What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO PHL DUE TO RUDDER TRIM AND AILERON OUT OF TRIM IN FLIGHT AUTOPILOT 2 WAS ON REQUIRED 3 UNITS LEFT RUDDER TRIM TO FLY LEVEL. THE AIRCRAFT LANDED SAFELY AT PHL WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND RUDDER TRIM ACTUATOR RIG INCORRECT WITH RUDDER TRIM INDICATOR ON PEDESTAL AT ZERO, RUDDER IS DEFLECTED 2-3 INCHES TO THE RIGHT. REPLACED RUDDER TRIM ACTUATOR PER AMM 27-22-51-401. VERIFIED WITH RUDDER TRIM INDICATION AT ZERO, RUDDER TRAILING EDGE IS ALIGNEDWITH RIG INDEX (TRIANGLE ON TRAILING CONE).