Swift Fuels’ 100R Receives ASTM Production Approval: A Key Step Toward Safe Unleaded Avgas Transition

Back NATA News / September 9, 2025

Last week NATA congratulated Swift Fuels on its announcement of approval of an ASTM International production specification for Swift’s 100R unleaded avgas. ASTM International approval represents a significant milestone reflecting years of collaboration between Swift Fuels, the FAA, 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.

“The approval of 100R for an ASTM International production specification represents another significant step in the transition to unleaded aviation fuel, while strengthening our industry’s commitment to safety,” said NATA President and CEO Curt Castagna. “NATA applauds the leadership and dedication of Swift Fuels and all who contributed to this milestone achievement.”