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General aviation associations welcome GAMI’s unleaded aviation fuel STC
EAA AVIATION CENTER, OSHKOSH, Wisconsin — (July 27, 2021) — The Aircraft Owners & Pilots Association (AOPA), Experimental Aircraft Association (EAA), and General Aviation Manufacturers Association (GAMA) congratulate General Aviation Modifications, Inc. (GAMI) for its G100UL unleaded aviation fuel receiving the FAA’s approval of a Supplemental Type Certificate (STC) for the fuel’s use in certain Lycoming O-320, O-360, and IO-360 piston engines.
GAMI, an Oklahoma-based company, has dedicated years researching and developing an unleaded aviation fuel. The STC for use of GAMI’s proprietary high-octane unleaded avgas, G100UL, is currently for a limited number of normally aspirated 4-cylinder engines and is a constructive step forward in the development of an unleaded avgas.
The general aviation industry’s ultimate goal is an FAA fleet-wide authorization for a practical unleaded avgas that can replace 100LL with no negative impact on safety and the general aviation community. All three associations collectively acknowledge GAMI’s G100UL fuel STC approval and support further evaluation and testing to determine the fuel’s full potential and what it has to offer the general aviation community.
“This STC is a positive step as we seek a fleet-wide solution for an FAA approved unleaded fuel,” said AOPA President and CEO Mark Baker. “We look forward to learning more about how the STC will be used, and next steps in expanding the number of engines that can safely take advantage of it.”
“We commend GAMI for its hard work and commitment to producing a high-octane unleaded avgas and support its continued testing on a broader range of engines and airframes,” said GAMA President and CEO Pete Bunce. “While this STC is a start, demonstrating the safety and viability of a high-octane fuel as a replacement for 100LL requires significant testing on high performance engines, as well as certain airplanes and helicopters at the most demanding boundary of the performance envelope encompassing the existing fleet of aircraft.”
“We appreciate GAMI’s long-standing commitment to addressing the immense technical challenges of replacing leaded high-octane avgas with an unleaded solution intended to satisfy the safety and performance needs of the fleet,” said EAA President and CEO Jack Pelton. “This STC is a positive first step and we look forward to GAMI’s continued efforts to test additional engines and ideally work toward a path for fleet-wide authorization.”
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