Pilot/Controller Glossary

4/3/14

PCG D−4

DRAG CHUTE− A parachute device installed on

certain aircraft which is deployed on landing roll to

assist in deceleration of the aircraft.
DSP−

(See DEPARTURE SEQUENCING PROGRAM.)

DT−

(See DELAY TIME.)

DTAS−

(See DIGITAL TERMINAL AUTOMATION

SYSTEM.)

DUE REGARD− A phase of flight wherein an

aircraft commander of a State-operated aircraft

assumes responsibility to separate his/her aircraft

from all other aircraft.

(See also FAAO JO 7110.65, Para 1

−

2

−

1, WORD

MEANINGS.)

DUTY RUNWAY−

(See RUNWAY IN USE/ACTIVE RUNWAY/DUTY

RUNWAY.)

DVA−

(See DIVERSE VECTOR AREA.)

DVFR−

(See DEFENSE VISUAL FLIGHT RULES.)

DVFR FLIGHT PLAN− A flight plan filed for a VFR

aircraft which intends to operate in airspace within

which the ready identification, location, and control

of aircraft are required in the interest of national

security.

DVRSN−

(See DIVERSION.)

DYNAMIC− Continuous review, evaluation, and

change to meet demands.

DYNAMIC RESTRICTIONS− Those restrictions

imposed by the local facility on an “as needed” basis

to manage unpredictable fluctuations in traffic

demands.