American Airlines has flown a commercial passenger flight partly powered by electro-sustainable aviation fuel (eSAF), following what the carrier describes as the first delivery of non-biobased sustainable aviation fuel to a commercial airport in the United States.
The fuel was produced by Infinium at its Pathfinder facility in Corpus Christi, Texas. It was blended with conventional jet fuel and delivered into the common fuel tanks at Corpus Christi International Airport (CRP), then used aboard an American Eagle Embraer E175 operating from Corpus Christi to Dallas/Fort Worth International Airport (DFW).
Crucially, the flight was not powered entirely by synthetic fuel. The eSAF was blended with conventional jet fuel before being fed into the airport's shared fueling system. American and Infinium say the fuel was tested to meet ASTM specifications for Jet A, allowing it to be used in existing aircraft engines and airport fueling infrastructure without modification — a key requirement for any "drop-in" alternative fuel.
What sets the fuel apart is how it is made. Rather than relying on biological feedstocks such as used cooking oil or plant material, Infinium produces its eSAF from waste carbon dioxide and renewable electricity. The company says the resulting fuel can cut lifecycle greenhouse-gas emissions by more than 90% compared with conventional petroleum-based jet fuel.
"Adding eSAF to our product slate, and seeing it power a commercial passenger flight, marks another meaningful step forward in bringing practical, low-carbon fuel solutions to industry," Infinium chief executive Robert Schuetzle said.
Synthetic kerosene is not entirely new to commercial aviation — KLM used it on a passenger flight back in 2021 — but American and Infinium say this marks the first time SAF made without biobased feedstocks has been supplied to a commercial airport in the US. That distinction matters because biobased SAF supply is constrained by the availability of feedstocks, whereas power-to-liquid pathways like Infinium's are limited mainly by access to clean electricity and captured carbon.
For American, the flight is a demonstration rather than a wholesale switch: the volumes involved are small and blended. But routing a novel fuel through an ordinary airport's shared tanks and onto a scheduled regional flight is precisely the kind of real-world test the industry needs as it works toward tougher long-term emissions targets.
Sources: AeroTime, AirlineGeeks. Featured image: AI-generated by AviationShop. By Daniel Okafor.
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