Incident Overview
A pilot was notified of existing and forecast icing conditions along his intended route. While flying an approach near Stevens Point, Wisconsin, the pilot reported ice accumulation on his windscreen beginning approximately ten minutes from the airport. He requested and received clearance for a full VOR approach.
Approach and Descent
During the approach, the pilot reported that the aircraft accumulated 3/4 inch of ice. He descended to the minimum descent altitude (MDA) but did not have the airport in sight. After spotting a road, he continued descending below the MDA and proceeded toward the airport. Upon reaching the airport, he was directly above it and attempted a circling approach to runway 12.
Engine Failure and Impact
The pilot stated that the engine failed, and the aircraft struck trees before nosing into the ground. A witness at the airport observed the airplane flying overhead at an estimated altitude of 50 to 75 feet. The witness reported that the engine sounded normal at that time. The airplane then disappeared into haze and impacted the ground shortly afterward.
Post-Accident Inspection
An inspection of the engine revealed that it had continuity and showed no indications of mechanical problems.