FAA has published its notes from the first meeting of the Aviation Rulemaking Committee meeting addressing replacements for leaded aviation gasoline. ABS Air Safety Foundation is helping support ARC participation by representatives of the Clean 100 Octane Coalition, a committee of 19 airplane "type clubs" and similar users groups.
The FAA reports (emphasis added):
Unleaded Avgas Transition Aviation Rulemaking Committee Holds First Meeting
The first meeting of the Unleaded Avgas Transition Aviation Rulemaking Committee (ARC) was held on March 16 a