Washington-based carrier Alaska Airlines has agreed to test a new plant-based biofuel being manufactured by the Northwest Advanced Renewables Alliance (NARA).
The NARA project, which is being led by Washington State University, has developed a biofuel using tree limbs and branches which remain after forest harvests and are currently burned.
Alaska will now fly a demonstration flight using 1,000 gallons of the new fuel.
The carrier was the first in the US to fly multiple commercial passenger flights using a biofuel from used cooking oil in 2011 and it plans to complete the first commercial flight using an alcohol-to-jet fuel later this year.
By 2020 Alaska aims to use a biofuel blend on all flights departing one or more airports.