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Fuel Follies

Gemini Sparkle

Key Takeaways:

  • California is aggressively pushing for the phase-out of 100LL avgas, with GAMI's G100UL expected to be available on the West Coast and state legislation proposing a complete ban by 2030.
  • The transition to unleaded avgas faces challenges, as the University of North Dakota reported valve issues in aircraft using Swift Fuels' 94UL, leading them to switch back to 100LL.
  • The FAA/industry EAGLE initiative to find a universal 100LL replacement experienced a setback with one candidate fuel failing a key test, while GAMI's G100UL is undergoing real-world flight testing.
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There have been some developments in the industry’s quest to shift itself away from leaded fuel, i.e., 100LL avgas.

We start in California, where the political push to get the lead out is strongest and has already resulted in prohibiting 100LL at a few airports. In early February, George Braly of General Aviation Modifications, Inc. (GAMI) told online sister publication AVweb.com that his company has an agreement that should result in GAMI’s G100UL unleaded avgas being available on the West Coast by mid-year. The fuel is STC-approved for all FAA-certified spark-ignition engines.

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