pressure altitude


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Related to pressure altitude: Density altitude

pressure altitude

[′presh·ər ‚al·tə‚tüd]
(meteorology)
The height above sea level at which the existing atmospheric pressure would be duplicated in the standard atmosphere; atmospheric pressure expressed as height according to a standard scale.

pressure altitude

An atmospheric pressure expressed in terms of altitude which corresponds to that pressure in the standard atmosphere (ICAO). It is the height of an aircraft as measured from an assumed sea level atmospheric pressure level of 1013.2 hectopascals (hPa) or 29.92 of mercury (Hg). This is used to indicate flight levels and as a common setting for the cruising level. When aircraft are flying at a given pressure altitude, their height above mean sea level is not constant; it varies depending on the variation of pressure prevalent at the height from the standard pressure. See absolute altimeter.
References in periodicals archive ?
While the pilots knew the OAT and the pressure altitude at the pad, their (higher-hotter) calculations were based on a no-wind condition.
The GTX 327 is a Mode-C transponder that displays flight time and current pressure altitude, and its solid-state design requires no warm-up time, reduces power output and lowers heat emissions.
Its 'sonic seasoning' report, produced with Oxford University, suggests some tracks in the skies can make meals appear up to 10% more sweet or salty, given the effect of cabin pressure altitude on our taste buds.