2. Your Oxygen Mask Only Lasts So Long
We’ve all heard the drill. In the event of a decompression, an oxygen mask will automatically drop down and dangle in front of you. Just don’t expect the flow to last more than about 15 minutes. Relax, that’s usually more than enough time to get down to an altitude of 10,000 feet where supplemental oxygen isn’t required. The flight crew, however, have their own oxygen supplies that last considerably longer, just in case 15 minutes isn’t enough. The cabin crew use portable O2 bottles so they can move about to help passengers.