General Aviation Modifications, Inc.

Latest News

G100UL update

Listen to George Braly give a summary of the situation with G100UL avgas so far, and an insight into the background of how G100UL came to be. Interview starts at 21m30s.

Aero Friedrichshafen 2022: GAMI’s G100UL high octane unleaded avgas wins the flieger magazine 2022 AWARD for the innovation of the year.

Senator James Inhofe (R-Ok.) is surprised at EAA Oshkosh 2021 with a presentation of an 11 year old photograph taken when he became only the second pilot (after George Braly) to ever pilot an aircraft operating on G100UL™ high octane unleaded avgas.

GAMI G100UL™ Press Conference at Sun 'n Fun 2022

G100UL™ Presentation - Sun 'n Fun 2022

EPA to Evaluate Whether Lead Emissions from Piston-Engine Aircraft Endanger Human Health and Welfare

EPA Press Office. January 12 2022

The U.S. Environmental Protection Agency (EPA) announced today that it will evaluate whether emissions from piston-engine aircraft operating on leaded fuel contribute to air pollution that endangers public health and welfare. The agency plans to issue a proposal for public review and comment in 2022 and take final action in 2023.

G100UL™ Oshkosh Presentation Slides

- July 28, 2021

GAMI receives unleaded avgas STC

Thomas B Haines - AOPA. July 2021

The decades long effort to find a suitable replacement for 100-octane leaded avgas moved one step closer to a solution July 27 when General Aviation Modifications Inc. (GAMI) announced that it has received two supplemental type certificates authorizing the use of its G100UL high-octane unleaded avgas...

GAMI Crosses The Finish Line

Paul Bertorelli - AvWeb. July 2021

When George Braly and Tim Roehl embarked upon the should-not-have-been-so-hard task of developing a 100-octane unleaded fuel, I was still a young man. Pretty much 11 years younger. That's how long it took for the FAA to stop dragging its feet, cease erecting bureaucratic barriers and refrain from changing the rules after every test proposal. But as of Tuesday, the deed is done. General Aviation Modifications Inc. got its STC for G100UL fuel...