As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING B INSPECTION FOUND THE RIGHT GUSSETT CORRODED AT FRAME 20. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE RIGHT GUSSETT AT FRAME 20 IAW SRM 51-40-02. LEVEL OF CORROSION UNKNOWN. THE AIRCRAFT WAS RETURNED TO SERVICE.