Incident Summary
The certified flight instructor (CFI) reported that the purpose of the flight was to provide the private pilot with recurrent training toward obtaining a flight review. The student pilot was not current at the time of the flight. The aircraft involved was a conventional gear airplane.
Sequence of Events
After performing basic airwork, the CFI asked the student to perform a wheel landing. The CFI stated that the student successfully completed the landing, but during rollout, a directional control deficiency was observed. On the subsequent landing, the airplane veered to the right during rollout, and the student attempted to regain directional control.
The CFI reported that due to his lengthy personal relationship with the student, he delayed taking control of the airplane. By the time he took the controls, it was too late to avoid an impending ground loop. As the airplane came to a stop on the runway's gravel shoulder, the left main landing gear separated from the gear box, and the left wing broke.
Outcome
The aircraft came to rest on the gravel shoulder adjacent to the runway with substantial damage to the left main landing gear and left wing. The CFI and student were not reported as injured. No further details about the aircraft or occupants were provided.