As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 1219712) DURING INSPECTION FOUND CRACK ON INTERCOSTAL FROM STATION 344 TO STATION 360 BTW BL 0 AT PAX CABIN. INTERCOSTAL FROM STA 344 TO STA 360 BTW BL0 WAS REPLACED PER B737-800 SRM 53-10-51 IDENTIFICATION 2 FIG 4, SRM 51-40-02 PAR 7 AND DWG 141A5410 REV. B.