Oshkosh Area (KOSH), Wittman Regl (WI).
FSX Oshkosh Area (KOSH), Wittman Regl (WI). Wittman Regl. Airport (KOSH) is the busiest airport in the world one week out of each year during the airshow which is held at the end of July and beginning of August on most years. This is my home area, and although this is not necessarily accurate it is designed to simply add eye candy to the area. I have built up a few of the surrounding airports that I use for my touch and go’s. These airports are, Pioneer Airport, Fun Air, Vette/Blust, Cortney Plummer, Skydive, and Brennand. By Roy Perkins