This is the first in a three-part series explaining how the next generation of unleaded aviation fuels may be authorized for use in specific engines and aircraft. This installment examines the Type Certificate (TC) and Supplemental Type Certificate (STC) processes,...

NASA’s Aviation Safety Reporting System (ASRS) has amended a report (December 2024 CALLBACK) that incorrectly attributed deterioration of cadmium-plated bolts in an aircraft’s fuel system to an approved aviation gasoline unleaded fuel, Swift Fuels’ UL94. It was later...

For more information on the transition to unleaded aviation fuel, visit: https://flyEAGLE.org The growing availability of unleaded aviation fuel represents a crucial step toward eliminating lead emissions from aircraft. However, it also introduces new misfueling risks...

The aviation community has long recognized the need to eliminate lead emissions from piston-engine aircraft, a goal set to be achieved by the end of 2030 through the leadership of the Eliminate Aviation Gasoline Lead Emissions (EAGLE) initiative. This ambitious...