As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAT III AUTOLAND HAD TROUBLE TRACKING CENTERLINE FOR THE LAST 100" OF THE APPROACH. THE PLANE CROSSED THE THRESHOLD TO RIGHT OF CENTER LINE AND BANK BACK TO THE LEFT, LANDING 20' LEFT OF CENTER TRACKING 5 DEG LEFT OF CENTER LINE. GROUNDED - YES. ACCOMPLISHED DFCS FAULT REVIEW. NO A/P FAULTS. PERFORMED B737-800 FIM 22-11 TASK 825. SYS CKS NORMAL. ALL LLM TESTS PASSED.