What was found
DURING CRUISE THE CREW REPORTED THAT THERE WAS A TOTAL PITCH TRIM FAILURE. THE AIRCRAFT RETURNED AND LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE INSPECTED THE PITCH TRIM SYSTEM, RESET CIRCUIT BREAKERS ASSOCIATED WITH THE PITCH TRIM SYSTEM, AND CLEANED THE THE FIRST OFFICER'S AUTOPILOT DISCONNECT SWITCH. THE PITCH TRIM SYSTEM WAS OPERATIONALLY TESTED AND THE AIRCRAFT WAS RETURNED TO SERVICE.