- FAA – Engine & Propeller Directorate, Aircraft Certification Service (Sponsor, Co-Chair, Fuels Specialist)
- FAA – Emission Division, Office of Environment and Energy
- FAA – Aviation Research & Technology Development Office, William J. Hughes Technical Center
- EPA – Environmental Protection Agency
- General Aviation Industry Engineering Consultant (Co-Chair)
- AOPA – Aircraft Owners and Pilots Association
- GAMA – General Aviation Manufacturers Association
- EAA – Experimental Aircraft Association
- Lycoming
- Teledyne Continental Motors
- Cirrus Aircraft
- Cessna Aircraft
- API – American Petroleum Institute
- Shell
- ExxonMobil
- NATA – National Air Transportation Association
- Swift Fuels
- GAMI – General Aviation Modifications, Inc.
- Clean 100 Coalition
Last updated: Tuesday, May 28, 2013