As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRACK ON INTERCOSTAL LOCATED AT BS 540 BETWEEN BL 0 TO LBL 24.75 FLOOR CABIN STRUCTURE. REPLACED INTERCOSTAL LOCATED AT BS 540 BETWEEN BL 0 TO LBL 24.75 FLOOR CABIN STRUCTURE IAW SRM B737-300 51-10-02 ITEM 8 PAGE 8, 51-40-02 AND DRAWING 65-468.