The Honeywell HTF7000 is a

turbofan The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which ac ...

engine produced by

Honeywell Aerospace Honeywell Aerospace 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 International conglome ...

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

Bombardier Challenger 300 The Bombardier Challenger 300 is a range business jet made by Bombardier Aerospace. Announced at the 1999 Paris Air Show, it made its maiden flight on 14 August 2001, received its Canadian type approval on 31 May 2003 and was introduced on 8 J ...

/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 Gulf ...

and

Embraer Legacy 500 The Embraer Legacy 450/500 and Praetor 500/600 are a family of mid-size and super mid-size business jets built by Brazilian aircraft manufacturer Embraer. The aircraft family was launched with the Legacy 500 in April 2008 and were the first jets ...

/450 and the

Cessna Citation Longitude The Cessna Citation Longitude is a business jet produced by Cessna, part of the Cessna Citation family. Announced at the May 2012 EBACE, the Model 700 made its first flight on October 8, 2016, with certification obtained in September 2019. The ...

. 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 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 Gu ...

, to be compared to lb. per hour for a 4,420 lbf

TFE731 The Garrett TFE731 (now Honeywell TFE731) is a family of geared turbofan engines commonly used on business jet aircraft. Garrett AiResearch originally designed and built the engine, which due to mergers was later produced by AlliedSignal and n ...

on a

G150 The Gulfstream G100, formerly known as the IAI Astra SPX, is an Israel Aerospace Industries-manufactured twin-engine business jet, that was produced for Gulfstream Aerospace. Deliveries began in 1986. The United States Air Force employs the ai ...

. 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 Maintenance may refer to: Biological science * Maintenance of an organism * Maintenance respiration Non-technical maintenance * Alimony, also called ''maintenance'' in British English * Champerty and maintenance, two related legal doctrine ...

program is $447 for two engines per hour.

Borescope A borescope (occasionally called a boroscope, though this spelling is nonstandard) is an optical instrument designed to assist visual inspection of narrow, difficult-to-reach wikt:cavity#Noun, cavities, consisting of a rigid or flexible tube with ...

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 man ...

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 by hand rather than a motor. Categories of hand tools include wrenches, pliers, cutters, files, striking tools, struck or hammered tools, screwdrivers, vises, clamps, snips, hacksaws, drills, and kni ...

s and is designed for on-condition maintenance. MAN 7 5 11 (5696845493)

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, the second largest of its Dassault Falcon line. Launched at 2001 Paris Air Show, its first flight was on 5 May 2005 and it entered service on 15 Jun ...

. ;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 British Aerospace 146 (also BAe 146) is a short-haul and regional airliner that was manufactured in the United Kingdom by British Aerospace, later part of BAE Systems. Production ran from 1983 until 2001. Manufacture by Avro International ...

. 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 business jet made by Bombardier Aerospace. Announced at the 1999 Paris Air Show, it made its maiden flight on 14 August 2001, received its Canadian type approval on 31 May 2003 and was introduced on 8 J ...

. ;HTF7500E / AS907-3-1E : variant developed for the

/450 business jets and the Praetor 500/600. ;HTF7700L / AS907-2-1S : for the

. ;HTF10000 :A nominal thrust variant.

Applications

/350 *

/450

Specifications

References

External links

* * {{Garrett/Honeywell aeroengines

HTF7000 The Honeywell HTF7000 is a turbofan engine produced by Honeywell Aerospace. Rated in the range, the HTF7000 is used on the Bombardier Challenger 300/350, Gulfstream G280 and Embraer Legacy 500/450 and the Cessna Citation Longitude. Its architec ...