As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CABIN FLOOR INTERCOSTAL STA 277-294 BL0 UPPER FLANGE IS CRACKED AT BOTH FLOOR BOARD HOLES / REMOVED AND REPLACED FORWARD CABIN FLOOR INTERCOSTAL STA 227 TO 294 BLO IAW B-737 SRM 51-40-02 AND DWG 141A5400 REV- ATAG WN6748 P/N141A5410-3