On March 10, 1994, a Mooney M20C (registration N6811N) operated by Michael Geyer was involved in an aviation accident near Richland Center, WI. Investigators recorded the probable cause as: improper use of carburetor heat. Factors related to the accident were carburetor icing conditions, and the sign and fence poles. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot reported engine power loss during cross-country flight, attempted to reach a nearby airport but performed a forced landing on a road, contacting obstacles. Post-accident inspection found no mechanical failure. Pilot reported icing conditions.
Incident Overview
During a cross-country flight, the pilot reported a loss of engine power. He was provided with information regarding a nearby airport but was unable to reach it. A forced landing was subsequently made on a road.
Sequence of Events
The airplane contacted sign posts, fence posts, and a ditch during the landing. A post-accident inspection failed to reveal any mechanical failure or malfunction.
Weather Conditions
The pilot reported to ATC that he was encountering ice pellets and picking up rime ice during the flight. At the time of the accident, the temperature was 35 degrees Fahrenheit and the dewpoint was 21 degrees Fahrenheit. Icing probability charts indicate these conditions were conducive for light to moderate carburetor ice at glide and cruise power.