Oxygen

Question 1

What are the independent oxygen systems for the Boeing 777?

Answer 1

• Flight crew
• Passenger
• Portable bottles for first aid use and walk around units.

Question 2

Where is the oxygen relief port located?

Answer 2

Left side of the aircraft. (Just above the nose gear)

Question 3

What happens when the flight crew oxygen mask is removed from the stowage compartment?

Answer 3

• Initiates oxygen flow
• Momentarily displays oxygen flow
• Selects the mask microphone
• Deselects the boom and handheld microphone

Question 4

When stowing the crew oxygen mask, what happens after closing the left oxygen panel door and then pushing and releasing the TEST/RESET switch?

Answer 4

• Shuts off oxygen to the mask
• Reselects the boom and handheld mics

Question 5

When do the passenger oxygen mask automatically deploy?

Answer 5

When the cabin altitude exceeds approximately 13,500’

Question 6

How many minutes do the passenger oxygen system supply oxygen?

Answer 6

Approximately 12 minutes (777-200ER)