The Oxygen Masks Have A Time Limit
The oxygen masks on a plane will deploy when the cabin pressure falls below a certain point, but more often than not, that point never comes. In the event that it does, however, how long would it allow you to breathe?
There are around 12 to 15 minutes of oxygen in those masks. It doesn’t seem like a lot of time, but it is. If you ever find yourself in a situation that warrants the use of these masks, just try to relax and breathe. The pilot is working to get the plane to a safe altitude where you will be able to breathe without them.