On August 27, 2005, at 0802 mountain daylight time, a Cessna 180J, N91245, piloted by a private pilot, was substantially damaged during a forced landing south of the Afton Municipal Airport (AFO), Afton, Wyoming. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 CFR Part 91 without a flight plan. The pilot sustained no injuries. The cross-country flight originated at Morgan, Utah, at 0700, and was en route to Afton, Wyoming. According to the pilot, he approached AFO in the traffic pattern. On final approach, he reduced power, applied carburetor heat, and descended towards the airport. He applied throttle approximately 200 feel agl to stabilize the approach, but the engine did not respond. He stated that the propeller was windmilling, but the engine was not producing any power. He made a forced landing in a field. The airplane struck a fence post, and a parked car, and ground looped before coming to rest 200 yards short of the airport. The left wing was crushed up and aft, the left stabilizer was destroyed, and the right wing spar was bent aft. An examination of the airplane's engine, engine controls, and other systems revealed no anomalies.