Primary finding
Probable cause
Failure of the tailwheel locking mechanism, which resulted in a loss of control during landing and a runway excursion.
Investigator assessment
Analysis narrative
The pilot of the vintage tailwheel-equipped airplane reported that he made a three-point landing on the runway centerline, aligned with the runway, in light wind. Upon touchdown, the airplane swerved left. The pilot attempted to correct with right rudder and brake application; however, the airplane departed the left side of the runway and ground looped, resulting in substantial damage to the right wing and empennage. The pilot examined the tailwheel after the accident and noted that its locking mechanism had failed. Specifically, he believed that the spindle or brass thrust ring had failed internally.