What was found
TYS, DURING A SCHEDULED INSPECTION THE SERVICE DOOR AFT. SILL WAS FOUND CORRODED. MAINTENANCE BLENDED THE DAMAGED AREA, ALODINED, PRIMED AND FILLED WITH HYSOL 9394, FABRICATED AND INSTALLED A DOUBLER. IAW EMB-GST-1927/02A, THE REPAIR WAS SATISFACTORY AND THE AIRCRAFT WILL BE RELEASED UPON COMPLECTION OF THE INSPECTION.