|
Contraction
|
Definition
|
Usage
|
|
D
|
danger area
|
ICAO
|
|
DA
|
decision altitude
|
ICAO
|
|
DA
|
departure approved
|
ATC
|
|
DAAR
|
deviation approved as requested
|
ATC
|
|
DABRK
|
daybreak
|
NWS
|
|
DAE
|
district airport engineer
|
GEN
|
|
DAIRE
|
direct altitude and identification readout
equipment
|
GEN
|
|
DALGT
|
daylight
|
GEN
|
|
DAP
|
do all possible
|
GEN
|
|
DAPD
|
descend at pilot’s discretion
|
ATC
|
|
DASI
|
digital altimeter setting indicator
|
GEN
|
|
DATIS
|
Data link automatic terminal information
service
|
ICAO
|
|
DB
|
decibel
|
GEN
|
|
DB
|
describe
|
GEN
|
|
DBA
|
doing business as
|
GEN
|
|
DBASI
|
digital barometer altimeter setting
indicator
|
GEN
|
|
DBL
|
double
|
GEN
|
|
DBTF
|
doubtful
|
GEN
|
|
DC
|
direct current
|
GEN
|
|
DCA
|
Defense Communications Agency
|
GEN
|
|
DCAVU
|
clear or scattered clouds and visibility
greater than ten, remainder of report
missing (weather reports only)
|
NWS
|
|
DCD
|
double channel duplex
|
ICAO
|
|
DCF
|
deputy chief
|
GEN
|
|
DCKG
|
docking
|
ICAO
|
|
DCLRT
|
decelerate
|
ATC
|
|
DCM
|
defense combat maneuvers
|
ATC
|
|
DCMSN
|
decommission
|
GEN
|
|
DCMT
|
document
|
GEN
|
|
DCPC
|
Direct controllerpilot communications
|
ICAO
|
|
DCR
|
decrease
|
GEN
|
|
DCRZ
|
descend to and cruise
|
ATC
|
|
DCS
|
defense communications system
|
GEN
|
|
DCS
|
double channel simplex
|
GEN
|
|
DCT
|
direct
|
ICAO
|
|
DDM
|
difference in depth of modulation
|
GEN
|
|
DE
|
From (used to precede the call sign of the
calling station)
|
ICAO
|
|
DECCO
|
Defense Commercial Communications Office
|
GEN
|
|
DEF
|
defense
|
GEN
|
|
DEFCON
|
Defense Readiness Conditions
|
GEN
|
|
DEG
|
degree
|
ICAO
|
|
DELPHO
|
deliver by telephone
|
GEN
|
|
DEMOL
|
demolition
|
GEN
|
|
DENEB
|
fog dispersal operations
|
ICAO
|
|
DEP
|
depart
|
ATC
|
|
DEP
|
departure
|
ICAO
|
|
DEPT
|
department
|
GEN
|
|
DES
|
descend to or descending to
|
ICAO
|
|
DESTN
|
destination
|
GEN
|
|
DETRESFA
|
Distress Phase Code (Alerting Service)
|
ATC
|
|
DEV
|
deviation
|
ATC
|
|
DEW
|
distant early warning
|
GEN
|
|
DEWIZ
|
distant early warning identification zone
|
GEN
|
|
DFCLT
|
difficult
|
GEN
|
|
DFDR
|
Digital flight data recorder
|
ICAO
|
|
DFL
|
daily flight log
|
GEN
|
|
DFNT
|
definite
|
GEN
|
|
DFRS
|
differs
|
GEN
|
|
DFTI
|
distance from touchdown indicator
|
GEN
|
|
DFUS
|
diffuse
|
GEN
|
|
DGCGO
|
dangerous cargo
|
GEN
|
|
DGNL
|
diagonal
|
GEN
|
|
DGR
|
danger
|
GEN
|
|
DH
|
decision height
|
ICAO
|
|
DI
|
delay indefinite
|
ATC
|
|
DI
|
departure approval request for IFR flight
|
ATC
|
|
DIAM
|
diameter
|
GEN
|
|
DIF
|
diffuse
|
ICAO
|
|
DIR
|
director
|
GEN
|
|
DISABLD
|
disabled
|
GEN
|
|
DISC
|
discontinue
|
GEN
|
|
DISEM
|
disseminate
|
GEN
|
|
DIST
|
distance
|
ICAO
|
|
DIST
|
district
|
GEN
|
|
DISTR
|
distribute
|
GEN
|
|
DIV
|
divert
|
ICAO
|
|
DIV
|
division
|
GEN
|
|
DKTS
|
Dakotas
|
NWS
|
|
DLA
|
delay
|
ICAO
|
|
DLAC
|
delay account of
|
ATC
|
|
DLAT
|
delay time
|
ATC
|
|
DLC
|
delay clearance or delayed clearance
|
ATC
|
|
DLIC
|
Data link initiation capability
|
ICAO
|
|
DLT
|
delete
|
GEN
|
|
DLVR
|
deliver
|
GEN
|
|
DLVY
|
delivery
|
GEN
|
|
DLY
|
daily
|
GEN
|
|
DLY
|
Daily
|
ICAO
|
|
DMAAC
|
Defense Mapping Agency Aerospace Center
|
GEN
|
|
DMAHC
|
Defense Mapping Agency Hydrographic Center
|
GEN
|
|
DME
|
distance measuring equipment
|
ICAO
|
|
DMEG
|
DMEcollocated with glide slope
|
GEN
|
|
DMEL
|
DMEcollocated with localizer
|
GEN
|
|
DMER
|
DMEtactical air navigation with DME only
commissioned
|
GEN
|
|
DMEV
|
DMEcollocated with VOR
|
GEN
|
|
DMG
|
damage
|
GEN
|
|
DMNT
|
dominant
|
GEN
|
|
DMO
|
Directives Management Officer, FAA
|
GEN
|
|
DMSH
|
diminish
|
NWS
|
|
DMSTN
|
demonstration
|
GEN
|
|
DNA
|
Defense Nuclear Agency
|
GEN
|
|
DNG
|
danger
|
ICAO
|
|
DNS
|
dense
|
NWS
|
|
DNSLP
|
downslope
|
NWS
|
|
DNSTRM
|
downstream
|
NWS
|
|
DNWND
|
downwind
|
ATC
|
|
DO
|
Deputy Commander for Operations
|
GEN
|
|
DO
|
ditto
|
GEN
|
|
DOB
|
date of birth
|
GEN
|
|
DOC
|
Department of Commerce
|
GEN
|
|
DOD
|
Department of Defense
|
GEN
|
|
DOE
|
Department of Energy
|
GEN
|
|
DOLLY
|
data link
|
GEN
|
|
DOM
|
domestic
|
ICAO
|
|
DOT
|
Department of Transportation
|
GEN
|
|
DOT1
|
Transport OneSecretary of Transportation
|
ATC
|
|
DOT2
|
Transport TwoDeputy Secretary of
Transportation
|
ATC
|
|
DP
|
deep
|
NWS
|
|
DP
|
dew point temperature
|
ICAO
|
|
DPCR
|
departure procedure
|
ATC
|
|
DPNG
|
deepening
|
NWS
|
|
DPT
|
depth
|
ICAO
|
|
DPTH
|
depth
|
NWS
|
|
DR
|
dead reckoning
|
ATC
|
|
DR
|
direct route
|
GEN
|
|
DR
|
low drifting
|
METAR
|
|
DRCT
|
direct
|
GEN
|
|
DRCTN
|
direction
|
GEN
|
|
DRDU
|
low drifting dust
|
METAR
|
|
DRFT
|
drift
|
NWS
|
|
DRG
|
during
|
ICAO
|
|
DRIR
|
direct readout infrared
|
GEN
|
|
DRMS
|
Distance Root Mean Square
|
ATC
|
|
DRR
|
Deployment Readiness Review
|
ATC
|
|
DRSA
|
low drifting sand
|
METAR
|
|
DRSN
|
low drifting snow
|
METAR
|
|
DRZL
|
drizzle
|
NWS
|
|
DS
|
domestic services (island operations)
|
GEN
|
|
DS
|
dust storm
|
METAR
|
|
DSATR
|
descend so as to reach
|
ATC
|
|
DSATX
|
descend so as to cross
|
ATC
|
|
DSB
|
double sideband
|
ICAO
|
|
DSCNT
|
descent
|
ATC
|
|
DSGND
|
designated
|
GEN
|
|
DSIPT
|
dissipate
|
NWS
|
|
DSN
|
Defense Switching Network
|
GEN
|
|
DSND
|
descend
|
ATC
|
|
DSNDI
|
descend immediately
|
ATC
|
|
DSNT
|
distant
|
GEN
|
|
DSPL
|
display
|
GEN
|
|
DSPLC
|
displace
|
GEN
|
|
DSPN
|
disposition
|
GEN
|
|
DSPRL
|
dispersal
|
GEN
|
|
DSR
|
desire
|
GEN
|
|
DSRGD
|
disregard
|
GEN
|
|
DST
|
distort
|
GEN
|
|
DSTC
|
distance
|
GEN
|
|
DSTND
|
destined
|
ATC
|
|
DTAM
|
descend to and maintain
|
ATC
|
|
DTAX
|
descend to and cross
|
ATC
|
|
DTE
|
data terminal equipment
|
GEN
|
|
DTF
|
data transmission feature
|
GEN
|
|
DTG
|
date time group
|
GEN
|
|
DTHR
|
Displaced runway threshold
|
ICAO
|
|
DTL
|
detail
|
GEN
|
|
DTLN
|
international dateline
|
NWS
|
|
DTR
|
data transmission request
|
GEN
|
|
DTRM
|
determine
|
GEN
|
|
DTRT
|
deteriorate
|
NWS
|
|
DTS
|
Diplomatic Telecommunications Service
|
GEN
|
|
DTW
|
dual tandem wheels
|
ICAO
|
|
DU
|
widespread dust
|
METAR
|
|
DUATS
|
direct user access terminal system
|
GEN
|
|
DUC
|
dense upper cloud
|
ICAO
|
|
DUPE
|
duplicate
|
GEN
|
|
DUPE
|
This is a duplicate message (to be used in
AFS as a procedure signal)
|
ICAO
|
|
DUR
|
duration
|
ICAO
|
|
DURC
|
during climb
|
ATC
|
|
DURD
|
during descent
|
ATC
|
|
DURG
|
during
|
GEN
|
|
DURN
|
duration
|
GEN
|
|
DV
|
distinguished visitors
|
GEN
|
|
DVFR
|
defense VFR
|
GEN
|
|
DVLP
|
develop
|
GEN
|
|
DVOLMET
|
Data link VOLMET
|
ICAO
|
|
DVOR
|
doppler VHF omnidirectional radio range
|
ICAO
|
|
DVRG
|
diverge
|
GEN
|
|
DVRSN
|
diversion
|
GEN
|
|
DVV
|
downward vertical velocity
|
NWS
|
|
DW
|
dual wheels
|
ICAO
|
|
DWG
|
drawing
|
GEN
|
|
DWNDFTS
|
downdrafts
|
NWS
|
|
DWPNT
|
dew point
|
NWS
|
|
DWRC
|
descend well to right of course
|
ATC
|
|
DWTR
|
descend well to right
|
ATC
|
|
DX
|
duplex
|
GEN
|
|
DZ
|
drizzle
|
ICAO
|
