As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO BAY BS 1520-1540 BETWEEN STRINGERS 28 - 29R, BILGE INTERCOSTAL HAS CORROSION ON LOWER FLANGE. REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS. REMOVED DAMAGED INTERCOSTAL, FABRICATED REPAIR AND INSTALLED NEW INTERCOSTAL IAW SRM.