Held at Casa Grande, AZ. Copperstate fly-in is centered around homebuilt aircraft, but quite a few antiques and later model airplanes show up. They mix the airplanes together in parking and will not group all of a type together. They do have quite a few forums, presentations, vendor areas (Aircraft Spruce, etc.) and homebuilt / LSA aircraft manufacturers, dealers, and kit suppliers show up. For 2009, I was there on October 23 and 24. This was the first time I was able to fly my own Sonex to the show. I flew it up and back, both days.