100R Unleaded Avgas receives ASTM International Approval of Production Specification
Posted on September 4th, 2025
West Lafayette, IN. On September 4, 2025, ASTM International published the final voting results approving Swift Fuels’ 100R unleaded avgas for an ASTM International Production Specification. This is the culmination of several years of dedicated research by the team from Swift Fuels working in collaboration with FAA and numerous OEMs from Lycoming, Continental Aerospace, Rotax, Textron Aviation, Piper, and others, plus testing laboratories and various aviation part suppliers. Members of the ASTM voting committees represent several hundred companies from around the world including major international oil companies plus fuel experts and representatives from military and civilian entities. This is the third time in 11 years that Swift Fuels has successfully navigated the ASTM process to be awarded an ASTM Production Specification for unleaded aviation gasoline.
Swift Fuels will continue the transition to unleaded avgas by rolling-out new sites to utilize their 100R Unleaded Avgas. As of today, 5 US flight schools utilize 100R as well as 5 flights schools in the EU (Germany, Belgium, Austria and The Netherlands). The company expects to rapidly expand the coverage of 100R at many more sites across the globe in the weeks and months ahead.
More information on the transition to unleaded avgas will be forthcoming soon.
To contact Swift Fuels for aviation gasoline, please go to www.swiftfuelsavgas.com
or call +1 (765) 464-8336
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Swift Fuels, LLC is the global leader in the advancement of premium Unleaded Avgas to eradicate toxic lead emissions from piston aircraft using 100LL over the last 7 decades. Swift Fuels is the only producer of unleaded avgas in the US market with both FAA-approved certifications for engines and airframes and ASTM International compliant fuel standards. Swift Fuels has sold over 4.5 million gallons of unleaded avgas in the past several years, which serves to reinforce the commercial readiness of our fuels with our market stakeholders. Many more locations globally will be joining this transition to Swift Fuels 100R Unleaded Avgas soon.