Incident Overview
A pilot reported that while en route at 9500 feet, after approximately 20 minutes of level flight, the engine power decreased to below idle rpm. Prior to the power loss, fuel flow had been 13 gallons per hour (gph); after the power loss, fuel flow was 28 gph. The outside air temperature was -20 degrees Celsius.
Pilot Actions
The pilot attempted to regain power, including the use of carburetor heat, but these efforts were unsuccessful. He subsequently performed a forced landing in a field.
Post-Landing Inspection
The pilot, who is also an aircraft mechanic, inspected the engine after landing. He reported finding no discrepancy and started the engine, which he stated 'ran good.'
No further details regarding the aircraft, registration, date, location, or occupants were provided in the source.