Avcon Receives Faa Stc for Honeywell Aerospace Replacement Egpws on Bombardier and Learjet Aircraft

FAA approval enables immediate MKV-A EGPWS upgrades for key Learjet and Bombardier models.

What the company is saying

Butler National Corporation, via its subsidiary Avcon Industries, Inc., is announcing that the FAA has granted Supplemental Type Certificate (STC) approval for installing the Honeywell Aerospace MKV-A Enhanced Ground Proximity Warning System (EGPWS) as a direct replacement for the phased-out Mark V system. The company frames this as a regulatory and technical milestone, emphasizing that the MKV-A is available as a drop-in replacement using existing avionics racks to minimize installation effort. The announcement highlights that all equipment for the upgrade is expected to be sourced from Honeywell Aerospace and that the computers are available for shipment. Avcon is also pursuing regulatory validation from Transport Canada, EASA, and the UK Civil Aviation Authority to expand the approval's reach. President Marcus Abendroth is quoted to reinforce Avcon's commitment to supporting customers facing obsolescence and to acknowledge Honeywell's cooperation in achieving the STC. The tone is confident and operational, focusing on regulatory compliance and product readiness rather than financial projections.

What the data suggests

The FAA has issued Avcon AML STC No. ST12439CH, authorizing the replacement of Honeywell Mark V EGPWS computers with MKV-A units in Learjet Models 40, 45, 60 and Bombardier Models CL-600-1A11 (600), CL-600-2A12 (601), CL-600-2B16 (601-3A Variant), CL-600-2B16 (601-3R Variant), CL-600-2B16 (604 Variant), BD-700-1A10, and BD-700-1A11. The FAA's 2000 mandate requires EGPWS or TAWS on turbine-powered airplanes with six or more passenger seats, making this upgrade necessary for regulatory compliance in these aircraft. The MKV-A computers are available for shipment, and installation leverages existing racks to reduce downtime and complexity. No financial figures, order volumes, or revenue impacts are disclosed, so the commercial scale and adoption rate remain unclear. The company is actively seeking further regulatory approvals in Canada, the EU, and the UK, but those are not yet secured. The technical claims about enhanced safety, database resolution, and GPS resilience are qualitative and not supported by quantitative evidence in this release.

Analysis

The announcement's tone is positive but proportionate to the actual milestone achieved: FAA STC approval for the MKV-A EGPWS installation is a concrete, realised regulatory event, and the product is now available for shipment. Most key claims are factual and supported by regulatory references and product availability. Forward-looking statements are limited to anticipated equipment sourcing from Honeywell and pending international regulatory approvals, but these are clearly identified as future steps rather than presented as completed. There is no evidence of exaggerated language or narrative inflation; the benefits and next steps are described factually. No large capital outlay or long-dated, uncertain returns are discussed, and the execution distance for the realised milestone is immediate. The absence of financial data limits the signal to weak_positive, but the disclosure is otherwise balanced and specific.

Risk flags

• ●The absence of disclosed order volumes, revenue projections, or customer commitments means the financial impact of the STC approval is uncertain, limiting visibility into commercial traction.
• ●Pending regulatory approvals from Transport Canada, EASA, and the UK Civil Aviation Authority introduce execution risk for international adoption; delays or denials could restrict the addressable market.
• ●All equipment for the modification is anticipated to be sourced from Honeywell Aerospace, creating potential supply chain dependency and concentration risk if Honeywell experiences production or delivery issues.

Bottom line

FAA STC approval for the MKV-A EGPWS positions Butler National Corporation and Avcon to address regulatory-driven replacement demand in specific Learjet and Bombardier aircraft immediately within the US. The announcement is operationally credible, with regulatory and technical details clearly spelled out, but lacks any financial data or evidence of market uptake. The commercial impact will depend on both the pace of customer adoption and the outcome of pending regulatory validations in Canada, the EU, and the UK. Investors should focus on future disclosures of sales figures, order backlogs, or customer contracts to gauge the real business impact. The most material takeaway is that the technical and regulatory groundwork is complete for US installations, but the scale of financial benefit remains to be demonstrated.

Announcement summary

(OTCQX:BUKS) Butler National Corporation, through its subsidiary Avcon Industries, Inc., announces that the Federal Aviation Administration (FAA) has granted Supplemental Type Certificate (STC) approval for the installation of the Honeywell Aerospace MKV-A Enhanced Ground Proximity Warning System (EGPWS). The MKV-A is intended as a drop-in replacement for the Honeywell Mark V EGPWS, which Honeywell Aerospace is phasing out. The MKV-A offers higher resolution databases, enhanced safety and situational awareness, and improved resilience to GPS jamming and spoofing. All equipment for the modification is anticipated to be sourced from Honeywell Aerospace. MKV-A EGPWS computers are now available for shipment. STC licensing and FAA STC information can be obtained from Avcon. The FAA issued Avcon the Approved Models List (AML) STC No. ST12439CH, which authorizes replacement of the Honeywell MKV EGPWS computer with the MKV-A computer in Learjet Models 40/45 and 60, and Bombardier Models CL-600-1A11 (600), CL-600-2A12 (601), CL-600-2B16 (601-3A Variant), CL-600-2B16 (601-3R Variant), CL-600-2B16 (604 Variant), BD-700-1A10, and BD-700-1A11. The installation uses existing avionics racks and is designed to minimize installation effort. In 2000, the FAA mandated EGPWS or Terrain Awareness and Warning Systems (TAWS) equipment on turbine-powered airplanes configured for six or more passenger seats. FAA regulations require all Bombardier and Learjet airplanes, except certain Model 23/24 airframes, to have a TAWS or EGPWS system installed. Avcon is in the process of applying for Transport Canada (TC), European Union Aviation Safety Agency (EASA), and United Kingdom Civil Aviation Authority (CAA) validation or approval of the FAA STC. Marcus Abendroth, President of Avcon, stated that Avcon is committed to supporting customers with FAA-approved solutions to obsolescence and appreciates the cooperation with Honeywell Aerospace in achieving the STC. He noted that the MKV-A replacement is designed to minimize replacement effort and that operators may accomplish the modification at Avcon's New Century, Kansas facility or at their own qualified avionics modification center.

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