🫡🫡🫡DME arc Distance Measuring Equipment, abbreviated to DME; is most commonly used with a navigation aid (NAVAID) such as a VOR to provide distance to or from the beacon. A DME Arc is a curved route defined by a constant distance from one of these NAVAID's with the arc distance essentially a radius of the circle around the NAVAID. DME Arcs are most commonly found on the Initial approach segment, leading aircraft from the Initial Approach Fix (IAF) onto the Final Approach Course where the Inte