OrganisationAuthority StandardInstrumentDeparture Meteorology AerialRefuelling StandardInstrumentArrival AircraftCharacteristic FlightCharacteristic DirectFlightSegment DirectFlightClass DirectFlight SignificantPoint RoutePortion AirspaceBorderCrossing Airspace FlightConditionCircumstance FlightRestrictionLevel AirportHeliport FlightConditionElementChoice FlightConditionElement FlightConditionCombination

Diagram - Flight Restrictions / Flight Restrictions Conditions

Found in AIXM_v.5.1.1.AIXM.AIXM Features.Routes.Flight restrictions package.

2 - Flight restrictions - conditions.png