Accident Overview
The accident occurred during tailwheel transition flight instruction. The first pilot, a certificated flight instructor, was providing instruction to the second pilot, a certificated private pilot. Eight successful stop and go landings had been completed prior to the accident landing. During the landing roll on runway 19, the second pilot applied the brakes. The airplane subsequently ground looped to the right, and the left wing struck the ground, resulting in substantial damage to the left wing.
Pilot Statements
The first pilot reported that brake pedals were only installed at the left side pilot position. After the accident, the second pilot told the first pilot that during brake application, the left brake pedal "felt mushy" and was less effective than the right brake.
Inspection Findings
An FAA airworthiness inspector examined the airplane at the accident airport and reported signs of brake fluid leaking from the left brake assembly. Disassembly of the left brake assembly revealed severely weathered and worn seals.