Congress Introduces UNLEADED Act to Close the Knowledge Gap on Certified Unleaded Avgas

Congress Pushes the FAA to Educate Pilots About Unleaded Avgas

Rep. John Obernolte (R-CA) introduced the UNLEADED Act in May 2026, a piece of legislation designed to tackle a knowledge problem: most GA pilots don't know about certified unleaded fuel alternatives, let alone how to use them. The bill directs the FAA to develop a comprehensive educational program on the topic before the 2030 100LL phase-out deadline.

Why Education Matters

General aviation is the single largest source of lead emissions in the United States. That fact has driven the FAA's push to eliminate 100LL (low-lead avgas) by 2030. But here's the problem: many GA pilots and small operators remain unaware that certified alternatives even exist.

Two alternatives have earned FAA certification:

• G100UL (General Aviation Modifications Inc.): A drop-in replacement for 100LL, compatible with most general aviation piston engines
• Swift 100-octane: Another certified alternative with increasing availability

But knowledge is fragmented. Availability varies by region. Pricing hasn't stabilized. And pilots are naturally cautious about fuel—you can't afford to guess.

What the UNLEADED Act Would Do

The bill directs the FAA to create an educational program covering:

• Availability: Where to find certified unleaded alternatives in your region
• Compatibility: Which aircraft and engines can safely use each alternative
• Performance: How unleaded fuels perform compared to 100LL in typical GA operations
• Pricing and cost structure: Realistic expectations around fuel costs
• Transition planning: How individual operators can plan the switch

This is exactly what the GA community needs: centralized, authoritative guidance from the regulator.

The 2030 Deadline

The FAA's existing 100LL phase-out target is 2030—distinct from other regulatory initiatives. That gives Congress and the FAA roughly four years to educate the fleet and ensure adequate supply of alternatives. The UNLEADED Act acknowledges that timeline pressure and proposes a solution.

Broader Context

This legislation reflects growing awareness that regulation without education fails. The industry can't transition to unleaded fuel if pilots and operators don't understand their options. Rep. Obernolte's proposal recognizes that gap.

What This Means for GA Pilots

If the UNLEADED Act passes, expect systematic outreach: FAA guidance documents, sample testing programs, regional webinars, and clear messaging from the FAA about approved alternatives. For you, that means better information to make fuel decisions. Start familiarizing yourself with G100UL and Swift 100-octane now—they're coming, and the countdown to 2030 has already begun.