As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN FLOOR SUPPORT INTERCOSTAL AT STA 500D TO STA 520 BL0; UPPER FLANGE IS CRACKED / REMOVED PASSENGER CABIN FLOOR SUPPORT INTERCOSTAL AT STA 500D TO STA 520 BL0 UPPER FLANGE IAW SRM 51-40-02-0G-0 FABRICATED PN # 143A5410-11 ON SHOP TRAVELER WO#39269-2400-0004. INSTALLED UPPER FLANGE SUPPORT INTERCOSTAL ANGLE IAW SRM 51-40-02-0G-0 AND BOEING DWG#143A5400 REV-.