The aircraft crashed on the second aborted takeoff attempt. The pilot said that the aircraft was not accelerating properly on the first attempt and that the engine lost power on the second attempt. Ground witnesses said that the air conditioner condenser door was open and that the flaps were up on both takeoff attempts. The pilot said he turned off the air conditioner and deployed 10 degrees of flaps. Examination of the wreckage revealed that the air conditioner condenser door was open, the compressor clutch was disengaged from the engine, and that the flaps were up. Calculations indicate that the aircraft was 300 lbs over maximum gross takeoff weight. Calculations also indicate that the aircraft would require 2,600 ft of ground roll to take off, and a total of 4,700 ft to clear a 50-ft obstacle. The runway has a published length of 4,020 ft with an additional 200 ft of overrun. There were trees at the departure end of the runway.