U.S. DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
Air Traffic Organization Policy

ORDER
JO 7340.2D
Effective Date:
May 2, 2013
 
     

Subject:  Contractions
       Includes: Change 1 effective 8/22/13 and Change 2 effective 12/12/13    
 

[Back to Section 1. Decode]

D

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

 

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