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Introduction & Background
This topic contains only PANS-AIM requirements relevant for a marker. For general PANS-AIM requirements valid for all kind of Radio navigation aids see topic Navaid [NAV] and subordinated pages.
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The figures below show the collocation of a middle marker with a locator.
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Coding Rules for Marker Beacon
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AIXM-5.1_RULE-1A3360
(rule is for all marker beacons not only enroute)
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The geographical distance between the MarkerBeacon.location and the NDB.location used as NavaidEquipment for the same Navaid instance must be less than 100 metres.
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Coding Examples
Coding examples can also be found in the DONLON AIXM 5.1.1 AIP data set filethe AIP Data Set - Specimen (DONLON):
| No. | Description | XPath Expression |
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NAV-EX-06 LLZ-EX-01 GPT-EX-01 NDB-EX-02 MKR-EX-02 MKR-EX-03 | ILS with MM and LOM | //aixm:NavaidTimeSlice [@gml:id ='NAV_OXS'] | //aixm:LocalizerTimeSlice [@gml:id ='LLZ_OXS'] | //aixm:GlidepathTimeSlice [@gml:id ='GPT_OXS'] | //aixm:NDBTimeSlice [@gml:id ='NDB_KL'] | //aixm:MarkerBeaconTimeSlice [@gml:id ='MKR_OM27R'] | //aixm:MarkerBeaconTimeSlice [@gml:id ='MKR_MM27R'] |
NAV-EX-05 NDB-EX-03 MKR-EX-01 | NDB collocated with Marker Beacon | //aixm:NavaidTimeSlice [@gml:id ='NAV_SCN'] | //aixm:NDBTimeSlice [@gml:id ='NDB_SCN'] | //aixm:MarkerBeaconTimeSlice [@gml:id ='NDB_SCN'] |
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