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Altitude: Difference between revisions
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*QNE: Elevation of the airfield above [[AMSL]]. | *QNE: Elevation of the airfield above [[AMSL]]. | ||
*QFF: Atmospheric pressure calculated towards [[AMSL]] under Standard conditions, this code is not used. | *QFF: Atmospheric pressure calculated towards [[AMSL]] under Standard conditions, this code is not used. | ||
*ISA-1: International Standard Atmosphere: Atmospheric model of various layers of the earth atmosphere. Each layer has a temperature, pressure, viscosity and density | *ISA-1: International Standard Atmosphere: Atmospheric model of various layers of the earth atmosphere. Each layer has a temperature, pressure, viscosity and density. It is based on an average model of the earth atmosphere. Publication ISO 2533:1975. There is a US model that is synchronised with this standard but is reaching higher. | ||
*ISA-2: ICAO Standard Atmosphere: Same as ISA-1 but reaching higher and with slightly different values. In aviation this is the standard to use. Publication Doc 7488-CD. | *ISA-2: ICAO Standard Atmosphere: Same as ISA-1 but reaching higher and with slightly different values. In aviation this is the standard to use. Publication Doc 7488-CD. | ||
*Attitude: Most often the Pitch of an aircraft, the angle of the nose in reference to the ground, but there are other definitions. | *Attitude: Most often the Pitch of an aircraft, the angle of the nose in reference to the ground, but there are other definitions. | ||