Incident Overview
A pilot conducting an Instrument Flight Rules (IFR) flight experienced an engine failure and executed a forced landing in a muddy corn field. The pilot had obtained a full weather briefing before departure, during which he was advised of an icing advisory north of his route of flight.
Weather Briefing and Diversion
While en route, the pilot contacted Flight Watch for an updated weather briefing and was informed that rain and snow were reported at his destination. The pilot subsequently requested a clearance to an alternate airport. After being told to standby, he contacted the alternate airport's approach control and requested a clearance to land.
Engine Roughness and Failure
According to the pilot, the engine began running rough during the flight. He applied carburetor heat, and after the engine smoothed out, he removed the heat. When the engine again ran rough, he reapplied carburetor heat. While being vectored to the alternate airport, the engine stopped running entirely, necessitating a forced landing.
Post-Accident Inspection
An inspection conducted after the accident failed to reveal any mechanical failure or malfunction that could have caused the engine stoppage.
Atmospheric Conditions
The outside air temperature was 35 degrees Fahrenheit, and the dewpoint was 34 degrees Fahrenheit. According to icing probability charts, these conditions are conducive to serious carburetor ice at cruise power.
Forced Landing
The forced landing was made in a muddy corn field. No further details about the outcome were provided.