What was found
ACRFT DEPARTED KVNY HEADING TO KDAL. APPROXIMATELY ONE HOUR INTO THE FLIGHT THE AUTOPILOT DISENGAGED AND WOULD NOT RE ENGAGE. THE CAPTAIN DECIDED TO DIVERT INTO KELP, HOME BASE MAINTENANCE FACILITY. THE AIRCRAFT LANDED SAFELY IN ELP. ATI MAINTENANCE WAS ABLE TO DUPLICATE THE ISSUE ON THE GROUND. THE AUTOPILOT WAS MELED TO CONTINUE THE FLIGHT. THE TRIP WAS COMPLETED AND THE AIRCRAFT RETURNED TO ELP. IT WAS DETERMINED ONE FLIGHT CONTROL COMPUTER HAD FAILED. A REPLACEMENT FCC CARD WAS INSTALLED AND THE AUTOPILOT ENGAGED AND FUNCTIONALLY CHECKED GOOD. A TEST FLIGHT WAS COMPLETED WITH NO AUTOPILOT ISSUES, THE AIRCRAFT WAS RETURNED TO SERVICE AND THE MEL WAS CLEARED.