Accident
During a landing approach to the Kenai River, the pilot of an airplane was on the base leg when the engine ceased producing power. Unable to glide to the river, the pilot maneuvered for a forced landing on a road. During the descent, the airplane struck several trees before touching down on the road surface.
Investigation
Post-accident examination of the airplane and engine revealed no mechanical malfunction. The pilot reported that during maneuvering and the traffic pattern, he was carrying only 15 inches of manifold pressure and had applied carburetor heat. He stated he believed carburetor ice caused the power loss, but he was uncertain whether the carburetor heat was functioning effectively.
Findings
No mechanical issues were identified, and the power loss remains unexplained by physical evidence. The pilot's operation at low manifold pressure with carburetor heat applied, coupled with his uncertainty about its effectiveness, suggests a potential contributing factor, though the source does not confirm this as a cause.