The inside pressure equalizes to what it is outside, and the people on board would have to breathe the oxygen-scarce air at such low pressures. If other systems on the aircraft are working fine ...

has brought the high-altitude, low-oxygen conditions of Mount Fuji to ... a high-altitude environment without changing the air pressure. According to Kazushige Goto, a professor at Ritsumeikan ...

At first, fliers coped by filling tanks with pressurized oxygen and inhaling the ... To maintain the pressure in the cabin equal to that at low altitude, even while the airplane is at 30,000 ...