As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3310 THE CAPTAIN REPORTED THAT AFTER TAKEOFF FROM DFW, RECEIVED A RUDDER SYSTEM 1 AND 2 FAIL AND AUTOPILOT FAIL MESSAGE. THE CAPTAIN ELECTED TO RETURN TO DFW. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE PRESSURE SWITCH NR 2 IAW EMB-145 AMM 27-23-04. THE OPERATIONAL CHECK AND LEAK CHECK WAS GOOD. NO MESSAGE NOTICED. THE AUTOPILOT OPERATIONAL CHECKS WERE GOOD IAW AMM 22-11-00. THE AIRCRAFT WAS RETURNED TO SERVICE.