Accident Details
A pilot was performing a maintenance test flight following the completion of an annual inspection on the airplane. During the flight, the pilot reported that the aileron control was ineffective. Specifically, the pilot observed that the right aileron appeared to be disconnected, moving up and down with no corresponding control response. While attempting a right turn, the pilot was unable to bring up the right wing and began losing altitude. The pilot decided to land the airplane on soft, plowed ground. During the landing, the right wing struck the ground.
Aircraft Examination
A post-accident examination of the aircraft was conducted. The right aileron pushrod end bearing bolt was found installed in the bellcrank, but the bolt did not pass through the rod end bearing. This indicated that the pushrod was not properly attached, rendering the aileron control ineffective. No other anomalies were found with respect to the aircraft or its systems.
Maintenance Background
According to maintenance records, the aileron pushrod end bearings were replaced during the annual inspection due to excessive play. The inspection and replacement work had just been completed prior to the test flight.
Outcome
The aircraft sustained damage to the right wing during the forced landing. The pilot was able to exit the aircraft without further incident.