Washington, DC, September 4, 2025 – NATA (the National Air Transportation Association) congratulates Swift Fuels on its announcement of approval of an ASTM International production specification for Swift Fuels’ 100R unleaded avgas. ASTM International approval represents a significant milestone reflecting years of collaboration between Swift Fuels, the Federal Aviation Administration, leading OEMs including Lycoming, Continental Aerospace, Rotax, Textron Aviation, Piper, and others, as well as international testing laboratories and suppliers. The rigorous ASTM process, supported by experts from stakeholders across all facets of the aviation industry, confirms that a fuel meets the highest global standards for safety and performance. Visit NATA’s unleaded aviation fuel advocacy page for additional information and resources (www.nata.aero).