Which statement best describes the DME distance notation IVZE on an ILS chart?

Which statement best describes the DME distance notation IVZE on an ILS chart?

• A. It marks the DME distance from KOENN to the runway
• B. It marks the DME distance from KOENN to the VOR
• C. It marks the DME distance from the localizer to KOENN
• D. It marks the DME distance from the localizer (IVZE) to KOENN to identify KOENN

Answer: (D)

On an ILS chart, DME distance annotations indicate how far a fix is from the DME facility that’s paired with the transmitter you’re using. When the DME is co-located with the localizer, that distance is measured from the localizer transmitter itself. In this case, IVZE refers to the localizer’s DME, and KOENN is a defined fix on the approach. So the notation shows how far KOENN lies from the localizer (IVZE), effectively identifying KOENN by its distance from that localizer. It isn’t about distance from a VOR or from the runway itself.

On an ILS chart, DME distance annotations indicate how far a fix is from the DME facility that’s paired with the transmitter you’re using. When the DME is co-located with the localizer, that distance is measured from the localizer transmitter itself. In this case, IVZE refers to the localizer’s DME, and KOENN is a defined fix on the approach. So the notation shows how far KOENN lies from the localizer (IVZE), effectively identifying KOENN by its distance from that localizer. It isn’t about distance from a VOR or from the runway itself.