As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE STIFFENER BETWEEN THE LEFT BEAM AND PASSENGER DOOR FRAME 17-18 TO BE CORRODED. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED STIFFENER BETWEEN LT BEAM AND THE PASSENGER DOOR AT FRAME 17-18 IAW SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.