Probable cause
Failure of the engine exhaust valve during cruise flight, which resulted in a loss of engine power and a forced landing.
NTSB analysis
The pilot stated that during cruise flight the airplane engine began to run rough and shake violently. The pilot initiated a climb to a higher altitude and diverted to the nearest airport. The engine subsequently lost power and the pilot performed a forced landing on grass field, where the airplane struck a fence and sustained substantial damage. Postaccident examination of the engine revealed that the No. 3 cylinder exhaust valve failed. At the time of the accident, the engine exceeded the engine manufacturer’s time between overhaul period specifications as outlined in the Continental Motors Service Information Letter SIL98-9E, which is not mandatory for Part 91 operations.
Text from the NTSB. Open the NTSB docket for CEN23LA040 for the full record.
Event
- Date
- Nov 20, 2022
- Type
- Accident
- Place
- Cypress, Texas
- Highest injury
- Minor
- Minor injuries
- 2
- Weather
- Visual (VMC)
- Light
- Day
Cessna 150L
- N-number
- N10612
- Category
- Airplane
- Year built
- 1973
- 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.