true altitude


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Related to true altitude: Pressure altitude, Density altitude

true altitude

The height of an aircraft as measured from mean sea level.
References in periodicals archive ?
This will be different from true altitude, unless it's a standard day and there's no instrument error.
Comprised of the aforesaid mound of rock and snow, a video of the team sawing off the peak, along with 22 photographs, archival material, and assorted mountain climbing and cutting gear, Zhen's installation comments on ongoing debates about the true altitude and position of the world's highest mountain.
92 properly set, your true altitude might be off by a few hundred feet, but assuming you have an accurate local altimeter setting, the altitude that you're reading should be pretty darn accurate, right?
Corrections applied to the Pole Star altitude bring it to the true altitude of the celestial pole, and thus to the latitude of the observer.
In addition to the incorrect altimeter setting, it's colder than standard, which results in an indicated altitude higher than true altitude.
When colder than standard, the altimeter will indicate higher than true altitude.
Pressure altitude is used to compute density altitude, true altitude, true airspeed (TAS) and other performance data.
Pressure altimeters are calibrated to indicate true altitude (actual height above sea-level) under standard conditions only, and any deviation from standard conditions produces an error in the indicated altitude.
Your indicated altitude is corrected for non-standard pressure, but would also need to be adjusted for non-standard temperature as well as pressure differences between your position and the reporting weather station in order to obtain your true altitude.