NTSB Identification: SEA95LA134.
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Accident occurred Saturday, July 01, 1995 in LEWISTON, MT
Probable Cause Approval Date: 02/27/1996
Aircraft: CESSNA 210B, registration: N4GY
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.

WHILE MANEUVERING OVER MOUNTAINOUS TERRAIN AT 500 FEET ABOVE GROUND LEVEL, THE AIRPLANE PASSED OVER A RIDGE LINE THEN DROPPED INTO A CANYON. THE PILOT STATED THAT A 'SEVERE DOWNDRAFT JOLTED THE AIRPLANE...,' AND THE ENGINE LOST POWER. THE PILOT WAS UNABLE TO RESTART THE ENGINE AND THE LANDING GEAR WOULD NOT LOCK DOWN. A FORCED LANDING WAS MADE TO AN OPEN ROUGH FIELD. DURING THE LANDING ROLL, THE AIRPLANE COLLIDED WITH THE TERRAIN. AN EXAMINATION OF THE WRECKAGE REVEALED A TRACE OF WATER CONTAMINATION IN THE FUEL SYSTEM. NO EVIDENCE WAS FOUND TO INDICATE A MECHANICAL FAILURE OR MALFUNCTION.

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

LOSS OF ENGINE POWER DUE TO UNDETERMINED REASONS, AND THE LACK OF A SUITABLE AREA FOR THE FORCED LANDING.

Full narrative available

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