NTSB Identification: FTW95LA175.
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Accident occurred Wednesday, April 19, 1995 in CRESCENT, OK
Probable Cause Approval Date: 08/23/1995
Aircraft: BRIGGS GLASAIR III, registration: N55EE
Injuries: 1 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 LANDED AT PONCA CITY, OKLAHOMA, AFTER A FLIGHT FROM ST. CLOUD, MINNESOTA. THE ENGINE WOULD NOT START AFTER THE AIRPLANE WAS REFUELED. AFTER MAKING SEVERAL PERFUNCTORY CHECKS, THE ENGINE STARTED. IT RAN ROUGH INITIALLY, THEN SMOOTHED OUT. THE PILOT MADE A SHORT TEST FLIGHT AND DISCOVERED THE ENGINE OPERATED SMOOTHLY AT LOW AND HIGH MANIFOLD PRESSURE SETTINGS, BUT RAN ROUGH AT MID-RANGE MANIFOLD PRESSURE SETTINGS. SUSPECTING A FUEL VAPOR LOCK, THE RESTRICTOR VALVE IN THE FUEL INJECTOR WAS REPLACED. THE PILOT TOOK OFF FOR OKLAHOMA CITY, OKLAHOMA. NEAR CRESCENT, OKLAHOMA, THE ENGINE LOST POWER AND THE PILOT MADE A FORCED LANDING IN A WHEAT FIELD. DURING THE LANDING ROLL, THE NOSE WHEEL HIT A SMALL DIP IN THE FIELD AND THE AIRPLANE NOSED OVER.

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

TOTAL NON-MECHANICAL POWER LOSS DUE TO A FUEL SYSTEM VAPOR LOCK. A FACTOR WAS THE UNEVEN TERRAIN ON WHICH THE FORCED LANDING WAS MADE.

Full narrative available

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