CGS Aviation, Inc. is an American aircraft manufacturer based in Grand Bay, Alabama. The company was founded by Chuck Slusarczyk in the early 1970s in Broadview Heights, Ohio as Chuck's Glider Supplies. Today it is run by Danny Dezauche and specializes in the design and manufacture of ultralight aircraft in the form of kits for amateur construction and ready-to-fly aircraft in the US FAR 103 Ultralight Vehicles rules category.