The Honeywell HTF7000 family of engines was first introduced in 2004 and has accumulated more than 3.5 million flight hours. Nearly 2,000 HTF7000-series engines have rolled out of Honeywell’s factory in Phoenix, Arizona. The HTF770L is the seventh engine to be certified in this series. The Longitude is the first Citation to be powered by one of these engines. Prior applications include Bombardier’s Challenger 300 and 350, Gulfstream’s G280 and Embraer’s Legacy 450 and 500.