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FAA Testing of 100LL Replacement Fuels Begins

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Key Takeaways:

  • The FAA has launched Phase I testing of four unleaded aviation fuels developed by Swift Fuels, Shell, and Total, officially beginning the transition away from low lead avgas.
  • This testing is part of the Piston Aviation Fuels Initiative (PAFI), a joint industry-government effort to develop a new unleaded avgas for the existing piston-engine aircraft fleet.
  • Phase I involves laboratory and rig testing for fuel compatibility with aircraft systems, with selected candidates advancing to Phase II flight trials.
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The FAA has launched Phase I testing of four unleaded aviation fuels at its William J. Hughes Technical Center in Atlantic City, New Jersey, officially beginning aviation’s much heralded transition away from low lead avgas.

Two fuels developed by Swift Fuels and one fuel each developed by Shell and Total are now undergoing laboratory and rig testing, which is expected to continue for the next year as the FAA seeks to start phasing out 100LL avgas as early as 2018.

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