Incident Overview
During the takeoff roll, just after the tail was raised, the pilot's seat unexpectedly slid fully aft on its rails. This prevented the pilot from reaching the rudder pedals. As a result, the aircraft swerved to the left, ground looped, and nosed over.
Occupant Injuries
The pilot was not injured. The passenger sustained a minor cut.
Pilot Report
The pilot reported that the pilot seat rail failed to lock, which allowed the seat to move.
Examination Findings
An examination of the seat rail and locking mechanism after the accident did not reveal any evidence of a failure or malfunction of the system.