What was found
(CAN) THE PILOT NOTICE THAT THE AIRCRAFT WAS FLYING WITH A SLIGHT RIGHT WING DOWN AND TRIED TO LEVEL THE AIRCRAFT WITH THE AILERON TRIM. THE TRIM DID NOT RESPOND TO TRIM COMMAND FROM THE PILOTS TRIM. THE PILOT CHECKED BREAKERS AND CONTINUED TO LAND. AIRCRAFT ENGINEERS CONFIRM THE AILERON TRIM DID NOT RESPOND TO BOTH PILOT OR CO-PILOT TRIM COMMANDS AND CHECKED ALTERNATE TRIM AS WELL. THE AILERON TRIM ACTUATOR WAS CHANGED. SYSTEM CHECKED SERVICEABLE AND AIRCRAFT RETURN TO SERVICE. NO FURTHER ACTION REQUIRED.