There's a remake of Kennedy Approach available here. I used to play it a lot with a friend on an Atari 800XL.

Kennedy Approach is (or was) an ATC simulation game that first appeared on the C64 back in the eighties. It was the first game to use a speech engine (computer generated voice) which was quite an achievement for a 64kb game. It was probably the first ever realtime strategy game (RTS).