34. How Long do the Oxygen Masks Last?
You’ve likely heard the precautionary speech about oxygen masks so many times you could recite it by now. Although it’s rare that a plane would find itself in a situation that would necessitate the use of those drop-down masks, you might have wondered how long they actually work.
As it turns out, the masks usually supply about 15 minutes worth of oxygen. That may not sound like a lot but take a deep breath. During that time, the pilot is fervently working to descend to an altitude that will equalize the cabin pressure and make it easier to breathe.