As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MECHANIC REMOVED THE AUXILIARY SEATING FLOOR OVERLAY PANEL AS PER AMC AAIP C1040 AND DISCOVERED TWO CRACKS ON THE AFT CABIN FLOOR PANEL. THE CRACKS STARTED AT THE LEADING EDGE OF THE FLOOR PANEL AND RADIATED AFT. THE DAMAGE IS AT STA 70" AND RIGHT BL 4.5". THE LT CRACK IS 1.5" IN LENGTH AND RT CRACK IS 1.25" IN LENGTH". THIS AIRCRAFT IS CURRENTLY OOS AT THE TIME OF THIS SUBMISSION WHILE THE DAMAGE IS REPAIRED.