AFTER 30 MINUTES OF LOCAL FLIGHT, ON A DARK NIGHT, THE PILOT INCREASED THE THROTTLE SETTING AFTER SELECTING APPROACH FLAPS. THERE WAS NO RESPONSE FROM THE ENGINE. A FORCED LANDING WAS INITIATED AND THE AIRCRAFT COLLIDED WITH TREES AND TERRAIN. A SUBSEQUENT INVESTIGATION OF THE ENGINE, FUEL SUPPLY, MAGNETOS AND INDUCTION SYSTEM REVEALED NOTHING WHICH WOULD HAVE PREVENTED THE ENGINE FROM DEVELOPING NORMAL POWER.

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

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

Contributing Factors

LIGHT CONDITION..DARK NIGHT

Contributing Factors

OBJECT..TREE(S)

Contributing Factors

WEATHER CONDITION..CARBURETOR ICING CONDITIONS

Contributing Factors

TERRAIN CONDITION..NONE SUITABLE

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