Probable cause
The loss of engine power due to oil starvation for reasons that could not be determined because engine examinations revealed no malfunctions or failures that would have led to oil starvation.
NTSB analysis
While in cruise flight, the pilot-rated passenger and flight instructor heard a knocking sound from the engine. The flight instructor reduced the engine power and diverted the airplane toward the nearest airport. Subsequently, the pilots heard a loud "clunk" sound from the engine, the engine lost power, and smoke filled the cockpit. The flight instructor executed a forced landing to a field, and the airplane nosed over. An examination of the engine found that the No. 3 cylinder had failed due to oil starvation; however, a reason for the oil starvation could not be determined.
Text from the NTSB. Open the NTSB docket for CEN12LA455 for the full record.
Event
- Date
- Jul 17, 2012
- Type
- Accident
- Place
- Shelby, Illinois
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Cessna 175A
- N-number
- N7003E
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.