Accident Overview
A pilot reported that while on approach to Windham Airport, the aircraft's engine began to run roughly and subsequently lost all power. The pilot switched fuel tanks and attempted an engine restart, but these efforts were unsuccessful. He then maneuvered the airplane toward a snow-covered field; however, during the final approach, the aircraft could not clear trees and impacted them.
Post-Accident Findings
After the accident, investigators found evidence of fuel at the scene. Fuel was plumbed to the engine through the left fuel tank. The engine was started and ran continuously on the airframe without interruption, indicating no mechanical failure with the engine or fuel system.
Environmental Conditions
The temperature at the time was 19 degrees Fahrenheit, with a dew point of 13 degrees Fahrenheit. Interpolation of a carburetor icing probability chart revealed that atmospheric conditions were conducive to icing at glide or cruise power.
Pilot Statement
The pilot reported that there were no mechanical deficiencies with the airplane, and stated, "I have reason to believe that carburetor ice was the problem, although I was using carburetor heat at the time."
No official probable cause was determined by investigators.