No Blends This Time, Just Pure Synthesized Fuel
Gulfstream Aerospace capped the "world’s first trans-Atlantic flight using 100% sustainable aviation fuel (SAF)" this month, using one of their G600 aircraft on a leg between Savannah, Georgia and England's Farnborough Airport. Gulfstream's mission made use of their G600's standard Pratt & Whitney PW815GA engines, allowing them to gain extended flight data for a pure SAF fuel. In the past, similar flights have been done on a blend of traditional Jet A/SAF blends, generally below a ratio of 50%. The use of pure SAF takes advantage of more domestic logistics chains, lower carbon, sulfur, and aromatics compared to standard petroleum products.