Flight History
A certificated flight instructor (CFI) reported that the purpose of the flight was to provide an aerobatic lesson to an airline transport pilot (ATP) in a tail wheel-equipped airplane. After completing air work, the pilots returned to the airport. The ATP decided to practice touch-and-go takeoffs and landings. The first three landings were uneventful. For the fourth landing, the ATP planned a full stop with the airplane configured for a three-point landing.
Accident Sequence
Following a normal approach and touchdown, the airplane was on the landing roll when it suddenly turned to the left approximately 30 degrees relative to the runway centerline. Both pilots applied full right rudder, but the airplane continued the left turn. The CFI attempted to apply light right brake pressure, but the airplane exited the left side of the runway and ground looped. The airplane came to rest facing approximately 270 degrees from the runway centerline. During the accident sequence, damage was incurred to the right wing tip and left aileron.
Post-Accident Reports
Both pilots reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine.