MinimumSectorAltitude


             urn:aero:airm:1.0.0:ConceptualModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:MinimumSectorAltitude

The lowest altitude which may be used which will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an area contained within a sector of a circle of 46 km (25 NM) radius centred on a radio aid to navigation.

Source: ICAO,
Abbreviations: MSA

Related:
is centred on SignificantPoint
is established in the area around Aerodrome
is established in the area around Heliport