As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AFT CARGO BAY INTERCOSTAL BS767+10 S-27R WL150<[01] CORROSION ON AFT CARGO BAY INTERCOSTAL BS 767+10? S-27R WL150 FOUND TO BE OUT OF LIMITS. REMOVED; REPLACED AND INSTALLED NEW INTERCOSTAL AT BS 767 TO 787 STR 27R WL 150 PER 53-00-04-1A-1; SRM 51-40-02-0G-0; SRM 51-40-05-0G-0 AND DWG 146A8130.;[02] VERIFIED CORRECTIVE ACTION 1