What is the purpose of the oxygen mask on the aircraft?

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Multiple Choice

What is the purpose of the oxygen mask on the aircraft?

Oxygen masks provide supplemental oxygen to passengers and crew when cabin altitude rises or during oxygen emergencies. Although the cabin is normally pressurized to keep conditions comfortable, a loss of pressurization or a high-altitude situation means the air you breathe can’t supply enough oxygen. The masks deliver additional oxygen so you can breathe at safe levels without becoming hypoxic. They aren’t designed to filter cabin air, provide humidity, or cool the cabin—those functions come from other systems on the aircraft.

Oxygen masks provide supplemental oxygen to passengers and crew when cabin altitude rises or during oxygen emergencies. Although the cabin is normally pressurized to keep conditions comfortable, a loss of pressurization or a high-altitude situation means the air you breathe can’t supply enough oxygen. The masks deliver additional oxygen so you can breathe at safe levels without becoming hypoxic. They aren’t designed to filter cabin air, provide humidity, or cool the cabin—those functions come from other systems on the aircraft.

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