Airlines for America (A4A) applauds the addition of a seventh annex to ASTM International's sustainable aviation fuel (SAF) specification, D7566.
ASTM International approved and published the new annex to D7566 with support from CAAFI. Annex A7 establishes criteria for the production and use of a type of synthesized paraffinic kerosene from hydroprocessed hydrocarbons, esters and fatty acids (HC-HEFA-SPK). The standard provides that HC-HEFA-SPK fuel, which was developed by IHI Corporation, may be blended at up to 10 percent by volume with conventional jet fuel. It represents the seventh approved pathway for the production of SAF. This fuel pathway was the first to receive expedited review under ASTM's "fast track" review process and benefitted from guidance from a special clearinghouse established by the U.S. Federal Aviation Administration (FAA) to help guide SAF producers through the rigorous assessment and approval process.
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