Passenger Hypoxia Protection Utilizing Oxygen Enriched Gas Mixtures

Currently, existing civil aviation StandardDetails address the design and certification of oxygen dispensing devices that utilize oxygen sources supplying at least 99.5% oxygen. This Aerospace Information Report discusses issues relating to the use in the passenger cabin of oxygen enriched breathing gas mixtures having an oxygen content of less than 99.5% and describes one method of showing that passenger oxygen dispensing devices provide suitable hypoxia protection when used with such mixtures.Cross Reference: 14CFRPART25,AIR825,AS8010,AS8025,CSPART25,MIL-PRF-27210