ASN Wikibase Occurrence # 296486
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| Date: | Sunday 27 October 2002 |
| Time: | 10:10 LT |
| Type: |  Cessna 152 |
| Owner/operator: | William Bohrer |
| Registration: | N49422 |
| MSN: | 15281253 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 6037 hours |
| Engine model: | Lycoming O-235 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Springfield, Ohio -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Moraine, OH (I73) |
| Bucyrus, OH (17G) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane had undergone a 100-hour inspection during which the number 3 cylinder was replaced. During the first flight after maintenance was performed, while en route to the destination airport, the airplane experienced a partial loss of power. The pilot prepared for a precautionary landing at a nearby airport; however, while en route to the airport, the pilot realized he would not be able to make it to the runway, and performed a forced landing on a football field. Examination of the engine by a Federal Aviation Administration (FAA) inspector revealed the number 3 cylinder exhaust rocker arm set screw had backed out and the jam nut was observed lying in the rocker cover. Additionally, the "1102" plug was missing from the intake port of the number three cylinder. A measurement was taken of the tappet clearance (between the rocker foot and the valve stem tip) and noted to be .300 inch. According to published Lycoming Service Instructions, the tappet clearance should have been .006 to .012 inch.
Probable Cause: Inadequate installation of the number 3 cylinder.
Accident investigation:
 |
|
Sources:
NTSB IAD03LA010
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 07:06 | ASN Update Bot | Added |
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