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In case the VOR is assigned to an AirportHeliport (see topic Basic Data for Navaid), the magnetic variation of the VOR has to coincide with that of the related airport/heliport.
| Info | ||
|---|---|---|
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| If the zero Bearing is True North, the station declination is 0 or not applicable? |
In some AIPs, also the date (year) when the station declination was measured is published. Unlike for magnetic variation there is no dedicated attribute for station declination contained in AIXM 5. Corresponding information can only be recorded using a Note.
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For more details see topic Landing Systems & Navaid Collocation.
Coding
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Coding Examples
Coding examples can also be found in the DONLON AIXM 5.1.1 AIP data set file AIP Data Set - Specimen (DONLON):
| No. | Description | XPath Expression |
|---|---|---|
NAV-EX-01 VOR-EX-01 DME-EX-01 | VOR/DME | //aixm:NavaidTimeSlice [@gml:id ='NAV_BOR'] | //aixm:VORTimeSlice [@gml:id ='VOR_BOR'] | //aixm:DMETimeSlice [@gml:id ='DME_BOR'] |
NAV-EX-02 VOR-EX-02 | VOR | //aixm:NavaidTimeSlice [@gml:id ='NAV_EKO'] | //aixm:VORTimeSlice [@gml:id ='NAV_EKO'] |
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