What was found
DURING A IMBV INSPECTION THE CARGO DOOR CUT OUT LOWER SILL WAS FOUND TO BE CORRODED. REMOVED CORRODED LOWER SILL. OBTAINED REPLACEMENT SILL. DRILLED, CLEANED, ALODINED AND PRIMED NEW SILL. INSTALLED NEW SILL IAW EMBRAER SRM (SRM 145/1142 REV 40)CHAPTER 51-20-03 AND 51-40-02. AIRCRAFT RETURNED TO SERVICE.