As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO PILOT BOX CONTINUOUSLY FLASHED AMBER THEN WHITE, AUTO PILOT WOULD NOT ENGAGE AND BOTH MULTIFUNCTION CONTROL DISPLAY UNIT WOULD NOT RESPOND. COMPLIED WITH FIM TASK AND RETURN TO SERVICE OF AUTO PILOT SYSTEM ON BOTH NR 1 AND NR 2 FLIGHT CONTROL COMPUTER, NO OTHER FAULTS NOTED. OK FOR SERVICE.