As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER FUSELAGE FLOOR BS 616 & BS 639 AT RBL 65 SIDE RAIL CRACKED. DURING INSPECTION, CRACKS WERE NOTED AT THE CREASE BEAM INNER CHORD. THIS CHORD ALSO SUPPORTS THE FLOORBOARD EDGES. THE 62" SECTION OF CHORD WAS REPLACED IAW DWG 65-48973 AND SRM R108.