Hello and how do you do everyone? In this clip, I talk about depressurisation and why we need to put on our oxygen masks if there is a loss of cabin pressure. You listen to the airline safety video every time you fly and have heard it many times. The higher you climb, the air has less oxygen as it is thinner than at sea level. Aircraft structures are built to be pressurised so that they present passengers and crew with sufficient breathable air during the flight. A loss of this protective feature such as having a door or window blow out, will depressurise the cabin and you would suddenly find yourself gasping for oxygen as the aircraft cabin equalised to that of whatever altitude you are flying. That is why oxygen must be provided in such an emergency. The pilots then have to make a rapid descent to a lower altitude where there will be no requirement for oxygen as it is limited usually to about 15 minutes to get down before it runs out.
Have a listen and hope it makes sense. Chi Di Gin! Later✈✈✈✈

Filming in flight was done by ‪@justplanes‬ and is copyright protected.