FSX Fokker D-23 Updated. The Fokker D.XXIII was a Dutch single-seat fighter designed and built in 1939. The prototype first flew in May 1939 but the trial flights identified problems with the cooling of the rear engine and general engine performance. In May 1940 the program was abandoned when the German forces invaded the Netherlands. This is the FS2002/2004 model by Kazunori Ito, updated for FSX by Hertzie. The package includes the prototype as well as several "what if" repaints by different designers. It also features a newly designed virtual cockpit and a matching 2D panel. Exhaust smoke added. The model may work in FS2004 and P3D, Version 3. Thanks to Kazunori ito for the original model and to Hertzie for the FSX update. New panels and smoke by Michael Pook.