As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO BAY FLOORBEAM TEE AT BS 772 HAS EVIDENCE OF CORROSION ON TOP AND BOTTOM SURFACE. ACFT GROUNDED. REMOVED THE CORROSION IAW SRM 51-10-02 AND FOUND TO BE OUT OF LIMIITS IAW SRM 53-00-53, REPLACED IAW SRM 51-40-02 & DWG 146A7500 REV B.