As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLATBED MOD, MAIN DECK ZONE B, STA 760 TO 740, LBL 65, EDGE CRACK FOUND ON INTERCOSTAL DURING OPENING OF FLOORBOARD. CRACKED INTERCOSTAL AT MAIN DECK ZONE B STA 740 TO 760 LBL 65 AREA REMOVED AS PER B747-400 SRM 51-40-02 NEW INTERCOSTAL FABRICATED AS PER BOEING DWG 140U5497 REV D AND INSTALLED AS PER PER B747-400 SRM 51-40-02.