Williams FJ44

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FJ44
A Williams FJ44-3ATW turbofan engine
Type	Turbofan
National origin	United States
Manufacturer	Williams International
First run	1985[1]
Major applications	Beechcraft Premier I Cessna CitationJet Piper PiperJet Altaire Saab 105 Grob G180 SPn Pilatus PC-24
Developed into	Williams FJ33

The Williams FJ44 is a family of small, two-spool, turbofan engines produced by Williams International for the light business jet market. Until the recent boom in the very light jet market, the FJ44 was one of the smallest turbofans available for civilian applications. Although basically a Williams design, Rolls-Royce was brought into the project at an early stage to design, develop, and manufacture an air-cooled high-pressure (HP) turbine for the engine. The FJ44 first flew on July 12, 1988 on the Scaled Composites/Beechcraft Triumph aircraft.

The Williams FJ33 is a newer, smaller engine based on the basic FJ44 design.