As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE "C4/A4 CHECK" WHILE COMPLYING WITH SB 747-53A2459 REV 1, CRACK DAMAGE WAS DETECTED AT LBL 68 IN 65B10927-45 FLOORBEAM WEB. REPAIRED CRACK DAMAGED FLOORBEAM WEB IAW SB 747-53A2459 REV 1, DWG 141U0044 SHEET 2 VIEW 1C11 AND EO RS R-53-25-37120 REV A.