July 17, 2024, a landmark for aviation history.

A World War II era medium bomber, the Douglas A-26 Invader took off Wednesday from its home base of Ada Regional Airport on a flight over Lake Atoka, Oklahoma, while operating on a unleaded fuel - G100UL high octane unleaded avgas!

So far, the 2000HP, Pratt & Whitney R-2800 Double Wasp engine in this beautiful warbird is the most powerful engine to fly on GAMI’s G100UL high octane unleaded avgas. During the historic 60 minute flight this twin-row, 18-cylinder, air-cooled, radial engine performed magnificently.

George Braly of General Aviation Modifications, Inc. waves to spectators from the cockpit of the A-26 after landing at Ada Regional Airport.

This big-bore radial engine operating at up to 48”MP demonstrates the excellent high octane performance of the G100UL high octane unleaded avgas. The ability to successfully operate this engine as such on an unleaded fuel supports the continued operation of these and many other warbirds well into the future!