On September 10, 2004 at 1110 eastern daylight time, a Maule M4-210C, N270JM, registered to and operated by a private pilot, flipped over on its back during landing roll on runway 06 at Gainesville Regional Airport in Gainesville, Florida. The personal flight operated under the provisions of Title 14 CFR Part 91. Visual meteorological conditions prevailed and no flight plan was filed. The airplane was substantially damaged. The private pilot and certified flight instructor/commercial pilot-rated passenger were not injured. The flight originated from the Gainesville Regional Airport, Gainesville, Florida on September 10, 2004 at 1030. The pilot was performing takeoffs and landings that morning at Gainesville Regional Airport. The pilot was in the left seat and the pilot-rated passenger was following along on the controls from the right seat. The airplane made a normal approach to land on runway 06. According to the pilot, during landing rollout the pilot-rated passenger inadvertently applied both wheel brakes and the airplane nosed over. The pilot did not report any mechanical problems with the airplane prior to the accident. Examination of the wreckage revealed damage to the propeller, engine mounts, cowling, right wing, left wing tip, vertical fin, rudder and windshield.