Accident Details
The pilot reported that shortly after completing a three-point landing, a pronounced vibration and shimmy developed in the area of the tailwheel. Immediately following the onset of the vibration, the airplane began to pull to the right. Despite the pilot's corrective inputs, the airplane continued tracking right and departed the runway edge.
Sequence of Events
After exiting the runway, the airplane struck a berm and subsequently ground looped. The pilot conducted a post-accident examination of the tailwheel assembly, which disclosed that the left control spring was disconnected. The pilot expressed the belief that the control spring had become disconnected as a result of the shimmy experienced during the landing.
Post-Accident Findings
No other mechanical anomalies were reported. The event occurred during daylight conditions, with no mention of weather or air traffic control involvement. The aircraft came to rest off the runway, with no information provided regarding injuries or damage extent.