As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAILED AUTOLAND APPROACH WARNING ON FLARE (NO AIII) RUNWAY 34L. GROUNDED - YES. DFCS FAULT HISTORY SHOWS NO DEFECTS. ACCOMPLISHED DFCS LAND VERIFY TEST (GP 49) REF B737-900 AMM 22-11-00/201 & HGS SYSTEM TEST REF HGS MODEL 4000 SYSTEM SMM 34-36-00, OPS CK NML.