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 LAVATORY RIGHT GUSSET BEAM CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED THE CORRODED RIGHT GUSSET BEAM, PREPPED AND INSTALLED SERVICEABLE GUSSET I IAW EMB SRM 51-40-02 AND EMB SRM 51-20-03. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.