What does the PTU primarily power?

The Primary Turbine Unit (PTU) is primarily responsible for powering the hydraulic systems of an aircraft. It provides hydraulic pressure that is critical for various operations, such as moving flaps, slats, landing gear, and other control surfaces. The PTU ensures that there is enough hydraulic power available, especially during situations where one of the hydraulic systems may experience a drop in pressure or failure. This redundancy is vital for maintaining the aircraft's operational efficiency and safety. While it connects with other components of the aircraft, its main function centers around hydraulic systems, making it essential for the effective functioning of the aircraft's mechanisms that rely on hydraulics.