As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 310, THE AUTOPILOT AND AUTO THROTTLES KICKED OFF. LOST FMAS AND FCP FOR THE REMAINDER OF THE FLIGHT. THE FD WERE NOT WORKING EITHER. REMOVED AND REPLACED FLIGHT CONTROL UNIT (303CA) USING MM 22-15-12-04, PERFORMED AFS/LAND AND LIGHT DISPLAY ALL CHECKED GOOD.