Where is the Passenger Service Unit (PSU) typically located?

The Passenger Service Unit (PSU) is typically located above every section of seats on an aircraft. This design ensures that each passenger has easy access to essential services provided in the PSU, which generally includes reading lights, air vents, and, in some aircraft, the passenger oxygen masks. By placing the PSU above the seating areas, it enhances passenger comfort and safety, allowing individuals to adjust their personal environment without needing to rely on cabin crew. The accessibility of these units plays a crucial role during flights, particularly in emergencies when the oxygen masks may need to be deployed quickly.

The other locations mentioned, such as the galley, near emergency exits, or in the cargo hold, do not typically accommodate passenger service needs. The galley is primarily used for food and beverage preparation, emergency exits are crucial for safety but do not include passenger service functions, and the cargo hold is not accessible to passengers during flight. Thus, the overhead positioning of PSUs is vital for effective service delivery and passenger experience.