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K Sarsfield, Gulfstream takes refined approach to biofuel sale, Flight International, 26 March - 1 April 2019, p 20

In US, Gulfstream has sold 9080 kg of biofuels comprising 30% hydroprocessed esters and fatty acids with 70% of Jet-A for a customer’s G550 aircraft. This represents a reduction of over 50% in greenhouse gases on a life-cycle basis 

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