The secret about emergency oxygen masks on planes - they only last this long

Airplane is considered to be the safest means of travel and millions of passengers use it every day. But travelling by plane comes with its own set of risks.

At the beginning of each flight, cabin crew explain to passengers what they should do in case of emergency. In-flight instructions from flight attendants include, for example, that you must fasten your seatbelts and have your window shades open. Also, the safety instructions include how to use the oxygen masks when there is a sudden loss of pressure in the cockpit. However, one thing you do not know about the masks and no one tells us is that they only have oxygen for 15 minutes.


If this period seems little to you then you should know that you do not need to worry. In fact, this time is more than enough. And there is an explanation for that. 

Firstly, you must think that the oxygen masks drop off when the cabin loses pressure, which means that the plane loses altitude. In such a situation, the pilot will respond by wearing the mask and piloting the aircraft to an altitude of less than 10,000 feet, at which passengers can breathe normally without additional evacuation. This rapid descent of the plane usually takes less than 15 minutes, which means that the masks have enough air for each passenger until they need to be taken out.


In any case you should always trust the crew on the plane and follow its instructions as they know what to do in case of emergency.