As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO THRESHOLD CORRODED MARKED IN RED. GROUNDED - YES. BLENDED AWAY CORROSION ORIG. THICKNESS .056, MAT LOSS .036 NEW THICKNESS .020 WEB OUT OF LIMITS PER B737-900 SRM 53-60-15. LOCATED AND DRILLED NEW WEB P#146A8173-25 PER B737-900 SRM 51-40-05. INSTALLED NEW WEB PER B737-900 SRM 51-40-02 REF BOEING DWG 146A8340 REV.-PO#1145450.1.