Emirates has operated its first demonstration flight on a Boeing 777-300ER, powering one of its engines with 100% Sustainable Aviation Fuel (SAF).
The aim is to help refine the playbook for future SAF demonstrations and support future certification where 100% drop-in SAF fuel is approved for aircraft. Currently, SAF is approved for use in all aircraft, but only in blends of up to 50% with conventional jet fuel.
“This flight is a milestone moment for Emirates and a positive step for our industry as we work collectively to address one of our biggest challenges – reducing our carbon footprint,” said Adel Al Redha, Chief Operating Officer, Emirates Airline. “It has been a long journey to finally see this demonstration 100% SAF flight take off. Emirates is the first passenger airline in the world to operate a Boeing 777 powering a GE engine with 100% SAF. Such initiatives are critical contributors to industry knowledge on SAF and provide data to demonstrate the use of higher blends of SAF for future regulatory approvals. We hope that landmark demonstrations flights like this one, will help open the door to scale up the SAF supply chain and make it more available and accessible across geographies, and most importantly, affordable for broader industry adoption in the future.”
Emirates worked alongside partners GE Aerospace, Boeing, Honeywell, Neste and Virent to procure and develop a blend of SAF that closely replicates the properties of conventional jet fuel. At each blend ratio, chemical and physical fuel property measurements were carried out. After multiple lab tests and rigorous trials, they arrived at a blending ratio that mirrored the qualities of jet fuel. Eighteen tonnes of SAF were blended, comprised of HEFA-SPK provided by Neste (hydro processed esters and fatty acids and synthetic paraffinic kerosene) and HDO-SAK from Virent (hydro deoxygenated synthetic aromatic kerosene). The 100% SAF supplied one GE90 engine, with conventional jet fuel supplying the other engine.
“Boeing congratulates Emirates on its successful flight tests using Sustainable Aviation Fuel (SAF),” said Omar Arekat, Vice President, Commercial Sales and Marketing, Middle East, The Boeing Company. “SAF will play a critical role in the aviation industry’s commitment to be net zero by 2050, requiring strong industry collaboration. We were proud to partner with Emirates on these tests and look forward to further working with our partners to enable the widespread use of SAF across the globe.”