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Aviation Alerts and Advisories

Service Advisory 20132 Rev B: Distance To DME


Updated Affected Software Versions


All GI 275 products with software versions 2.21 and earlier, with an HSI page and interfaced to a GTN or GNS series unit are affected.


When the localizer is tuned and a GPS flight plan is loaded, the GI 275 provides a distance to the tuned localizer station. It does not provide a distance to the DME station.


For DME distance, use a receiver capable of providing DME station distances. If the aircraft is not equipped with a DME receiver, use the GPS waypoint distance provided by the navigator.


The distance to the tuned localizer station will be removed in a future software release.

Service Advisory 20132 Rev B