As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C1-3 AFT MAIN CABIN FS 1742 LONG 17L CRACKED IN RADIUS LWR INBOARDD FLANGE. REMOVED LONGERON SECTION AT STA 1745-1734 IAW SRM 53-02-02-0 FIG 10. FABRICATED AND INSTALLED LONGERON SPLICE SECTION AT STA 1745-1734 L17L IAW DWG DC8-53B-009, AND SRM 53-02-02-0 FIG 10, AND SRM 53-05-03.