Starting with the new Challenger 300 powerplant, Honeywell will designate all future turbine engines with letters to identify the type of propulsion, such as HTF for a Honeywell turbofan, HTP for a turboprop and HTS for a turboshaft. Previously, the powerplant in the Challenger 300 was designated the AS907 (where AS stood for AlliedSignal–the company that bought Honeywell in late 1999 and adopted the Honeywell name). Hence, the Challenger 300 engine is now designated the HTF7000.