As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND THE AILERON CENTER SHAFT BEARINGS AND CENTER SHAFT EXTENSION TO BE OUT OF SPECIFICATION. THIS WAS THE CASE IN BOTH RT AND LT WINGS. THE BEARINGS, PN B65NS, HAD EXCESSIVE WEAR. THE TOP BEARING, DUE TO POOR QC IN THE BORE, HAD ALLOWED TO MOVE DOWN, OUT OF POSITION. THIS CAUSED IT TO LOSE ROTATIONAL STABILITY. THIS ALLOWED THE AILERON TO HAVE EXCESSIVE MOVEMENT.