ASTM International Aviation Fuel Subcommittee J has issued two standards to facilitate the evaluation of data and the establishment of specification criteria for new alternative jet fuels.These are ASTM D4054 – “Standard Practice for Qualification and Approval of New Aviation Turbine Fuels and Fuel Additives”, and ASTM D7566 – “Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons”.
ASTM D4054 was developed to provide the producer of an alternative jet fuel with guidance regarding testing and property targets necessary to evaluate a candidate alternative jet fuel.
D4054 is an iterative process, which requires the candidate fuel developer to test samples of fuel to measure properties, composition, and performance. The testing covers basic specification properties, expanded properties called fit-for-purpose (FFP) properties, engine rig and component testing, and if necessary, full-scale engine testing. This is a rigorous process that requires participation and input from many of the stakeholders at ASTM.
If the fuel successfully passes, this process may result in the development of a proposed annex for incorporation into ASTM D7566 as a drop-in synthetic jet fuel.
This User’s Guide joins the Path to Alternative Jet Fuel Readiness Document, the Fuel Readiness Level Document, the FRL Exit Criteria Document, and the other tools on CAAFI’s Fuel Readiness Tool page that aim to clarify the alternative jet fuel development and certification processes for fuel producers.
The D4054 User’s Guide also provides an index of facilities that have demonstrated the technical capabilities necessary to perform the aviation fuel property testing required by D4054, and have expressed an interest in performing those tests in the future.