Pilot Institute

JANUARY 14, 2025

DME (Distance Measuring Equipment) calculates the slant range distance to the runway using radio frequencies. Modern IFR-certified GPS can also substitute for DME, providing precise distance information as outlined in AIM 1-2-3. This is provided by Marker Beacons, DME, and GPS.

Approach 98

Approach Descent Runway Instrument Landing System 98

Air Facts

MAY 7, 2025

Instrument flights were conducted between these navigation beacons along airways (often called highways in the sky) and a flights progress was measured by crossing intersections (beams from other navigation aids), or in some cases by DME (Distance Measuring Equipment) signals sent out from some VOR stations.

Weight-Shift-Control 52

Weight-Shift-Control VOR Runway Distance Measuring Equipment 52

Pilot Institute

FEBRUARY 22, 2025

However, if you look at the requirements section, youll find that you also need Distance Measuring Equipment (DME) if youre entering from a particular waypoint. This will give you a stabilized, manageable descent to the runway. The notes section tells you what to do in certain conditions.

Approach 52

Approach Descent Runway Final Approach 52