Introduction
Defence aircraft are fitted with breathing equipment to supply oxygen, or a mixture of air and oxygen, to crew and passengers to protect against the effects of hypoxia at cabin altitudes above 10,000 feet. Hypoxia occurs whenever a physiologically inadequate amount of oxygen is available to, or is utilised by, body tissues and the brain. Oxygen systems that satisfy relevant design standards are essential to ensure the safety of aircrew and aircraft occupants. For further information on oxygen systems contact DASA DTS Enquiries.