Where are customer oxygen masks located in a 737?

Customer oxygen masks on a Boeing 737 are located in the Passenger Service Unit (PSU), which is situated above the seating area. The PSU contains various controls and equipment pertinent to passenger safety and comfort, including the oxygen masks. These masks are designed to drop down in the event of a loss of cabin pressure, allowing passengers to access oxygen quickly.

The overhead compartments primarily hold luggage and personal items, and while there might be emergency equipment stowed in some compartments, this is not where the oxygen masks are located. Masks are not found beside the exits as a standard feature, nor are they stored under the seats, where they would be less accessible in an emergency situation. The design of the PSU allows for effective deployment and easy access to the masks when needed, which is critical for passenger safety.