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 ?
If you're really hard over on having the air data, Levil Technology has the iLevil 2 AW which, at $1395, has pitot-static input and can display indicated airspeed and pressure altitude.
Baro-aiding uses pressure altitude corrected for local barometric pressure, not GPS altitude, to provide a glidepath.
The arguments against allowing a portable device to be used to comply with the 2020 mandate were based on fears related to performance (in part) and other factors like permanent antennas, pressure altitude input, having more than one source for squawk code, control panels and automated integrity checking.
1000 feet, cuz the altimeter reads pressure altitude already.
Pressure altitude is used to compute density altitude, true altitude, true airspeed (TAS) and other performance data.
The encoder can feed pressure altitude data to other onboard systems over the STX165's serial databus.
We Ye not sure about the legalities of plumbed-in portables in certified aircraft, but the iLevil-AW will provide uncalibrated indicated airspeed and pressure altitude.
According to the Pilot's Handbook of Aeronautical Knowledge (PHAK), FAA-H-8083-25A, "Proper accounting of pressure altitude and temperature is mandatory for accurate prediction of takeoff roll distance.
Since mandate-compliant solutions require a single point-of-entry pressure altitude input, SkyVision developed a unique interface through the $199 TransMonSPE.
211 says that pilots need oxygen if between 12,500 and 14,000 feet cabin pressure altitude longer than 30 minutes and any time above 14,000 feet.