On September 16, 2003, about 1400 eastern daylight time, a Raytheon B36TC, N3212D, was substantially damaged during a forced landing, following a loss of engine power at Clermont County Airport (I69), Batavia, Ohio. The certificated private pilot was not injured. Visual meteorological conditions prevailed for the flight that departed Highland County Airport, Hillsboro, Ohio. No flight plan was filed for the personal flight conducted under 14 CFR Part 91. The pilot stated that while on the downwind leg for runway 22, a 3,568-foot long runway, the engine lost all power. The pilot activated the electric fuel pump and turned base leg for the runway. The engine regained partial power, but would not develop full power. The pilot intentionally flew a high approach as a precaution, and the airplane touched down hard, about half-way down the runway. It bounced several times, skidded, and traveled off the end of the runway. During the overrun, the left main landing gear collapsed, and the right wing sustained substantial damage. The airplane came to rest upright in a grass area beyond the end of the runway. A Federal Aviation Administration inspector examined the airplane after the accident. He noted approximately 27 gallons of fuel in each wing tank. The inspector, and a representative from the engine manufacturer, subsequently test ran the engine with no difficulty or discrepancies noted. The engine ran at idle and full power without interruption, and a successful magneto check at 1,700 rpm was completed.