Williams FJ33

FJ33
Type Turbofan
National origin United States
Manufacturer Williams International
First run 1998
Major applications Cirrus Vision SF50
Diamond D-Jet
Developed from Williams FJ44

The Williams FJ33 is an American family of turbofan jet engines intended for use in very light jet aircraft. The FJ33 is a scaled-down version of the FJ44 engine. The FJ33-5A is the latest version certified in June 2016.