As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE BL ZERO FLOOR BEAM OF THE WING CENTER SECTION IS CRACKED AT F.S. 663. NO CRACKS WERE FOUND IN THE WEB. THE CRACK IS TYPCAL PER BOEING SERVICE BULLETIN 737-57-1210. ER/A 304926-14 AUTHORIZES THE SERVICE BULLETIN REPAIR FOR THIS CONDITION.