Question 1

What measures are in place to protect the supply of 100LL if an unleaded solution is not available by 2030?

Eagle · Accepted Answer

We are actively monitoring fuel supply and working with stakeholders, including TEL producer Innospec, to ensure continued availability until a safe, acceptable alternative is in place. At this time, there is no legislative ban on 100LL in 2030; the date is a goal, not a cutoff. Ongoing data collection and coordination will inform future actions and necessary rulemaking, ensuring the fleet is supported and a smooth transition is achieved.

Congress recognized the importance of 100LL aviation gasoline remaining available during the transition phase until a suitable unleaded replacement is approved and widely available across U.S. airports. In 2025, FAA implemented a new grant assurance requiring continued availability of 100LL aviation gasoline at federally funded airports through at least Dec. 31, 2030 (December 31, 2032 in Alaska), or until an FAA-approved unleaded alternative becomes widely available. See the FAA Questions/Answers on Grant Assurance 40, Access to Leaded Aviation Gasoline.

Question 2

What measures are in place to protect the supply of 100LL if an unleaded solution is not available by 2030?

Eagle · Accepted Answer

We are actively monitoring fuel supply and working with stakeholders, including TEL producer Innospec, to ensure continued availability until a safe, acceptable alternative is in place. At this time, there is no legislative ban on 100LL in 2030; the date is a goal, not a cutoff. Ongoing data collection and coordination will inform future actions and necessary rulemaking, ensuring the fleet is supported and a smooth transition is achieved.

Congress recognized the importance of 100LL aviation gasoline remaining available during the transition phase until a suitable unleaded replacement is approved and widely available across U.S. airports. In 2025, FAA implemented a new grant assurance requiring continued availability of 100LL aviation gasoline at federally funded airports through at least Dec. 31, 2030 (December 31, 2032 in Alaska), or until an FAA-approved unleaded alternative becomes widely available. See the FAA Questions/Answers on Grant Assurance 40, Access to Leaded Aviation Gasoline.