The FJ44 is a turbofan engine designed for business jets and regional aircraft. It is produced by Williams International, known for its focus on fuel efficiency and reliability. The engine features a high bypass ratio, which contributes to lower noise levels and reduced emissions compared to older engine models. This engine family includes several variants, each tailored for different aircraft requirements. The FJ44 is recognized for its advanced technology, including a digital engine control system that enhances performance and operational efficiency. It is commonly used in aircraft such as the Cessna Citation series and the Embraer Phenom.