As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LOWER CARGO FWD BILGE THE RT INTERCOSTAL BETWEEN STATION 1153 & 1175 IS CORRODED AT THE BACK CORNER. R & R INTERCOSTAL IN AFT LOWER CARGO BETWEEN STATION 1153 & 1175 IN FWD BILGE ON RT SIDE. CORRODED LEVEL 2, PN 146T5000-58, SN NSN, FS & BS LOCATION FROM STATION 1153 TO STATION 1175, STRINGER & WS LOCATION FROM RBL 18 TO RBL 18. ACFT WAS GNDED.