As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION, THE FLOOR WEB AT THE FORWARD CARGO DOOR ENTRANCE AT FRAME 13 TO 17 WAS FOUND CORRODED BEYOND LIMITS. MAINTENANCE REMOVED AND REPLACED THE CORRODED FLOOR WEB IAW SRM 533780 AND 512500. AIRCRAFT WAS RELEASED FROM C-CHECK ON MAY 14, 2004.