← All explained questions · Navigation and Sectional Charts

What distance does distance measuring equipment (DME) display?

Choices

  • Slant-range distance to the station in nautical milescorrect

    DME reads slant range — the straight-line distance from the aircraft to the station.

  • Horizontal distance over the ground in statute miles

    DME measures slant range, not horizontal ground distance, and it reads in nautical miles.

  • The remaining fuel range of the aircraft

    DME measures distance to a ground station, not fuel range.

  • Distance to the destination airport regardless of stations

    DME requires a DME-equipped ground station such as a VOR/DME or VORTAC.

Why

DME displays slant-range distance — the straight-line distance from the aircraft to a DME-equipped station — in nautical miles, so directly overhead the station it reads approximately the height above it.

FAA source: PHAK Ch. 16browse the reference library →

This is taught in VOR, GPS and Area Navigation study the lessons free, then practice with grading and mastery tracking.

Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.

What distance does distance measuring equipment (DME) display? · PPL Free Ground School