As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTION IT WAS NOTED THAT THE FUSELAGE UPPER LOBE WING CENTER SECTION OVERWING FLOORBEAM IS CRACKED UNDER SEAT TRACK SECTION BS 760.9 RBL 24.75. CRACKED FLOORBEAM WAS REMOVED AND REPLACED WITH NEW CHORD FROM BS 760.9. NO OTHER DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.