equivalent altitude

equivalent altitude

An altitude that would supply the same amount of oxygen to the respiratory system as that provided in the pressurized cabin, through an oxygen mask, or the like. See also cabin attitude.
References in periodicals archive ?
These enclosures create a normobaric environment with an equivalent altitude up to 30,000 feet, while completely removing the risks associated with a hypobaric environment such as sinus injuries and decompression sickness.
New aircraft utilize high-tech, carbon-fiber composite material in place of metals that allow cabin pressure to be set at an equivalent altitude as low as 2000 feet versus 8000 feet today.