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 10 INCH CRACK WAS FOUND IN FLOOR PANEL 261PF. MAINTENANCE REMOVED CRACKED FLOOR PANEL BETWEEN FR 68 AND FR 70, Y1700 LT TO Y1700 RT; FABRICATED A NEW REPLACEMENT FLOOR PANEL PER DWG D53670051; INSTALLED REPAIR PART IAW A320 SRM 53-02-00 FIG 209.