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| Note | ||
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| The Navaid feature can be used as SignificantPoint (see also topic SignificantPoint [SPN](Overview)), whereas a navaid equipment (e.g. VOR feature) can not. Hence, if a particular navaid equipment of a navaid shall be available as its own SignificantPoint it has to be encoded as separate Navaid feature. |
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However, in case there is a need only to use only the TACAN and/or the VOR as SignificantPoint, the corresponding navaid equipment of the VORTAC as the coded as separate Navaid feature.
(For example; the TACAN may also be used military routes (without the VOR). The VOR and the TACAN are not at the same location, but for the VORTAC Navaid feature the VOR location is coded).
The second case shows a Navaid of type ILS which is composed of five navaid equipment features. A Localizer, a Glidepath, a NDB (locator collocated with the outer marker) and two MarkerBeacons, one of it an outer marker and the other one a middle marker.
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