What happened
During a flight conducted under Title 14, CFR Part 91 for dual instruction, an aircraft experienced a ground loop during the landing phase. According to the flight instructor, the student pilot over-corrected with the rudder, causing the airplane to swerve to the right. The student then applied full left rudder in an attempt to correct the deviation. As the instructor attempted to take control of the aircraft, the student applied full right rudder, causing a secondary swerve to the right.
The instructor noted that the rightward swerve became too severe to correct because there are no brakes on the right-side rudder pedals. This resulted in a ground loop to the right, which caused the left main landing gear to collapse. The incident resulted in structural damage to the left wing and the fuselage. There were no injuries reported.
Findings
Prior to the accident, there were no known mechanical problems with the aircraft. The instructor noted that the student's over-controlling should have been recognized earlier to allow for a takeover of control before the ground loop occurred.