Boulder Airport celebrates launch of unleaded aviation fuel
Aviation enthusiasts, local officials and community members gathered Friday at Boulder Municipal Airport to celebrate the arrival of unleaded aviation fuel, marking another step in the airport’s transition away from leaded gasoline.
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Boulder is the third airport in Colorado to offer UL94, an unleaded aviation fuel compatible with an estimated 70% of piston-engine aircraft. City officials hope the new fuel will reduce airborne lead emissions while encouraging a broader transition as more aircraft become compatible with unleaded alternatives.
Read: Boulder Airport begins transition away from toxic leaded fuel
UL94 can be used by an estimated 70% of piston-engine aircraft. At Boulder Municipal Airport, that includes about 100 fixed-wing aircraft. Of the 187 aircraft based at the airport, many remain unable to use the fuel until newer formulations become available. The fuel is stored in a leased skid-mounted tank that provides full-service fueling and is available to both Boulder-based pilots and visiting aircraft.
A state grant is subsidizing the cost of UL94 so it matches the price of leaded aviation fuel, encouraging pilots to make the switch. Boulder Airport is also offering rent credits for aircraft certified to use unleaded fuel.
“The progress in the last few months has been very swift,” said Assistant City Manager Pam Davis said, referring both to the pace of the project and advances by manufacturer Swift Fuels. “This will reduce airborne lead emissions, protecting the lives of those who work here and live around the airport.”
Andrew McKenna, president of the airport’s fixed-base operator, Journeys Aviation, said he expects an unleaded fuel compatible with all piston-engine aircraft to become available by the end of the year.
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“Unfortunately, these things take time but it’s coming,” he said.
McKenna said he also hopes to make airport operations more sustainable by eventually introducing battery-powered aircraft and expanding electric infrastructure.
David Ulane, director of aeronautics for the Colorado Department of Transportation, credited the collaboration among the city, the airport, Journeys Aviation and the state for bringing the fuel to Boulder. He said he expects the price of unleaded fuel to fall as adoption increases.
After remarks from speakers, officials held a ceremonial ribbon-cutting. McKenna then fueled one of Journeys Aviation’s aircraft and a tow plane from the Soaring Society of Boulder.
Several local officials attended, including state Sen. Judy Amabile, Boulder County Commissioner Ashley Stolzmann, and Boulder City Councilmembers Matt Benjamin and Rob Kaplan.
Airport staff said the first sales of the new fuel occurred later that morning. Journeys Aviation and the Soaring Society of Boulder have both committed to using UL94, and Boulder Airport Manager Eric Vences said those aircraft account for roughly half of operations at the airport.
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