FAA Looking Into Possible G100UL Fuel Issues

Credit: General Aviation Modifications, Inc. (GAMI)
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Key Takeaways:

  • The FAA is investigating reports of aircraft damage, including peeling paint, fuel leaks, and engine issues, potentially linked to the use of GAMI's G100UL unleaded fuel.
  • These incidents have been reported in California, primarily at Watsonville and Reid-Hillview Airports, affecting over 100 aircraft approved to use the fuel.
  • GAMI is conducting its own materials testing and encouraging operators who suspect fuel-related damage to report incidents.
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The FAA is now reportedly investigating reports of damage to aircraft related to their use of GAMI’s G100UL unleaded fuel in California. Inspectors looked at several planes involved at Watsonville Airport south of San Francisco. Various incidents of peeling paint, leaking fuel tanks and even a bent pushrod/seized valve have been reported in various forums.

GAMI is responding to inquiries and doing its own materials testing and is encouraging operators who believe the fuel is affecting their aircraft to report incidents. G100UL is being sold at Watsonville and Reid-Hillview Airport near San Jose. More than 100 airplanes at those fields and some from neighboring airports have the STC that allow them to use the unleaded gas.

Russ Niles

Russ Niles is Editor-in-Chief of AVweb. He has been a pilot for 30 years and joined AVweb 22 years ago. He and his wife Marni live in southern British Columbia where they also operate a small winery.
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