As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE REMOVING FLOOR PANEL AT 5L FOR ACCESS TO SEAT TRACK A CRACK WAS FOUND ON THE AFT SIDE OF THE FLOOR PANEL MPN: R532B3709.00000 FABRICATED NEW FLOORBOARD (PNL# R532B3709.00000.) AT 5L BETWEEN FR42-STA. 2718 -FR43- STA. 2771, IN REF TO FEDEX DRW# SRZ-25-005 AND AIRBUS 300-600 SRM: 53-10-20 PARA 6A-10. THIS A MAJOR REPAIR. INSTALLTION OF FLOORBOARD WILL BE ACCOMPLISHED ON NR# 003, WO# 89161.