Swift Fuels has secured ASTM International approval for its 100R unleaded aviation gasoline, a move industry leaders describe as a key milestone in the transition away from leaded avgas.

ASTM is a standards organization that sets safety, quality and performance specifications for fuels and other products. Approval by the organization helps to provide the FAA and other entities a recognized benchmark against which to certify new fuels for use in aircraft.

Indiana-based Swift announced this week that ASTM issued a global production specification for 100R, clearing the way for FAA action to expand its Approved Model List beyond Cessna 172R and 172S models with Lycoming IO-360-L2A engines.

“This is the culmination of several years of dedicated research by the team from Swift Fuels working i

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