The crew oxygen system provides oxygen to how many crew masks?

The crew oxygen system provides oxygen to how many crew masks?

• A. Two
• B. Three
• C. Four
• D. Five

Answer: (C)

The main point is how many crew masks the system can supply oxygen to at once. On the A320, the crew oxygen system is designed to support four masks: two at the flight deck for the pilots and two at the two jump seats behind them. This setup allows up to four crew members to receive oxygen simultaneously during an in-flight emergency. The other numbers don’t fit because there aren’t only two or three masks in service, and there isn’t a fifth mask connected to this particular crew oxygen distribution.

The main point is how many crew masks the system can supply oxygen to at once. On the A320, the crew oxygen system is designed to support four masks: two at the flight deck for the pilots and two at the two jump seats behind them. This setup allows up to four crew members to receive oxygen simultaneously during an in-flight emergency. The other numbers don’t fit because there aren’t only two or three masks in service, and there isn’t a fifth mask connected to this particular crew oxygen distribution.