On April 23, 2003, at 1653 eastern daylight time, a Cessna 150F, N8082F, operated by Conrad Aero as a rental/instructional airplane, received substantial damage when it veered off the runway during the takeoff portion of a touch and go landing on runway 05 at Dr. Haines Airport (HAI), Three Rivers, Michigan. The airplane impacted a runway sign and nosed over. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 student solo flight was not operating on a flight plan. The pilot was uninjured. The local flight originated from HAI. The accident flight was the student pilot's second solo flight to practice a series of touch and go landings. The pilot touched down with a "nice landing" with 30 degrees of flaps. During the landing rollout, he advanced the throttle and carburetor heat at the same time. At the same time, he pushed in on the yoke and raised the flaps. The airplane then began to turn towards the left. He then reduced the throttle and applied brakes. The pilot stated that the airplane then swerved and he lost control. The airplane veered off the left side of the runway hitting a runway sign and then flipping over. HAI is served by runway 09-27 (4,000 feet by 75 feet, asphalt) and runway 05-23 (2,729 feet by 60 feet, asphalt). Inspection of the runway by the Federal Aviation Administration revealed a right wheel skid mark for about 265 feet. There were no anomalies with the airplane flight control system. The student pilot reported a total flight time of 33.6 hours. The operator stated that they did allow student pilots to perform touch and go landings prior to the accident but were now going to change that policy to only allow student solo pilots to perform full stop takeoff and landings.