Order 7110.65P, Air Traffic Control, with changes

Pilot/Controller Glossary 2/19/04downburst often causes widespread damage. Damagingwinds, lasting 5 to 30 minutes, could reach speedsas high as 120 knots.DOWNWIND LEG−(See TRAFFIC PATTERN.)DP−(See INSTRUMENT DEPARTUREPROCEDURE.)DRAG CHUTE− A parachute device installed oncertain aircraft which is deployed on landing roll toassist in deceleration of the aircraft.DSP−(See DEPARTURE SEQUENCING PROGRAM.)DT−(See DELAY TIME.)DUE REGARD− A phase of flight wherein anaircraft commander of a State-operated aircraftassumes responsibility to separate his/her aircraftfrom all other aircraft.(See also FAAO 7110.65, Para 1−2−1, WORDMEANINGS.)DUTY RUNWAY−(See RUNWAY IN USE/ACTIVE RUNWAY/DUTYRUNWAY.)DVA−(See DIVERSE VECTOR AREA.)DVFR−(See DEFENSE VISUAL FLIGHT RULES.)DVFR FLIGHT PLAN− A flight plan filed for a VFRaircraft which intends to operate in airspace withinwhich the ready identification, location, and controlof aircraft are required in the interest of nationalsecurity.DVRSN−(See DIVERSION.)DYNAMIC− Continuous review, evaluation, andchange to meet demands.DYNAMIC RESTRICTIONS− Those restrictionsimposed by the local facility on an “as needed” basisto manage unpredictable fluctuations in traffic demands.PCG D−4