ASN Wikibase Occurrence # 214447
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| Date: | Tuesday 14 August 2018 |
| Time: | 08:00 |
| Type: |  Cessna 150M |
| Owner/operator: | Private |
| Registration: | N6341K |
| MSN: | 15077654 |
| Year of manufacture: | 1975 |
| Engine model: | Continental O-200A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | North of Madison Municipal Airport (KMDS), Madison, SD -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Madison Airport, SD (XMD/KMDS) |
| Madison Airport, SD (XMD/KMDS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The student pilot reported that he was flying north of the departure airport when the airplane's engine began running roughly. He attempted to return to the airport but was unable to reach the airport and landed in a cornfield. The airplane nosed over in the 7-ft-tall corn and sustained substantial damage to both wings. Examination of the airplane revealed that the engine's No. 3 cylinder exhaust valve was stuck in its valve guide, and the No. 3 exhaust valve rocker arm was fractured. A maintenance record entry indicated that the Nos. 1, 3, and 4 cylinders had experienced valves sticking and had been sent back to the overhaul vendor for service. The cylinders were reinstalled 3 days before the accident. Based on the available evidence, the partial loss of engine power was likely due to the No. 3 cylinder exhaust valve becoming stuck, which resulted in a secondary overload failure of the associated rocker arm and a substantial reduction in engine power output.
Probable Cause: A stuck No. 3 cylinder exhaust valve, which resulted in failure of the associated rocker arm, a partial loss of engine power, and the subsequent forced landing into tall vegetation.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=6341K
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Aug-2018 20:14 | Geno | Added |
| 16-Aug-2018 04:49 | Geno | Updated [Aircraft type, Registration, Cn, Operator, Location, Source, Damage, Narrative] |
| 01-Oct-2019 18:12 | ASN Update Bot | Updated [Time, Country, Departure airport, Destination airport, Source, Damage, Narrative, Accident report, ] |
| 01-Oct-2019 19:52 | harro | Updated [Country, Departure airport, Destination airport, Source, Narrative] |
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