IATA's Willie Walsh cites a study saying $4.7 trillion in SAF costs through 2050, and there's no way airlines can or will pay that. Notes recognition outside the industry that we're not in a business as usual world. #AviationFest#AvGeek

Walsh: "This transition is frightening." But also, "There is no other option than SAF at this stage." Recognizes that kerosene-powered planes are going to still be flying 30+ years from now. "We have to find an alternative fuel source, and the only one available today is SAF." #AvGeek#AviationFest