Search - "Cabin depressurisation"

Cabin depressurisation: Sudden and rapid depressurisation of the aircraft cabin as a result of structural failure, pressurisation system failure, or deliberate act of the crew. Air pressure reduces with increase in altitude and therefore the amount of oxygen in any given volume of air also reduces with increase in altitude. Furthermore, the reduction in pressure impedes the ability of oxygen to pass across lung tissues and into the human bloodstream. The condition whereby the concentration of useful oxygen in the bloodstream is reduced because of a decrease ...