On July 5, 2003, at 1030 central daylight time, an experimental amateur-built Aerotrike DPS airplane, which had not been registered with the Federal Aviation Administration, sustained substantial damage during takeoff. The airplane was departing on a local flight from a bean field near Brandon, Iowa, when it hit trees at the end of the field. The uncertificated pilot and one passenger received serious injuries. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed. A witness reported the airplane took off to the west from highway 283. The pilot was seen landing the airplane in a bean field near highway 283 where he picked up one passenger. Once the passenger was seated, the pilot started a takeoff roll from the bean field to the south. The witness reported that when the airplane neared the trees at the end of the field, it "went straight up and went to the left and nose down into the trees." At 0954, the recorded weather at Waterloo Municipal Airport, Waterloo, Iowa, located approximately 27 miles west from the accident site, was: Wind 300 degrees at 6 knots; visibility 10 statute miles; sky condition clear; temperature 25 degrees Celsius; dew point 19 degrees Celsius; altimeter 29.93 inches of mercury.