The Honeywell HTF7000 is a

turbofan A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the add ...

engine produced by

Honeywell Aerospace Honeywell Aerospace Technologies is a manufacturer of aircraft engines and avionics, as well as a producer of auxiliary power units (APUs) and other aviation products. Headquartered in Phoenix, Arizona, it is a division of the Honeywell Intern ...

. Rated in the range, the HTF7000 is used on the

Bombardier Challenger 300 The Bombardier Challenger 300 is a range super mid-sized business jet designed and produced by the Canadian aircraft manufacturer Bombardier Aerospace. Development of the aircraft, originally called the Bombardier Continental, begun during th ...

/350,

Gulfstream G280 The Gulfstream G280 is a twin-engine business jet built by Israel Aerospace Industries (IAI) for Gulfstream Aerospace. It began delivery to users in 2012. Development In 2005, Gulfstream and IAI began designing a follow-on aircraft to the Gul ...

, Embraer Legacy 500/450 and the Cessna Citation Longitude. Its architecture could be extended for a range of thrust.

Operational history

The engine was originally designated the AS907, which was changed in 2004 to HTF7000; the AS907 designation is still used for legal and regulatory use. By October 2016, 2.6 million hours had been logged by 1,400 in service engines and it has a 99.9% dispatch reliability rate. Average

fuel consumption A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but ...

is about lb. per hour for a 7,765 lbf engine on a G280, to be compared to lb. per hour for a 4,420 lbf TFE731 on a G150. More than 3.5 million flight hours have been logged till October 2017, and the 2,000th engine should be delivered in 2018. Honeywell

maintenance The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installa ...

program is $447 for two engines per hour. Borescope inspections extends

time between overhaul Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. On rotorcraft, many components have recommended or ma ...

and some engines have remained installed for up to 10,000 hr. It has line replaceable components installed with

hand tool A hand tool is any tool that is powered manual labour, by hand rather than a motor. Categories of hand tools include wrenches, pliers, cutter (disambiguation), cutters, File (tool), files, hammer, striking tools, chisel, struck or hammered tools, ...

s and is designed for

condition-based maintenance Predictive maintenance techniques are designed to help determine the condition of in-service equipment in order to estimate when maintenance should be performed. This approach claims more cost savings over routine or time-based preventive maint ...

Variants

;HTF5000 / AS905 :A thrust variant, unsuccessfully targeted toward the

Dassault Falcon 7X The Dassault Falcon 7X is a large-cabin, range business jet manufactured by Dassault Aviation. Unveiled at the 2001 Paris Air Show, its first flight took place on 5 May 2005 and it entered service on 15 June 2007. The Falcon 8X, first delivered ...

. ;HTF7000 / AS907-1-1A : original variant of the engine. Developed for the

. ;AS977 : Higher thrust variant of the AS907, designed at the same time, intended to power BAE System's Avro RJX. The aircraft was cancelled after three airframes were built and flown; subsequently this variant never entered production. ;HTF7250G / AS907-2-1G : variant developed for use on the

. ;HTF7350 / AS907-2-1A : Variant developed for use on the

Bombardier Challenger 350 The Bombardier Challenger 300 is a range super mid-sized business jet designed and produced by the Canadian aircraft manufacturer Bombardier Aerospace. Development of the aircraft, originally called the Bombardier Continental, begun during t ...

. ;HTF7500E / AS907-3-1E : variant developed for the Embraer Legacy 500/450 business jets and the Praetor 500/600. ;HTF7700L / AS907-2-1S : for the Cessna Citation Longitude. ;HTF10000 :A nominal thrust variant.

Applications

/350 * Cessna Citation Longitude *

* Embraer Legacy 500/450

Specifications

References

External links