The dangers posed by lead’s carcinogenic toxicity, whether it’s inhaled or absorbed into the bloodstream, have been well-known for decades. Lead is particularly harmful to children during their developmental years. The U.S. Environmental Protection Agency began discussing a total ban on lead in automobile gasoline back in the mid-1980s and outlawed the heavy metal in all fuel sold in the United States nearly 25 years ago, with one exception: aviation gasoline, or avgas.
When Will We See Unleaded AvGas?
Key Takeaways:
- Leaded aviation gasoline (100LL) remains a significant source of lead emissions and health concerns, particularly for children, making general aviation the primary remaining contributor of lead emissions in the U.S.
- Finding a replacement for 100LL is challenging due to the small market size, the critical need for a high-octane fuel that offers 100% backward compatibility without engine adjustments, and the requirement for it to be cost-competitive and safely deployable across the entire fleet.
- While the FAA's Piston Aviation Fuels Initiative (PAFI) has faced delays in identifying a fleet-wide solution, companies like Swift Fuels and GAMI are independently developing and certifying their own unleaded avgas alternatives, with a potential regulatory push from the EPA expected to drive the transition.
Key takeaways sponsored by Aviator Pro | Start Your Training ->
See a mistake? Contact us.
