What happened
During a landing sequence, the pilot performed a normal downwind to final approach, reporting a smooth touchdown and initial rollout. However, as the aircraft continued along the runway, the tail wheel began to wobble or chatter, causing the aircraft to drift toward the left side of the runway.
In an attempt to correct the drift and return to the runway centerline, the pilot increased engine power and applied right rudder. This correction resulted in excessive rudder input, which triggered a ground loop. The aircraft completed a 180-degree turn during the event. During the maneuver, the left main landing gear collapsed, causing the left wing to strike the ground. The aircraft sustained substantial damage.
Findings
The pilot reported no mechanical malfunctions with the aircraft prior to the loss of control. The incident was attributed to over-controlling the aircraft via excessive right rudder input in response to tail wheel chatter.