As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR SUPPORT BEAM STATION 365, RBL 10", EVIDENCE OF CORROSION. REMOVED CORROSION AT FLOORBEAM FOUND OUT OF LIMITS IAW SRM 53-00-01 & 51-10-02. CUT UPPER T CAP FROM LBL 9" TO RBL 35" & INSTALLED FLOORBEAM UPPER CHORD IAW SRM 53-00-51 FIG 201.