AVCON RECEIVES FAA SUPPLEMENTAL TYPE CERTIFICATES FOR SPECIAL MISSION BOMBARDIER CHALLENGER 604, 605, AND 650 PLATFORMS

Two new STCs expand The Avcon Special Mission Platforms to include Challenger Aircraft NEW CENTURY, Kan., June 9, 2026 /PRNewswire/ -- Avcon Industries, Inc., a subsidiary of Butler National Corporation (OTCQX: BUKS) and leading aerospace manufacturer and systems integrator specializing...