As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING SCHEDULED MAINTENANCE A CARGO FLOOR STRUCTURAL I-BEAM ON THE LH SIDE, AT FS1000-FS1031 WAS FOUND TO HAVE LEVEL TWO CORROSION, WITH A HOLE CORRODED COMPLETELY THROUGH THE BEAM AT ONE LOCATION. THE BEAM SECTION TO BE REPLACED IAW APPROVED REPAIR DATA FROM THE MANUFACTURER. (TC# 20190531002)