As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK ,CORROSION ON FLOORBOARD SUPPORT CHANNELS UNDER FLOOR PANEL 122EZ. MX BLENDED OUT CORROSION ON SUPPORT CHANNELS ON PNLS 122EZAND 122DE. MIDDLE AND AFT CHANNELS OUT OF LIMITS. FWD CHANNEL WITHIN LIMITS. CHANNELS WERE REPLACED ON WO 19645 TASK 1559.