As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4155 THE CREW REPORTED THE RUDDER SYSTEM 1 AND 2 FAILED IN CLIMB. THE CREW DECLARED AN EMERGENCY AND DIVERTED TO CMH. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE RUDDER SYSTEM 2 PRESSURE SWITCH PER AMM 27-23-04. THE OPERATIONAL CHECK WAS GOOD IAW AMM 27-23-00. NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.