NTSB Identification: FTW92LA181.
The docket is stored on NTSB microfiche number 47318.
Accident occurred Sunday, July 19, 1992 in RESERVE, LA
Probable Cause Approval Date: 06/11/1993
Aircraft: CESSNA 120, registration: N89970
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PILOT EXPERIENCED A COMPLETE ENGINE FAILURE AFTER TAKEOFF WHILE PASSING THROUGH 200 FEET AGL. THE AIRPLANE SUBSEQUENTLY LANDED IN A ROUGH OPEN FIELD AS THERE WAS NO OTHER SUITABLE TERRAIN. INVESTIGATION REVEALED THAT THE NO. 1 CYLINDER EXHAUST VALVE HAD SEPARATED AND THE STEM WAS INGESTED INTO THE ENGINE. THE VALVE HEAD WAS FOUND IMBEDDED IN THE PISTON HEAD. DUE TO THE LEVEL OF DAMAGE SUSTAINED BY THE VALVE PARTS, THE EXACT FAILURE MODE COULD NOT BE DETERMINED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE LOSS OF ENGINE POWER DUE TO THE VALVE FAILURE. A FACTOR WAS THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.

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