Accident Description
The pilot performed an engine runup and allowed the engine to run for about six additional minutes before beginning the takeoff. During the takeoff sequence, upon reaching approximately 100 feet altitude, the pilot observed a decline in engine revolutions per minute and manifold pressure. A forced landing was accomplished, and the aircraft flipped inverted in a milo field off the runway.
Post-Crash Inspection
Post-crash inspection of the aircraft revealed no evidence of mechanical problems or fuel contamination.
Carburetor Icing Conditions
Icing probability charts indicated that the weather conditions were conducive to the formation of carburetor ice. The pilot did not use carburetor heat during the takeoff roll or during climbout. He indicated that he checked its function during the engine run-up, but did not use it after that.