An unleaded aviation fuel developed by Swift Enterprises Ltd. has been approved as a test fuel by ASTM International, one of the world’s largest voluntary standards development organizations.
Swift Enterprises, based at the Purdue Research Park of West Lafayette, uses biomass and other renewable feedstocks to make 100SF. The fuel is designed to be a drop-in replacement for 100LL.
“With this approval, we can begin full-scale testing with industry stakeholders,” said Mary Rusek, president and co-owner of Swift Enterprises.
The test program will be coordinated in association with the FAA and original equipment manufacturers. Extensive testing of aircraft fuel systems, engines and materials compatibility must be conducted before 100SF can be fully certified as an airworthy fuel, according to company executives.
For more information: SwiftEnterprises.com

As an FBO owner/operator facing rising costs of fuel around every corner, I am very pleased to see progress being made on this front. Hope the testing goes well, and 100SF receives a blessing quickly. The sooner we can start serving this on the flight-line, the better we ALL will be. General Aviation can’t afford a $200 hamburger, hopefully this will keep the $100 hamburger alive and well.
I’m sure you will, but PLEASE keep us posted.