The path to unleaded avgas remains bumpy following announcements at EAA AirVenture Oshkosh 2026. With the FAA’s transition plan lacking finality, differing approval paths for GAMI and Swift Fuels, and looming deadlines, the general aviation industry faces complex challenges on the road to an unleaded future.
unleaded avgas
FAA Approves More Aircraft For 100R Unleaded Avgas
The FAA has expanded the Approved Model List for Swift Fuels’ 100R unleaded avgas, adding more than 1,200 piston engine and 1,600 airframe models.
Why The 2030 Deadline For Unleaded Avgas Is Final
Many pilots believe the 2030 deadline to phase out leaded 100LL avgas is just another government suggestion. However, environmental regulations and the harsh realities of tetraethyl lead manufacturing mean this transition is actually unavoidable. Discover why general aviation must prepare for a permanently unleaded future.
Why Octane Ratings Don’t Tell the Whole Story for GA Engines
The general aviation industry faces safety and legal hurdles during the transition to 100-octane unleaded fuel. Understanding the discrepancy between test-engine octane ratings and real-world engine performance is vital for maintaining safety and protecting manufacturers from liability.
New Legislation Aims to Bridge Information Gap on Unleaded Avgas
Lawmakers have introduced the UNLEADED Act, a bipartisan bill requiring the FAA to establish an education program for general aviation’s transition to lead-free fuel.
FAA Greenlights Swift Fuels 100R for 840 Engines
With the FAA’s expansion of the AML list, the 100R fuel is approved for engines ranging from 65-hp Continentals to the Lycoming 540 series of engines.
Deep Pockets
A number of issues remain affecting general aviation’s transition to unleaded avgas. Perhaps the most important is the three companies working on the solution lack “deep pockets” in a very litigious society.
KBJC Adds UL94 Unleaded Avgas
The addition of Swift Fuels’ unleaded avgas is another step closer to the airport fully transitioning to unleaded fuels, according to airport officials.
Make Your Voice Heard on The Transition to Unleaded Fuel
You have until March 13, 2026, to comment on the FAA’s draft Transition Plan to Unleaded Aviation Gasoline.