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 LOWER FLOORBEAM SPLICE AT BS 640 STR 17L WAS CRACKED. SPLICE PLATE WAS REMOVED AND NEW SPLICE PLATE WAS FABRICATED FROM 2024 T3 .125 DIM 18 X 9 INCHES. INSTALLED NEW SPLICE PLATE, NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.