Honeywell HTF7000

The Honeywell HTF7000 is a turbofan engine produced by Honeywell Aerospace. Rated in the 6540 - 7,624 lbf range, the HTF7000 is used on the Bombardier Challenger 300/350, Gulfstream G280, Embraer Legacy 500/450 and the Cessna Citation Longitude. Its architecture could be extended for a range of 8,000 to 10,000 lbf 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 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 program is $447 for two engines per hour. Borescope inspections extends time between overhaul and some engines have remained installed for up to 10,000 hr. It has line replaceable components installed with hand tools and is designed for condition-based maintenance.

Variants



 * HTF5000 / AS905
 * A 5000 lbf thrust variant, unsuccessfully targeted toward the Dassault Falcon 7X.


 * HTF7000 / AS907-1-1A
 * 6,826 lbf original variant of the engine. Developed for the Bombardier Challenger 300.


 * 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
 * 7,624 lbf variant developed for use on the Gulfstream G280.


 * HTF7350 / AS907-2-1A
 * 7,323 lbf Variant developed for use on the Bombardier Challenger 350.


 * HTF7500E / AS907-3-1E
 * 6540 - 7036 lbf variant developed for the Embraer Legacy 500/450 business jets and the Praetor 500/600.


 * HTF7700L / AS907-2-1S
 * 7,550 lbf for the Cessna Citation Longitude.


 * HTF10000
 * A 10000 lbf nominal thrust variant.

Applications

 * Bombardier Challenger 300/350
 * Cessna Citation Longitude
 * Gulfstream G280
 * Embraer Legacy 500/450