Butler National Corp. engages in aerospace business services. It operates through the following business segments: Professional Services and Aerospace Products. The Professional Services segment includes professional management services in the gaming industry; and professional architectural engineering, and management support services. The Aerospace Products segment focuses on the Aircraft Modifications, which includes the modification of customer and company owned business-size aircraft from passenger to freighter configuration, addition of radar systems, aerial photography capabilities, and stability enhancing modifications for Learjet, Beechcraft, Cessna, and Dassault Falcon aircraft along with other specialized modifications; and Avionicsm, which includes the manufacture, sale, and service of electronic equipment and systems. The company was founded in 1960 and is headquartered in Olathe, KS.