FSX Northrop F-20B Tigershark. This is an update for FSX of the DSB F-20B. The original file said it was the Iris aircraft, but everything inside the file says it is DSB. Includes all the updating for this model that was done for the F-20A model that it came with. The A and B models have been separated to have smaller files. This the whole aircraft. This will work in FS2004, but not up to specifications. The virtual cockpit is there but not usable due to a grey section over the front view. By Bob Chicilo.