At 1812 Eastern time, the airplane descended into a rock quarry while maneuvering for a forced landing. Visual conditions prevailed; the pilot reported minor injuries, and the airplane was substantially damaged. According to the pilot, at an attitude of approximately 2000 feet, and five miles out from Runway 20, the engine began to lose power. The pilot switched from the left main fuel tank to the right one. Engine power was regained for a brief moment and then started to decrease again. The pilot switched from the right main tank to the auxiliary tip tanks, and noted no increase in engine power.