rough at an altitude of 4500' MSL. He noticed an immediate loss of power and was unable to maintain altitude. The pilot then cycled the magnetos, increased the mixture control to full rich, confirmed that the fuel selector was in the 'ON' position and applied carburetor heat, all of which had no effect. Being uncertain as to the cause of the power loss and concerned that the engine would quit operating, the pilot declared a mayday and requested vectors. At the time the pilot made visual contact with the airport, the aircraft was at an altitude of 1100' MSL. The pilot chose to land on runway 09 even though there would be a quartering tailwind present upon landing. During the landing rollout, the pilot felt the tail swing to the left at which time the airplane departed the runway toward right, into the grass and impacted a concrete culvert, separated the right main wheel and slid to a stop. The pilot stated that landing was made with full flaps. Examination of the engine revealed that the number three cylinder had a compression of 35/80 and the number four exhaust valve was stuck in the full open position.
Probable Cause: Loss of engine power due to an open exhaust valve and low cylinder compression. A related factor was the tailwind.
Accident investigation:
 |
|
Sources:
NTSB CHI98LA267
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Mar-2024 18:53 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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