Ryanair Initial Practice Exam

What is the main purpose of a Passenger Service Unit (PSU)?

1. Store passenger luggage

2. Provide emergency oxygen and communication tools

3. Control cabin lighting

4. Monitor passenger activity

The correct answer is: Provide emergency oxygen and communication tools

The main purpose of a Passenger Service Unit (PSU) is to provide essential services to passengers during a flight, particularly in emergency situations. This includes the provision of emergency oxygen masks, which become critical in the event of cabin depressurization. The PSU is typically located above passenger seats and is designed to facilitate safety and communication, ensuring that passengers have access to necessary oxygen supplies if they are needed. Additionally, the PSU may also house lights and flight information systems that assist in passenger comfort and awareness during the flight. However, its core function revolves around emergency preparedness, which is why providing emergency oxygen and communication tools is integral to its design and purpose. This is crucial for maintaining safety standards and ensuring that passengers can respond appropriately in emergencies.