Instrument Flight

The first talking ATC in a sim? Jim Bailey, Yellow Springs, Ohio wrote and published a sim for CP/M back in 1987 called "Instrument Flight". "There was also an interpreter which you could create your own scripts for to provide ATC guidance. Not a canned script, but rather the ability to request vectors on the fly and get an intercept to the localizer or request the full approach on your own. It hollered at you if you were off your altitude!"