As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 1013393) DURING INSPECTION FOUND CRACK STIFFENER FLOOR STRUCTURE AT LEVEL BS 540 AND BTW BL 0 TO LBL 24.5 AT PASSENGER CABIN. REPLACED STIFFENER AND FASTENER LOC. BS 540 AND BTW B/O TO LBL 24.5 AT PASSENGER CABIN AS PER B737-800 SRM 51-40-02,51-10-02 ITEM 9 AND DWG #143A0060 REV. A.