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Altitude: Difference between revisions
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==Indicated altitude== | ==Indicated altitude== | ||
The [[altimeter]] reading. The altimeter can be set on '''three''' possible references | The [[altimeter]] reading. The altimeter can be set on '''three''' possible references | ||
#the "barometric pressure adjusted to sea level" (QNH) resulting in indicated altitude [[ | #the "barometric pressure adjusted to sea level" ([[#QNH]]) resulting in indicated altitude above [[Mean Sea Level]] for a certain region during current weather conditions. This is used below a specified altitude and it provides a good reference with the height maps of the area. While on the airfield the altimeter would read the indicated altitude [[AMSL]] of the airfield. | ||
#height above the airfield (QFE). While on the runway the indicated altitude would read zero. Near the airfield the indicated altitude would be [[above ground level]]. | #height above the airfield (QFE). While on the runway the indicated altitude would read zero. Near the airfield the indicated altitude would be [[above ground level]]. | ||
#Standard pressure (29.92" Hg or 1013.25 millibars) resulting in the Pressure Altitude. This is used above a specified altitude since this setting provides layers in the airspace that are the same for each aircraft, across regions and continents. | #Standard pressure (29.92" Hg or 1013.25 millibars) resulting in the Pressure Altitude. This is used above a specified altitude since this setting provides layers in the airspace that are the same for each aircraft, across regions and continents. | ||