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The Koninklijke Luchtmacht (Royal Netherlands Air Force) began test flying an F-16 from Leeuwarden Air Base with a mix of 5% Sustainable Aviation Fuel (SAF), developed by SkyNRG, and kerosene on July 2. Sustainable Aviation Fuel is a bio-fuel converted from biomass feedstocks using one of five certified technologies. According to SkyNRG, the F-16 was powered with Hydrotreated Esters and Fatty Acids (HEFA) fuel produced from used cooking oil blended with fossil kerosene (5% HEFA SAF and 95% fossil kerosene). In 2010, one engine of a Dutch AH-64D Apache was driven by a mix of 50% SAF and 50% kerosene. Bob Fischer
