As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE FLIGHT CREW REPORTED STIFF ROLL CONTROL. ON THE GROUND THEY DID A ROLL DISCONNECT AND FOUND THAT THE F/O CONTROL WHEEL WAS VERY STIFF TO OPERATE. MAINTENANCE INVESTIGATION FOUND THE LT WING AILERON QUADRANT CORRODED AND BEARINGS SEIZED. THE LT AILERON QUADRANT WAS REPLACED AND THE ACFT RETURNED TO SERVICE.