Boeing, NASA, United Partner on In-Flight SAF Study

Using a Boeing 737 MAX 10 and a NASA DC-8, the group will monitor and record emission data from the 737 using SAF and traditional jet fuel in flight.

Zach Cooke

Friday, October 13, 2023 at 04:51 PM ET

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[Courtesy: Boeing]

Key Takeaways:

Boeing, NASA, and United Airlines are conducting air-to-air flight tests to compare emissions from Sustainable Aviation Fuel (SAF) and traditional jet fuel.
A Boeing 737 MAX 10, specially painted, will fly with both fuel types while a NASA DC-8 monitors and records atmospheric data, including contrail ice particles.
The testing aims to gain a deeper understanding of how fuel designs, engine combustion, and other technologies can reduce aviation's atmospheric heating and environmental impact.
SAFs, made from materials like cooking oil and agricultural waste, are considered the most promising solution, capable of reducing lifecycle emissions by up to 85%.

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Airlines and manufacturers across the globe are pouring resources and time into finding a fuel solution that will reduce the impact aviation has on the environment. Boeing, the German Aerospace Center, NASA and United Airlines are continuing the search in a rather interesting way. Using a Boeing 737 MAX 10 painted in a special United eco livery and a NASA DC-8, the group will monitor and record emission data from the 737 using SAF and traditional jet fuel in flight.

Boeing has used numerous ecoDemonstrator aircraft over the years to improve industry understanding of the impacts aviation has on the environment. Most recently, the Arlington, Va.-based manufacturer has used an Alaska Airlines 737 MAX 9, 777-200ER and 787-10. The 737 MAX 10 which will be used during the air-to-air flights has been painted with a special livery signifying the environmental mission the aircraft will carry out.