What is a Passenger Service Unit (PSU)?

What is a Passenger Service Unit (PSU)?

• A. An area above passengers containing air vents, reading lights, drop-down oxygen masks, and signs.
• B. A device that powers in-flight entertainment.
• C. The cockpit instrument cluster.
• D. A seat row configuration.

Answer: (A)

The Passenger Service Unit is the panel above each passenger’s seat that gives access to personal air, lighting, emergency oxygen, and safety indicators. It houses the air vents you can adjust to direct airflow, the reading light for individual use, and the drop-down oxygen masks that deploy in a depressurization to supply breathable air. It also includes safety signs such as seat belt and no-smoking indicators. Some versions may also have a call button to contact the crew. So, this option correctly describes the PSU as the area above passengers containing air vents, reading lights, drop-down oxygen masks, and signs. It isn’t the system that powers in-flight entertainment, the cockpit instrument cluster, or the seat row configuration.

The Passenger Service Unit is the panel above each passenger’s seat that gives access to personal air, lighting, emergency oxygen, and safety indicators. It houses the air vents you can adjust to direct airflow, the reading light for individual use, and the drop-down oxygen masks that deploy in a depressurization to supply breathable air. It also includes safety signs such as seat belt and no-smoking indicators. Some versions may also have a call button to contact the crew.

So, this option correctly describes the PSU as the area above passengers containing air vents, reading lights, drop-down oxygen masks, and signs. It isn’t the system that powers in-flight entertainment, the cockpit instrument cluster, or the seat row configuration.