The Pratt & Whitney GTF (Geared Turbofan) is a type of aircraft engine designed to improve fuel efficiency and reduce noise. It features a unique gear system that allows the fan to operate at a different speed than the engine core, optimizing performance across various flight conditions. This innovation helps airlines save on fuel costs and meet stricter environmental regulations. The GTF engine is used in several modern aircraft, including the Airbus A220 and Embraer E-Jet E2 families. Its advanced technology not only enhances performance but also contributes to lower emissions, making it a popular choice for airlines focused on sustainability.