What was found
CREW REPORTED THAT DURING CLIMBOUT THEY RECEIVED A YAW DAMPNER FAIL MESSAGE FOLLOWED BY A RUDDER SYSTEM ONE AND TWO INOPERATIVE MESSAGE. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND WAS ABLE TO RESET THE SYSTEM, HOWEVER, THE MESSAGES RETURNED. DISPATCH AND THE CREW DECIDED TO RETURN TO THE FIELD. THE CREW DID NOT DECLARE AN EMERGENCY AND EXPERIENCED NO ADVERSE EFFECTS WITH FLIGHT CONTROLS. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED RELAYS K0364 AND K0365 AND THE RUDDER SYSTEM NUMBER TWO PRESSURE SWITCH.