Glossary - D
Data link weather service. See broadcast weather service.
Deceleration segment. A planned portion of a descent designed to permit the aircraft to slow to meet a terminal area speed restriction, crossing restriction, or other speed restriction.
Desired track. The great circle course computed by the FMS/RNAV, it goes from the past waypoint to the next (active) waypoint.
Distance measuring equipment (DME). Line-of-sight limited airborne equipment (transceiver) using paired pulse replies from ground-based transponder to determine slant range distance by time between airborne transmission of pulses and return of pulses from the ground transponder.
DME. See distance measuring equipment.
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