As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE NON ROUTINE CO51286. DURING C3 C CHECK, INSPECTION NOTED FLOOR PANEL 262FF HAD CORROSION ON AFT BOTTOM SURFACE. MX REMOVED FLOOR PANEL AND INSTALLED NEW IN ACCORDANCE WITH THE REQUIREMENTS OF A319 AMM 53-42-12-400-002. UPON COMPLETION OF THE REPAIR, IT WAS INSPECTED AND FOUND ACCEPTABLE.