RE:***New Challenger will use new Honeywell’s HTF7K engine***"Honeywell would not have wanted to lose it place on the new Challenger. The engine maker’s HTF7000 has seen amazing success in the super-mid-size category. As well as the Challenger 3500, it is on the Cessna Longitude, Gulfstream G280 and the Praetor 500 and Praetor 600. In April the engine hit its 10,000 millionth flight hour and at the time Honeywell said it expected to build 8,000 HTF7000s."