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A decentralized gaseous system often called a pulse oxygen system, is used on some modern airliners such as the Boeing 787. These systems have a small high-pressure gaseous cylinder to support the number of masks located within the box. These systems differ from the other two in that they don't require an accumulator bag as they don't provide continuous oxygen, rather they only provide small pulses of oxygen upon inhalation by the user.
Did You Know That Airplane Masks Are Not Connected To Any Oxygen Source?
A decentralized gaseous system often called a pulse oxygen system, is used on some modern airliners such as the Boeing 787. These systems have a small high-pressure gaseous cylinder to support the number of masks located within the box. These systems differ from the other two in that they don't require an accumulator bag as they don't provide continuous oxygen, rather they only provide small pulses of oxygen upon inhalation by the user.