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SAIB: NE-11-56 Semi-Synthetic Jet Fuel

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This Special Airworthiness Information Bulletin (SAIB) advises aircraft operators, Fixed Base
Operators (FBOs), FAA repair stations and FSDOs, and Foreign Civil Aviation Authorities, that jet
fuel made from hydroprocessed fatty acid esters and fatty acids (HEFA) or Fischer Tropsch (FT)
synthetic blending components that meets the requirements of ASTM International Standard D7566
is acceptable for use on aircraft and engines certificated for operation with D1655 Jet A or Jet A-1 jet
fuel, provided that it is re-identified as D1655 fuel. When re-identified as D1655 fuel, D7566 jet fuel
meets all the specification requirements of D1655 and therefore meets the approved operating
limitations for aircraft and engines certificated to operate with D1655 fuel, unless otherwise
prohibited by the engine or aircraft type certificate (TC) holder.


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