As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN FLOOR FWD GALLEY INTERCOSTAL FROM STA 332 TO 345 RBL2 HAS CORROSION ON UPPER SURFACE IN 4 AREAS. MAJOR REPAIR ACCOMPLISHED: REMOVED AND REPLACED INTERCOSTAL P/N 141N5161U39 AT STA 324 TO 345 RBL, IAW SRM 51-40-02 & BOEING DWG 141N5160.