Incident Details
A flight instructor reported that a student pilot, who had accumulated approximately 10 hours of flight time since purchasing the aircraft, was practicing touch-and-go landings after completing air work. The first five landings were conducted without incident. During the landing roll of the sixth touch-and-go, the aircraft began to pull to the right. The instructor instructed the student to release the right brake and rudder, but the aircraft responded as if the student had increased brake and rudder pressure.
The instructor immediately applied full left rudder and braking action and reduced power to idle. Despite these efforts, the condition could not be overcome. The aircraft continued to skid toward the right side of the runway in a side-skipping motion, resulting in a partial ground loop. The aircraft came to rest on the side of the runway.
Post-Inspection Observations
After both pilots exited the aircraft to inspect for damage, they noted that when they attempted to move the tail back onto the runway, the aircraft would not move. They also observed that the right brake was very hot and smelled of hard braking, despite not having applied the right brake during the rollout. Skid marks from both main gear wheels were present on the runway.
A Federal Aviation Administration Inspector examined the aircraft after it had been moved to a hangar. The inspector reported no evidence of a mechanical failure or malfunction with the brake system and did not note any evidence of heat distress.