As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 250' ON AN ACTUAL CAT3 APPROACH GOT RED AUTOLAND FLASHING LIGHT ALL PARAMETERS APPEARED NORMAL. EXECUTED A GO AROUND. PERFORMED A FAULT ISOLATION PROCEDURE AND A AFS LAND TEST PER AMM 22-42-00-0. NO FAULTS WERE RECORDED ON DISPLAY OR TRIFOLD FAILURE RECORD INDICATOR. AFS LAND TEST PASSED WITH NO FAULTS.