As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER FUSELAGE, PAX CABIN OVER FLOOR LEVEL, FROM STA7087/FR16 TO STA8077/FR20, BETWEEN -Y1219 AND -Y1600 FLOOR PANEL 222FF WITH CORROSION AT SEVERAL PLACES. DAMAGED FLOOR PANEL WAS REPLACED IAW SRM REQUIREMENTS UNDER THE NON ROUTINE ITEM.