...
In addition navaids published in ENR 4.1 Radio navigation aids — en-route will be used enroute used 'ENROUTE' per definition. On the other hand navaids published in AD 2.19/AD 3.18 Radio navigation and landing aids are per definition of terminal of 'TERMINAL' usage.
Navaid Designator & Name
...
The Navaid.name is used for the long name given to the composite navaid. For the name of the navaid maximum 60 upper case alpha and/or numerical characters and also some special characters may be used.
Aerodrome Served
Navaids of type VOR, DME, NDB, TACAN and Marker with purpose Aerodrome (A or AE) will be assigned to one (or more) Airport/Heliport.
For instance, a VOR that is serving two different approaches for two different Aerodromes.
This association is established via the Navaid.servedAirport property, i.e. not the individual navaid equipment is related to the airport/heliport but the whole navaid system (e.g. the VOR/DME and not the VOR and the DME).
ILS and MLS are associated to a certain runway/FATO direction of an airport/heliport (see topics Localizer, Glidepath and MLS).
Navaid Position
Coding Rules for Basic Data for Navaid
...