Emirates has operated its first milestone demonstration flight on a Boeing 777-300ER, powering one of its engines with 100% Sustainable Aviation Fuel (SAF). The flight took off from Dubai International Airport (DXB), and was commanded by Captain Fali Vajifdar and Captain Khalid Nasser Akram, flying for more than one hour over the Dubai coastline.
The demonstration flight powered by SAF holds particular significance as the UAE declares 2023 the ‘Year of Sustainability’. The year will showcase the UAE’s commitment to seek innovative solutions to challenges such as energy, climate change and other issues related to sustainability. The flight supports collective industry efforts to enable a future of 100% SAF flying and help advance the UAE’s sustainability objectives.
Emirates’ demonstration flight, the first in the Middle East and North Africa to be powered by 100% SAF, supports broader efforts to reduce lifecycle CO2emissions as the industry looks to scale up its use of SAF. The flights will also help to refine the playbook for future SAF demonstrations, and will also 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.
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, a host of 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.
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The test flight further demonstrates the compatibility of the specially blended SAF as a safe and reliable fuel source. The promising outcome of this initiative also adds to the body of industry data and research around SAF blends in higher proportions, paving the way for standardization and future approval of 100% drop-in SAF as a replacement for jet fuel, well above the current 50% blend limit.
“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. 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,” Adel Al Redha, Chief Operating Officer, Emirates Airline, said.
“My congratulations go to Emirates on this achievement. SAF is critical to helping the aviation industry reach its goal to be net zero by 2050 and collaborations like this to test 100% SAF globally will help bring us closer to this target,” Aziz Koleilat, vice president of global sales and marketing in the Middle East for GE Aerospace, added.
“Boeing congratulates Emirates on its successful flight tests using sustainable aviation fuel (SAF),” Omar Arekat, Vice President, Commercial Sales and Marketing, Middle East, The Boeing Company, commented. “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.”
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“We are excited to apply our technology to such a milestone demonstration. The 331-500 auxiliary power unit or APU is an integral part of the Boeing 777 aircraft system. The APU provides main engine starting, environmental control and emergency back-up systems for the aircraft on the ground and in-flight. It uses the same fuel as the main propulsion engines. Currently the APU is certified to run on only 50% SAF, so this demonstration is a big first step in showing full APU functionality and capability when running on 100% SAF,” Mosab Alkubaisy, Director of Airlines, Honeywell Aerospace Middle East, said.
“Neste is working closely together with partners to accelerate the availability and use of SAF, which plays a crucial role in reducing the emissions of air travel. To fully leverage its decarbonisation potential we need to enable 100% SAF use and test flights like this Emirates flight are an important step towards 100% SAF certification. It also shows the importance of cooperation to achieve the emission reduction goals and Neste is committed to play our part in ensuring Dubai and the UAE continue to be a leader on sustainability and emission reductions in the aviation sector, as we increase our SAF production capacity to 1.5 million tons per annum by the end of this year. We look forward to growing the supply of SAF to Dubai,” Jonathan Wood, Vice President EMEA, Renewable Aviation at Neste, stated.
“Virent’s technology converts widely available, plant-based sugars into the compounds that make 100% sustainable aviation fuel possible, without the need to blend with traditional jet fuel,” Dave Kettner, president and general counsel of Virent, Inc, added. “Along with our parent company Marathon Petroleum Corporation, we are committed to meeting today’s energy needs while investing in an energy diverse future, and today’s flight is a great example of this commitment. We’re excited about this opportunity to work with our forward-thinking colleagues at Emirates, GE Aerospace, Boeing, Honeywell and Neste as we demonstrate that we can power sustainable aviation without modifying today’s modern airline engines or the infrastructure that serves the airline industry.”
His Excellency Saif Humaid Al Falasi, Group CEO at ENOC praised the achievement as it coincides with 2023 as the ‘Year of Sustainability’, which was announced by the UAE’s President His Highness Sheikh Mohamed bin Zayed Al Nahyan. It also represents a major step towards reducing carbon dioxide emissions and achieving climate neutrality. “At ENOC, we prioritise working closely with our strategic partners to implement a national roadmap for sustainable aviation fuel. This not only aims to accelerate the decarbonisation of the aviation sector, but also contributes to achieving the UAE’s goals in climate neutrality, enhances the efficiency and conservation of fuel, as well as positions the UAE as a regional hub for sustainable aviation fuel. Playing an active role in supplying Dubai Airports with aviation fuel, ENOC Group is participating in this achievement by securing and blending sustainable aviation fuel, which will help to secure this type of fuel in the UAE in the future.”
Emirates is committed to supporting initiatives that help minimise its CO2emissions, and the airline has already made great strides in fuel efficiency and conservation as well as operational advancements across its operations. The airline also supports IATA’s collective industry commitment to reach net zero emissions by 2050, and is exploring opportunities to augment operational fuel efficiency, SAF, low carbon aviation fuels (LCAF) and renewable energy.
The airline already runs a comprehensive fuel efficiency programme that actively investigates and implements ways to reduce unnecessary fuel burn and emissions, wherever it is operationally feasible. Some of the programme’s most significant initiatives include the operation of “flex tracks”, or flexible routings – partnering with air navigation service providers to create the most efficient flight plan for each flight. These efforts have been ongoing since 2003, and Emirates has been working with IATA to extend this routing system across the world as a standard operating procedure where possible.
Emirates’ first flight powered by SAF blended with jet fuel was in 2017, operating from Chicago O’Hare airport on a Boeing 777. It received its first SAF-powered A380 delivery in 2020, and also uplifted 32 tonnes of SAF for its flights from Stockholm that same year.