As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO BAY INTERCOSTAL BETWEEN BS 787 DOOR CUTOUT FWD FRAME, BELOW FLOOR SUPPORT SHIELD HAS CORROSION. INSTALLED NEW INTERCOSTAL UNDER SHIELD AT AFT CARGO COMPT INTERCOSTAL DOOR CUT OUT FLOOR SUPPORT SHIELD STA 787 PER REF SRM 51-40-02-0G-0 AND DWG146A0081.