As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION LEVEL 3 CORROSION WAS FOUND ON THE CABIN FLOOR STRUCTURE CENTER FUSELAGE I MIDDLE BEAM BETWEEN FRAME 17 AND 25. THE CABIN FLOOR STRUCTURE CENTER FUSELAGE I MIDDLE BEAM BETWEEN FRAME 17 AND 25 WAS REPLACED, THE NEW PART WAS INSTALLED WITH A SOLID RIVET IAW SRM 51-40-02.