NTSB Factual Report

The airline transport pilot was receiving dual instruction from the flight instructor for the purpose of receiving a tail wheel endorsement. He had accumulated a total of 7 hours tail wheel instruction in the accident airplane. The flight instructor reported that during the landing roll, the airplane yawed to the right and entered a ground loop which collapsed the left main landing gear.

NTSB Probable Cause

The failure of the student to maintain directional control during landing and the flight instructor's inadequate supervision of the flight.