As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW NOTED THAT THE RUDDER SYSTEMS NR 1 AND NR 2, INOPERATIVE. ON DEPARTURE, THE CREW DECLARED EMERGENCY. PERFORMED AN EMERGENCY DESCENT. THE AIRCRAFT RETURNED AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 RUDDER SYSTEM PRESSURE SWITCH. PERFORMED AN OPERATIONAL CHECK, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.