Localizer course symbol code#
The equency attribute is used to code the value of the frequency of the localizer. For details about the encoding including rules see the topic Magnetic Variation. Magnetic Variationįor ILS, PANS-AIM Appendix 1 requires the magnetic variation to be provided. In case naming conventions are applied they should be consistent for all data provided by the same data provider. However, local naming conventions may be applied (e.g. In general, neither the Navaid nor the Localizer nor the Glidepath will have a name. The Navaid shall carry the same designator as the Localizer. If yes, it shall be identical to the designator of the localizer. In general, the Glidepath will not have a value for the designator attribute. The Localizer will have a designator coded. The coding guidelines provided here are aligned with forward/backward conversion rules contained in the AIXM-541 Change Proposal. Where only one locator is used as a supplement to the ILS, preference should be given to location at the site of the outer marker beacon.Ī change proposal ( AIXM-541) for the next AIXM 5.2 version has been approved by the AIXM Change Control Board, where a dditional courseQuality, integrityLevel and signalPerformance attributes are replicated from Navaid into the Localizer and Glidepath classes. They should be located at the sites of the outer and middle marker beacons. For general PANS-AIM requirements valid for all kind of Radio navigation aids, see topic Navaid and subordinated pages.Īccording to ICAO Annex 10, Volume I, the ILS shall comprise the following basic components:Ī) VHF localizer equipment (for horizontal guidance),ī) UHF glide path equipment (for vertical guidance),Ĭ) VHF marker beacons, or distance measuring equipment (DME) (for range information).Ī standalone instrument approach installation without an associated glidepath is a Localizer system (also called Localizer only or Localizer without GP, etc.)Īlso locators (NDB) may be used as a supplement to the ILS/localizer system. This topic contains only those PANS-AIM requirements, which are relevant for an Instrument Landing System (ILS) and a Localizer only system.
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