What was found
AUTOLAND NOT SUCCESSFUL: SEA RWY 16R WINDS 110@10 KNOTS WITH RUNWAY. ALL OPS NORMAL BUT AIRCRAFT DRIFTED LEFT OF CENTER PAST THRESHOLD AND TOUCHDOWN WAS 40FEET OF CENTER LINE ON UPWING SIDE OF RWY. GROUNDED - YES. PERFORMED B737-9 IFIM 22-11-00-810-D63 AIRPLANE DOES NOT ALIGN CORRECTLY WITH RUNWAY DURING APPROACH. ACCOMPLISHED LAND VERIFY TEST SUCCESSFULLY REF B737-9 AMM 22-11-00-700-801. PERFORMED GOOD HGS SYSTEM TEST. REF AMM HGS 6000 34-36-00.