As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0561971) ACB, CORRODED SHIELD FWD OF AFT CARGO DOOR CUTOUT. REMOVED CORRODED SHIELD DUE TO EXCESSIVE DAMAGE AND REPLACED BY NEW ONE ON FWD SIDE AT AFT CARGO DOOR BTW STA 767 TO 787 + "6", RBL 21 IAW B737 SRM 51-40-02-0G AND DWG 146A0081 REV A.