During a cabin decompression, which areas automatically deploy oxygen masks?

During a cabin decompression, which areas automatically deploy oxygen masks?

• A. Cabin, lavatories, and galley
• B. Cockpit, cabin, and lavatories
• C. Only cabin and cockpit
• D. Only galley and lavatories

Answer: (A)

During a cabin decompression, the system is designed to provide immediate oxygen to anyone in the cabin by automatically deploying masks in all areas where passengers might be, not just where they are seated. Masks drop from the passenger service units in the cabin and also from areas like the lavatories and the galley, so occupants throughout the cabin have quick access. The cockpit uses its own crew oxygen supply, and the masks there are not part of the automatic drop from the cabin PSUs. So the areas where masks automatically deploy are the cabin, lavatories, and galley.

During a cabin decompression, the system is designed to provide immediate oxygen to anyone in the cabin by automatically deploying masks in all areas where passengers might be, not just where they are seated. Masks drop from the passenger service units in the cabin and also from areas like the lavatories and the galley, so occupants throughout the cabin have quick access. The cockpit uses its own crew oxygen supply, and the masks there are not part of the automatic drop from the cabin PSUs. So the areas where masks automatically deploy are the cabin, lavatories, and galley.