How many oxygen masks are located in the PSU per seat row?

In the Passenger Service Unit (PSU), there are typically two oxygen masks located for each seat row. This configuration allows for easier access for passengers seated in that row during an emergency situation. The design ensures that both the aisle and window seat passengers can quickly reach a mask, enhancing safety and compliance with aviation regulations.

The availability of two masks per row addresses the likelihood that not all passengers will be able to assist each other and ensures that both passengers can independently access emergency oxygen if necessary. This setup is a standard safety feature in modern aircraft to maximize passenger safety during a potential in-flight emergency.