As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE BL 0.07 FLOORBEAM UPPER CAP OF THE WING CENTER SECTION IS CRACKED ALL THE WAY THROUGH THE CAP JUST FORWARD OF FS 664 AT A NUTPLATE HOLE. NO CRACKS WERE FOUND IN THE WEB. THE CRACK IS TYPICAL PER BOEING SERVICE BULLETIN 737-57-1210. THE ER/A WILL INSTALL THE SERVICE BULLETIN REPAIR FOR THIS CONDITION.