Overview
A flight instructor, who was not current in the airplane, was providing a biennial flight review (BFR) to a commercial pilot. The instructor occupied the right seat, while the commercial pilot sat in the left seat. At the conclusion of the BFR, it was agreed that the instructor would perform a full stop landing.
Approach and Landing
The approach to runway 15 was conducted normally in a moderate right crosswind, with winds reported as 5 to 10 knots and variable. The landing was a full stall type, executed with a slight crab into the crosswind. The tail wheel touched down first, followed by the main landing gear.
Post-Landing Sequence
Shortly after touchdown, the airplane veered to the right and entered a ground loop. During the ground loop, the left main landing gear collapsed. The airplane came to a halt off the right side of runway 15.
Aircraft Damage
The left main landing gear collapsed as a result of the ground loop. No other damage is specified in the report.