As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN CENTERLINE FLOORBEAM BS 706-716 BL 0 VERTICAL WEB HAS SEVERAL CRACKS MIGRATING UP AND FORWARD FROM FASTENERS. CUT OUT DAMAGED WEB IAW SB 737-57-1210, FABRICATED DOUBLER AND WEB FRM (7075-T6 .040 QQA 250/12 R702259 AND 7075-T6 .050 QQA 250/12 R702260) IAW SB 737-57-1210, INSTALLED PER ER 2-53-13-21.