As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH EITHER AUTO PILOTS ENGAGED AND ATTEMPTING TO ACCELERATE THE AIRCRAFT PITCHES UP. UPDATE DURING BITE CHECK OF THE AUTOPILOT BITE, FOUND FCC-B FAULTED, DADC2 FAULTED. DURING FULL TEST OF AUTOPILOT, OBSERVED FAULT WITH AFAU. REPLACED FCC-B, DADC, AND AFAU. ACCOMPLISHED THE AUTOPILOT CAT III CHECK WITH NO FAULTS FOUND.