What was found
THE CREW REPORTED THAT THE AUTO PILOT PITCH TRIM HAD FAILED DURING FLIGHT DURING A TRIP TO HOME BASE. TROUBLESHOOTING IDENTIFIED THAT THE NR 1 FCC WAS DEFECTIVE & REQUIRED REPLACEMENT. THE DEFECTIVE COMPUTER WAS R & R BY A NO FAULT FOUND OVERHAULED UNIT SN 2071. THE NEXT FLIGHT THE CREW REPORTED THAT THE AUTO PILOT PITCH TRIM FAILED IN FLIGHT. THE MAINTENANCE VENDOR EVALUATED THE FAULT & FOUND THAT THE NR 1 FCC SN 2071 WAS DEFECTIVE. THE FCC SN 2071 WAS R & R WITH A TESTED UNIT. TO DATE, NO FAULTS HAVE BEEN REPORTED FOR THE AP SYS.