Where is the passenger oxygen system typically located on the 737-700?

• A. Along the cabin ceiling with masks that deploy automatically when needed.
• B. Under passenger seats.
• C. In the cockpit overhead area.
• D. In cargo compartments.

Answer: (A)

The passenger oxygen system on a 737-700 is located along the cabin ceiling, with oxygen masks stored in compartments above the seats. These masks drop down and provide oxygen automatically when the system is activated (such as during depressurization) so passengers can breathe until the airplane descends to a breathable altitude. The crew have their own oxygen supply in the cockpit overhead area, separate from the passenger system, and the oxygen is not stored under seats or in cargo compartments. This ceiling-mounted arrangement with automatic deployment is designed for quick, universal access for everyone onboard.