What was found
DURING A MBV INSPECTION, THE BAGGAGE DOOR CUT OUT LOWER SILL WAS FOUND CORRODED. REMOVED THE EXISTING SILL TO REMOVE THE DAMAGED AND CLEANED THE AREA. POSITIONED NEW SILL, MARK AND DRILLED FASTENERS HOLES. TREATED PART AND INSTALLED. REPAIR DONE IAW EMBRAER 145 SRM, EMB-145/1142 REV 39, CHAPTER 51-40-02. AIRCRAFT RETURNED TO SERVICE.