As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FLOORPANEL INSERTS 221BF / DAMAGE FOUND ON UPPER AND LOWER SKINS OF FLOOR PANEL 221BF AT INSERT LOCATION P45; AND ALL CORRODED INSERTS; WERE REPLACED IAW SRM 53-00-50-2R-1; SRM 53-00-50-2R-2; AND DWG 141A5810-56 56563U 26JUN17