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In addition, PANS-AIM requires, for ILS Localiser and NDB, the accuracy to be provided. For both a accuracy of 1 degree is required. In AIXM, the magneticVariationAccuracy attribute is used to code that information.
| Note | ||
|---|---|---|
| ||
| For some Navaids (viz. VOR, ILS and MLS), PANS-AIM requires a station declination instead of a local magnetic variation (see corresponding specialised navaid equipment topic for details). |
Coding Rules for Magnetic Variation for Navaid
| Identifier | Data Encoding Rule | Justification | Data Verification Rule (UID) | Remarks |
|---|---|---|---|---|
| NAV-301 | For VOR or TACAN having a specified magneticVariation and dateMagnteicVariation, these values have to coincide with those of the AirportHeliport related to the Navaid the VOR or TACAN is a NavaidEquipment of. | EAD | TBD | |
| NAV-302 | If magneticVariation is specified, then dateMagnteicVariation is mandatory. | EAD / Data consistency | TBD | |
| NAV-303 | If magneticVariation is specified, then magneticVariationAccuracy should be provided. | PANS-AIM | TBD |
Coding Examples
See topic Navaid [NAV] and subordinated pages.