Incident Details
While on a cross-country flight, the pilot began a descent to the destination by reducing engine power. Upon completing the descent, the pilot attempted to add power but the engine did not respond. Subsequently, the pilot performed an off-airport landing onto unsuitable terrain.
Meteorological Conditions
At the time of the incident, the temperature was 34°F and the dew point was 21°F. The skies were clear.
Flight Manual Guidance
The pilot's operating handbook did not include a carburetor-icing chart. The procedures directed the pilot to use carburetor heat "as required."
Investigative Findings
According to information developed by the Canadian Ministry of Transport, the temperature and dew point conditions were within the carburetor icing range for both cruise and idle power settings. The Ministry stated that carburetor heat must be applied whenever power is reduced to provide adequate anti-icing protection.