As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK A 6 INCH CRACK WAS FOUND IN FLOOR PANEL 221AF. MAINTENANCE REMOVED CRACKED FLOOR PANEL FROM FS 12 TO FS 16 AND -Y81 TO -Y512; FABRICATED A NEW REPLACEMENT FLOOR PANEL PER DWG B5D53610125AND A320 SRM 53-02-00, FIG. 209.