DME Paired with ILS Channels
A DME that is frequency paired with an ILS supplements or replaces the range information from markers/locators.
The DME ranges are zero referenced to the ILS runway threshold.
The DME is protected only within the ILS localizer service area up to 25 000 ft. When necessary and notified, the DME is also used for published ‘SIDs’ and ‘STARs’. In such cases the DME coverage is increased. The use of a DME outside the stated limits may give rise to errors.
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