Altitude

urn:aero:airm:1.0.0:ConceptualModel:Subjects:Common:Geometry:Altitude

The vertical distance of a level, a point or an object considered as a point, measured from mean sea level (MSL).

Source: ICAO Annex 1,ICAO Annex 10,ICAO Annex 11,ICAO Annex 2,ICAO Annex 3,ICAO Annex 4,
Abbreviations: ALT


Related:
can be expressed in FlightLevel
is measured from MeanSeaLevel