As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A C-CHECK IN MCN, THE FLOOR STRINGER AT FS 349 AFT OF THE PASSENGER DOOR WAS FOUND TO BE CORRODED BEYOND LIMITS. MAINTENANCE IS REMOVING AND REPLACING THE FLOOR STRINGER AT FS 349 AFT OF THE PASSENGER DOOR IAW ASA EO 600-53-0052. (M)