As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LONGITUDINAL FLOORBEAM BL 0 AT FRAME 15 CRACKED NEAR ATTACH POINT TO THE LATERAL FLOORBEAM. CRACK WAS DISCOVERED DURING TROUBLESHOOTING ANOTHER UNRELATED PROBLEM. REPAIR WAS ACCOMPLISHED PER EO 4225001-42-53-32. THIS PART WAS INSTALLED BY STC ST01189W1.