On January 21, 1994 at 1141 central standard time, a Cessna 152, N6374M, was substantially damaged during an aborted takeoff at the Tulsa, Oklahoma, Richard L. Jones, Jr. Airport. The student pilot sustained minor injuries. Visual meteorological conditions prevailed for the solo instructional flight. Tower personnel reported that the aircraft was cleared to taxi into position and hold on runway 19R. Shortly after holding, the aircraft initiated a takeoff roll without clearance. The tower instructed the pilot to abort the takeoff. The pilot reported that he heard what he believed to be a clearance for him to takeoff, which he acknowledged. After the aircraft attained minimum flying airspeed, he was instructed to abort the takeoff. He then reduced power and began braking. The pilot reported, "the left brake grabbed harder than the right and I turned toward the ditch." He further stated that the airplane departed the runway, struck a PAPI light, and came to rest in sand. No mechanical malfunctions were reported. In a statement signed by the student pilot dated January 20, 1994, he reported that "apparently the left brake was pushed harder than the right."