As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** NOTED ON AFT CABIN FLOOR WEB ASSEMBLY (BS 1020 / RBL 15 / WL 207.5). / CORROSION ON AFT CABIN FLOOR WEB ASSEMBLY AT BS 1020; RBK 15 WL 207.5 WAS REMOVED; INSPECTED AND REPAIRED IAW 1-753-32831 REV IR AND ER 18-02960 REV IR