"Chuck Yeager's Air Combat" on an AST 486DX2-66 w/ 16Mb of RAM, Windows 3.1 machine, played in DOS mode, using the CH Products Flightstick (only 2 buttons -what was I thinking?). Gave the machine to my brother last year, but still have the game in my cd-library and the joystick in the garage as an emegency backup in case my CH Combatstick dies (which it hasn't after 3 years of front-line combat tours

). Nobody has yet duplicated that sim - combined WW2, Korea, and Vietnam all in one game!
My first dedicated jet sim was F-117A by Microprose, followed by USNF by Electronic Arts, all played on that same AST desktop PC with the CH Flightstick. I didn't upgrade machines and joysticks until I got into Air Warrior on AOL in 1996.