As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AILERON PRIMARY AUTO PILOT SERVO SEIZED. FLIGHT CREW APPLIED SUFFICIENT FORCE IN AN ATTEMPT TO FREE AILERON MOVEMENT. CAUSING AILERON CONTROL CABLE TO BECOME DISLODGED FROM FORWARD AILERON CONTROL DRUM. INVESTIGATION OF THE SERVO REVEALED A BEARING FAILURE WITHIN THE SERVO ALLOWING BEARING MATERIAL TO RESTRICT SERVO MOVEMENT.