Safran faced recurrent technical issues, according to Dassault, and in 2015 and 2016, those issues led Safran to announce a new schedule, with engines expected to be delivered in time for the Falcon 5X flight tests this year. But the engines were ready, and Dassault flew the jet Â in July with a preliminary version of the engine, not compliant with the specifications, and started a preliminary flight-test campaign, limited by the engines capacity. The Falcon 5X flight behavior met all the expectations, the company said. Several months ago, Safran experienced issues with the high-pressure compressor and told Dassault of an additional delay and new performance shortfall, making the 2020 entry into service of the aircraft impossible, Dassault says. The Silvercrest engine also is Textron’s choice for the Citation Hemisphere, but that airplane is not scheduled to fly for the first time until 2019. Courtesy of AVweb.