What does PSU stand for in aviation?

PSU stands for Passenger Service Unit in aviation. The Passenger Service Unit is an essential component of the aircraft's cabin that houses various passenger amenities, such as reading lights, air vents, and oxygen masks. It is typically located above the seats and is designed to enhance the overall comfort and safety of passengers during their flight.

Understanding the function of the PSU is crucial for flight attendants, as they are responsible for ensuring that passengers are familiar with these units, especially regarding safety procedures, such as the use of oxygen masks in emergencies. This knowledge also aids in responding to passenger needs effectively, enhancing the overall in-flight experience. This highlights the importance of the PSU as it plays a direct role in both passenger comfort and safety.