As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE HEAVY CHECK FOUND THE CARGO DOOR SILL TO BE CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE CARGO DOOR SILL IAW EMBRAER SRM 51-40-02. THE CORROSION IS NOT A LEVEL 2, BUT WAS DENOTED AS A MAJOR REPAIR. THE AIRCRAFT WAS RETURNED TO SERVICE.