GAMI Secures Piston Fleet Approval for Unleaded Avgas | Aviation International News

Sustainability and Environment

GAMI Secures Piston Fleet Approval for Unleaded Avgas

The FAA, which gave fleet approvals for use of GAMI's G100UL in piston aircraft, plans to use the same review process for other unleaded candidates.

George Braly, co-founder of GAMI, at EAA AirVenture 2021, announced receipt of an FAA STC approving the use of his company's G100UL high-octane unleaded fuel in a variety of Lycoming engines. Now the fuel is approved for all spark-ignition aircraft engines. (Photo: Matt Thurber/AIN)

By Kerry Lynch • Editor, AIN monthly magazine

September 2, 2022

The FAA on Thursday granted supplemental type certificates for the use of the General Aviation Modifications Inc. (GAMI) G100UL high-octane unleaded fuel throughout the piston-powered aircraft fleet. Deputy FAA Administrator Bradley Mims called the action a “major step toward supporting the safe replacement of leaded gas.”

Under the broad approval, the agency is requiring GAMI to work with aircraft owners to track and report any mechanical issues that may arise from use of the fuel, as well as to track fuel deliveries to airports across the nation. The move followed a review by an independent technical panel that evaluated GAMI’s test results and other documentation, the FAA said, adding it plans to use the same process for other potential unleaded fuel candidates as they near readiness for the market.

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