Emergency oxygen system

On most pressurized aircraft, if cabin pressurization is lost when the aircraft is flying at an altitude above 4,267 m (14,000 feet), compartments containing the oxygen masks will open automatically, either above or in front of the passenger and crew seats, and the oxygen masks will drop down in front of the passenger.

[citation needed] The bag is attached to a tube, connected to the oxygen source in the compartment, allowing for it to drop down and hang in front of the passengers.

To operate on all aircraft, they must be pulled sharply toward the user to un-clip the flow pin and start the process of transporting the oxygen to the passenger.

While the masks are being used, passengers are not allowed to leave their seat for any reason until it is safe to breathe without the emergency oxygen.

[clarification needed][1] There are currently three systems that are typically found on aircraft: Combustion is the exothermic chemical reaction between oxygen and a fuel, producing a flame and smoke.