As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAG ON F/O ND LT NAV DISENGAGED. WHILE ATTEMPTING TO RUN QRH, CONDITION DISAPPEARED. DFCS BITE LOGGED FMC DATA FAULT, FMC BITE LOGGED INTERMITTENT POSITION FAULT. ACCOMPLISHED FMC OPS TEST IAW 34-61-00 AND DFCS LRU REPLACEMENT TEST FOR FMC, ALL CHECKED NORMAL. ACFT REMAINS CAT III AUTOLAND/HGS, SCREW REFLECTS SAME.