What was found
IAH- THE CREW NOTED THAT RUDDER SYSTEM #2 FAIL ON EICAS IN FLIGHT, THE AIRCRAFT RETURNED TO IAH AND, LANDED WITHOUT INCIDENT. IAH- MAINTENANCE REMOVED AND REPLACED THE #1 RUDDER PRESSURE SWITCH, PERFORMED A OPERATIONAL CHECK , NO DEFECTS NOTED, AND, THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.