On flights at 8,000 feet, passengers feel the pain; cabin pressure often too low
(Newser) -
Airline passengers routinely suffer from altitude sickness, and aircraft cabins are insufficiently pressurized to prevent it, a new study concludes. Altitudes of 8,000 feet above sea level result in 4% lower oxygen saturation in the blood, researchers found; cabins are often pressurized at the equivalent of 8,000 feet.