Clearance Distance Measuring Equipment Stability 
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.
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. Flying at MSA guarantees at least 1,000 feet of obstacle clearance. This will give you a stabilized, manageable descent to the runway.
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