Lehpron: looks like AutoCAD, R14 maybe? I have drawn a couple planes in AutoCAD 2000/2002, but Inventor 4/5 is really nice.
CleCo: if you're looking for some nice screen capture software, try Snag-it. It allows you to not only take single shots, but also capture movies of anything. In Lehpron's drawing above, he could have put the program into a 3D orbit which just spins the drawing, then he could have used Snag-it to record a full 360° animation of it.
Work Hard. Fly Right. Continental Airlines