Ooh, are you by any chance the "J Calhoun" who made Glider? If so, thank you for making such an awesome game that is such a strong memory of mine from those days! :) If not, well, you share the last name and first initial of a legendary (IMO) Mac game developer! haha
That's funny because the first playing around with a paper-airplane-floating-on-a-column-of-air I did was on a Commodore 64 using character graphics (that I hand-edited to look more like a paper airplane and floor vent).
When I got a Mac Plus and figured out how to draw sprites, I recalled that little Commodore exploration I had done years earlier.