As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2321984) DURING INSPECTION FOUND CORROSION ON INTERCOSTAL BETWEEN STA500B-STA500C AND STGR25L-STGR26L, NOTED AFTER REMOVAL OF LH SIDE PLATE, FWD CARGO. INTERCOSTAL BETWEEN STA500B-STA500C AND STGR25L-STGR26L WAS REPLACED PER B737-800 SRM 51-40-05-0G AND DWG 147A7510 REV B.