Acronyms: D

Acronym	Name
D	Controlling Dimension
D-ATIS	Digital - Automatic Terminal Information Service
D-ATIS	Digital automatic terminal information service
D-OTIS	Data link operational terminal service
D-TAXI	Data link taxi clearance delivery
D-TOC	Digital transfer of communications
D8PSK	Differential 8-phase-shift keying
DA	Decision Altitude
DA	Decision Altitude/Decision Height
DA	Descent advisor
DA	Design altitude
DA	Design authority
DA	Digital-to-analog
DA	Direct Access
DA(H)	Design altitude (height)
DA/H	Decision Altitude/Height
DABBS	DITCO Automated Bulletin Board System
DABS	Discrete addressable beacon system
DAC	Digital-to-analog converters
DACS	Digital Aeronautical Chart Supplement
DADC	Digital air data computer
DADS	Digital Aeronautical Database System
DADS	Digital air data system
DAE	Defense acquisition executive (U.S. Army)
DAFIS	Departmental Accounting and Financial Information System
DAIR	Direct Altitude and Identity Readout
DAISS	Digital airborne intercommunication switching system
DALR	Digital Audio Legal Recorder
DAP	Digital service access product
DAP	Direct action penetration
DAP	Downlink aircraft parameter
DAP	Download of aircraft parameter
DAR	Data access recorder
DAR	Designated Agency Representative
DARC	Direct access radar channel
DARP	Dynamic aircraft route planning
DARPA	Defense Advanced Research Projects Agency (U.S.)
DAS	Designated alteration station
DAS	Digital audio subcommittee
DAS	Distributed aperture system
DASI	Digital Altimeter Setting Indicator
DASR	Digital Airport Surveillance Radar
DASS	Defensive aids sub-system
DB	Database
DBA	Database Administrator
DBCRC	Defense Base Closure and Realignment Commission
DBE	Disadvantaged Business Enterprise
DBI	Downlink block identifier
DBMS	Data Base Management System
DBRITE	Digital Bright Radar Indicator Tower Equipment
DBS	Direct broadcast satellite
DBU	Database unit
DBU	Dial backup
DC	Data communications
DC	Direct current
DC	Disconnect confirm
DCA	Defense Communications Agency
DCA	Department of Civil Aviation (Thailand)
DCA	Ronald Reagan Washington National Airport
DCAA	Dual Call, Automatic Answer Device
DCAS	Digital control audio system
DCC	Direct Channel Complex
DCCU	Data Communications Control Unit
DCD	Double channel duplex
DCE	Data communications equipment
DCGF	Data conversion gateway function
DCL	Departure clearance (European)
DCM	Digital coherent mute
DCMF	Data communication management function
DCMS	Data communication management system
DCN	Document/drawing/design change notice
DCP	Data Collection Package
DCP	Data communication process
DCP	Display control panel
DCS	Double channel simplex
DCU	Data concentration unit
DCV	Directional control valve
DD	Data delivery
DD	Data distribution
DDA	Dedicated Digital Access
DDA	Digital differential analyzer
DDD	Direct Distance Dialing
DDD	Dual disk drive
DDL	Digital data link
DDM	Difference in depth of modulation
DDP	Declarations of design and performance
DDR	Double data rate
DDR	Draft document review
DDRMI	Digital distance radio magnetic indicator
DDS	Digital Data Service
DDS	Direct digital synthesizer
DDT	Downlink data transfer
DDU	Data distribution unit
DEA	Drug Enforcement Agency
DEDS	Data Entry and Display System
DEI&A	Diversity, Equity, Inclusion & Accessibility
DEIS	Draft Environmental Impact Statement
DEM	Digital Elevation Model
DEP	Departure
DER	Departure End of Runway

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Acronyms: D