Description This Butler is at the service of aircraft operators. Butler National's Avcon subsidiary (over half of sales) provides aircraft modification services, including the conversion of passenger planes to freighters. The company works mainly on Learjet models; it also modifies Beechcraft, Cessna, and Dassault Falcon aircraft. It adds aerial photography capability to aircraft and offers stability enhancements. The company's avionics unit makes airborne electronic switching components. Other Butler National businesses provide remote water and wastewater monitoring (SCADA Systems) and architectural services (BCS Design), as well as gaming management services to Indian tribes (Butler National Service Corporation; BNSC).