The Eliminate Aviation Gasoline Lead Emissions (EAGLE) Initiative has added new information, metrics, and reference documents to the flyEAGLE.org website to facilitate deeper understanding of the development, testing, and progress of high-octane, unleaded aviation fuels. The Piston Aviation Fuels Initiative (PAFI) Interactive Toolkit has been updated to include information and metrics about both UL100 from VP Racing/LyondellBasell and 100R from Swift Fuels. Both companies are currently in the PAFI program. The PAFI toolkit offers up-to-date PAFI test status for the individual fuels, as well as reports on completed materials compatibility testing carried out by industry partners.
For those interested in a deeper dive into the history of unleaded aviation gasoline, the PAFI Interactive Toolkit now includes reference documents from a wide variety of sources in one easy-to-navigate location. You can find historical research documents such as nearly 20 technical reports produced by the Federal Aviation Administration (FAA) William J. Hughes Technical Center for Advanced Aerospace from 1980-2015, demonstrating the significant testing and research carried out in search of high-octane unleaded aviation gasoline (avgas). You can explore technical reports published by the Coordinating Research Council (CRC) between 2010-2026 also showing related research, investigations, and survey results. In addition, you can browse through the foundational EAGLE documents from the FAA, Environmental Protection Agency (EPA), and National Academies of Sciences, Engineering, and Medicine (NASEM), representing nearly 15 years of findings and recommendations. Also new to the website are the toolkit enhancements including the full PAFI test plan index, as well as unleaded fuel guidance published by original equipment manufacturers (OEMs).
EAGLE is a comprehensive government-industry initiative working to eliminate the use of leaded aviation fuels for piston-engine aircraft in the United States without adversely impacting the safe and efficient operation of the existing general aviation fleet. Learn more at flyEAGLE.org.