What is the purpose of the oxygen systems on the A320 for crew and passengers?

• A. Deliver oxygen to crew and passengers in case of cabin depressurization or smoke/fumes; crew have quick-don masks for immediate use.
• B. Only pilots get oxygen.
• C. Oxygen is optional.
• D. Oxygen is only for high altitude.

Answer: (A)

Oxygen systems on the A320 exist to keep people breathing safely when the cabin can’t maintain breathable pressure, such as during depressurization or when smoke/fumes are present. They’re designed to protect everyone onboard, not just the pilots. Passenger oxygen masks automatically drop from overhead panels so passengers can begin breathing oxygen immediately, while the cockpit crew have quick-don masks that can be donned rapidly to preserve the pilots’ ability to control the aircraft and manage the situation. This setup ensures safety for both crew and passengers and enables effective response to emergencies. It’s not optional and it’s not limited to pilots; the system is there to provide oxygen during depressurization and smoke events, which can occur at any altitude.