UnplannedHolding


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

A specific holding procedure requested at an en-route fix on airway or route radials, bearings, or courses.

Source: EUROCONTROL-FAA AIXM v.5.1,