Newton, Kansas – Butler National Corporation ($BUKS), a leading manufacturer and provider of support systems for commercial and military aircraft and a recognized provider of management services in diverse business groups including the gaming industry, announces the Avcon Industries, Inc. expands its Noise Suppression (hush kit) solution for Learjet XR Model 20 Series airplanes. Avcon STC No. ST01733WI now includes all model 24 and 25 series with all wing types, including the straight wing, Mark II, XR and Century III. The Avcon installation does not restrict the FAA certified Maximum Operating Altitude of 41,000, 45,000 or 51,000 feet.
