As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, THE CENTER FUSELAGE IV FLOOR STRUCTURE RIGHT OMEGA BEAM WAS FOUND TO BE CRACKED AND CORRODED AROUND ANCHOR NUT BETWEEN FRAME 59 AND FRAME 60. THE RIGHT OMEGA BEAM ON THE CENTER FUSELAGE IV FLOOR STRUCTURE WAS REPLACED AND INSTALLED WITH A SOLID RIVET IN ACCORDANCE WITH SRM 51-40-02.