As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH- DURING C-CHECK INSPECTION IT WAS NOTED THAT THE CENTER FLOORBEAM GUSSET WAS CORRODED BETWEEN FRAMES 58 AND 60. MAINTENANCE REMOVED AND REPLACED THE CENTER FLOORBEAM GUSSET AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE, UPON RELEASE FROM C-CHECK.