What was found
AIR RETURN ORD ACCOUNT FLIGHT CONTROL ISSUE. EMERGENCY WAS DECLARED AND FLIGHT LANDED OVERWEIGHT WITHOUT INCIDENT. UNABLE TO CONTROL RUDDER, TRIM STUCK 2-5 UNITS TO RIGHT, UNABLE TO CENTER, LANDED 5 UNITS TO THE LEFT. THE AIRCRAFT WAS GROUNDED. REPLACED AILERON AND RUDDER TRIM CONTROL MODULE IAW AMM 27-11-94 AND RUDDER TRIM ACTUATOR PER AMM 27-21-87. OPERATIONS CHECK GOOD. THIS SDR IS FOR RUDDER TRIM CONTROL MODULE.