ASN Wikibase Occurrence # 248480
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| Date: | Wednesday 3 March 2021 |
| Time: | 12:20 LT |
| Type: |  Cessna 150J |
| Owner/operator: | Private |
| Registration: | N60290 |
| MSN: | 15070201 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 6036 hours |
| Engine model: | Continental O-200 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Joaquin County, Lodi, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Training |
| Departure airport: | Lodi, CA (1O3) |
| Lodi, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot receiving instruction and flight instructor had planned a local instructional flight on the day of the accident. Shortly into the flight after they reached their cruise flight altitude, they experienced a total loss of engine power. The airplane was substantially damaged during a forced landing in a field.
Postaccident examination of the engine revealed that the connecting rod shaft for the No. 3 cylinder had fractured due to fatigue cracking. The buildup of combustion deposits suggested the event was caused by either preignition or detonation or both, which would have been the result of the use of a lower grade fuel or operating the engine at high power settings with an excessively lean mixture.
Although a trace amount of automotive fuel was detected in the fuel line to the carburetor, fuel records indicate that the pilot had been using 100LL consistently. The operating fuel used by the previous owner is unknown; however, the previous owner implied that he used 100LL during conversations with the current owner. The pilot's leaning practices showed that he regularly leaned the mixture to reach best rpm and enrichened three turns.
Probable Cause: A total loss of engine power during cruise flight due to a fatigue crack in the No. 3 cylinder connecting rod shaft resulting from either preignition or detonation, which resulted in a forced landing and impact with terrain.
Accident investigation:
 |
|
Sources:
NTSB WPR21LA121
https://flightaware.com/live/flight/N60290/history/20210303/2036Z/1O3/L%2038.13578%20-121.16756
FAA register: https://registry.faa.gov/aircraftinquiry/Search/NNumberResult
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Mar-2021 22:57 | Geno | Added |
| 03-Mar-2021 23:03 | Geno | Updated [Aircraft type, Registration, Cn, Operator, Nature, Departure airport, Source] |
| 05-Jun-2022 11:18 | Anon. | Updated [Phase] |
| 26-Sep-2022 18:58 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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