MONTAGUE, CA, USA
N3160N
CESSNA 140
DURING CRUISE FLIGHT THE PILOT HEARD A LOUD BANGING NOISE COMING FROM THE ENGINE COMPARTMENT. THE PILOT REPORTED BEING UNABLE TO MAINTAIN ALTITUDE, AND HE MADE A FORCED LANDING. DURING ROLLOUT THE AIRPLANE COLLIDED WITH A BERM AND NOSED OVER. AN EXAMINATION OF THE ENGINE REVEALED THE NUMBER ONE CYLINDER'S EXHAUST VALVE WAS BROKEN. THE VALVE HAD BEEN IN USE FOR AT LEAST 973 OPERATIONAL HOURS PRIOR TO THE ACCIDENT.
THE FAILURE OF AN EXHAUST VALVE IN THE ENGINE.
Source: NTSB Aviation Accident Database
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