As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN WING CENTER SECTION FLOOR SUPPORT INNER CHORD CORRODED FROM STA 639-5' TO STA 639+8' RBL 64 . REMOVED AND REPLACED FLOOR SUPPORT INNER CHORD AT STA 639 -5 TO 639 +8 RBL 64 IN MAIN CABIN CENTER SECTION IAW SRM 51-40-02-0G-0 AND DWG 144A5901.