What was found
CAT III AUTOLAND UN OR NOT SUCCESSFUL, TRACK WAS FINE UNTIL 100AGL, BELOW 100FT AIRPLANE DRIFTED TO THE RIGHT THEN SEEMED TO OVERCORRECT TO THE LEFT, OUTSIDE THE LIMITS. I DISCONNECTED THE AUTOMATION AND LANDED THE AIRCRAFT. GROUNDED - YES. PERFORMED BITE OF DFCS, NO FAULTS NOTED LAST FLIGHT. LAST FLIGHT LEG ON HGS SHOWS "ILS ANOMALY DETECT" AND XTK RATE EXCEED". LAND VERIFY TEST NML, REF FIM 22-11 TASK 801.