FAA Approval of Non-Halon Replacement Portable Fire Extinguisher OLATHE, KANSAS, August 21, 2025 – Avcon Industries, Inc. and its affiliate Butler Avionics Inc., subsidiaries of Butler National Corporation (OTCQX: BUKS), leading manufacturers and systems integrators for special mission aircraft modifications, announce Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) approval for the installation of non-halon […] The post Avcon Industries Acquires STC-Approved Inst...
