When do you need oxygen on flights above 14,000 ft PA?

When do you need oxygen on flights above 14,000 ft PA?

• A. Only above 14,000 ft
• B. At all times
• C. Only during ascent
• D. Only above 15,000 ft

Answer: (B)

Oxygen must be available and used whenever the cabin pressure altitude is above 12,000 feet. That means once you’re operating at a pressure altitude around 14,000 feet, you’re above the threshold, so you need to be on supplemental oxygen for the entire time you remain above that altitude. The goal is to prevent hypoxia from reduced oxygen in the cabin. This is why the best choice is that oxygen is required at all times during the exposure above that level. It isn’t limited to just during ascent or to a specific part of the flight, and it isn’t only for passengers at higher thresholds (passengers have their own rule, typically above 15,000 feet, but the crew requirement applies as soon as you’re above 12,000 feet).

Oxygen must be available and used whenever the cabin pressure altitude is above 12,000 feet. That means once you’re operating at a pressure altitude around 14,000 feet, you’re above the threshold, so you need to be on supplemental oxygen for the entire time you remain above that altitude. The goal is to prevent hypoxia from reduced oxygen in the cabin.

This is why the best choice is that oxygen is required at all times during the exposure above that level. It isn’t limited to just during ascent or to a specific part of the flight, and it isn’t only for passengers at higher thresholds (passengers have their own rule, typically above 15,000 feet, but the crew requirement applies as soon as you’re above 12,000 feet).