Flight Attendants Training Practice

The passenger service unit (PSU) is an essential component of an aircraft's cabin, designed to provide immediate needs and safety features for passengers. This unit typically includes critical elements such as individual air vents and emergency oxygen masks. The air vents allow passengers to control their personal comfort by adjusting airflow, while the emergency oxygen masks are vital for passenger safety during in-flight emergencies, ensuring that passengers can breathe if cabin pressure drops unexpectedly.

Other options listed relate to different aspects of passenger amenities but are not components of the PSU. For example, entertainment systems generally refer to in-flight entertainment provided separately, and restroom access is a matter of cabin layout rather than part of the PSU. Reading materials are also typically provided by the airline but are not housed within the PSU itself. Therefore, understanding what comprises the PSU is crucial for recognizing the functions designed for passenger comfort and safety on an aircraft.