Gulfstream completes first trans-Atlantic flight on 100% sustainable aviation fuel

Gulfstream completed the first trans-Atlantic flight powered entirely by sustainable aviation fuel on November 19, flying a G600 from Savannah to Farnborough in under seven hours. The milestone advances the case for unblended SAF, relevant as India develops its own sustainable aviation fuel ambitions.

Gulfstream Aerospace completed the inaugural trans-Atlantic flight fuelled entirely by sustainable aviation fuel on November 19, flying a Gulfstream G600 from Savannah to Farnborough Airport in England in approximately 6 hours and 56 minutes, powered by Pratt & Whitney PW815GA engines on 100% SAF. The fuel, supplied by World Energy and distributed by World Fuel Services, was composed entirely of Hydroprocessed Esters and Fatty Acids (neat HEFA), exhibiting at least a 70% reduction in lifecycle CO2 emissions compared to fossil-based jet fuel.

The achievement affects the business aviation sector and SAF supply chain. As the first business jet original equipment manufacturer to conduct a flight on 100% SAF, Gulfstream gathered endurance data to assess aircraft compatibility with future low-aromatic renewable fuels in cold temperatures and extended durations. The zero-added-aromatics fuel reduces local air quality impact and sulfur content, lowering non-CO2 effects. Contributors included Honeywell, Safran, Eaton, and Pratt & Whitney, whose Anthony Rossi cited validating engine compatibility with unblended SAF.

Aviation manufacturers and operators should monitor data emerging from this endurance flight on aircraft and engine compatibility with 100% unblended SAF, particularly in cold temperatures and long durations. Companies pursuing aviation decarbonisation should track progress toward broader 100% SAF certification and usage championed by Gulfstream and Pratt & Whitney. Indian aviation stakeholders developing SAF capacity can study the lifecycle emissions benefits and technical validation milestones as the industry advances toward unblended renewable fuel adoption.

Key figure — Emissions reduction: at least 70% lower lifecycle CO2 versus fossil jet fuel