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 2. Encode]

I

Definition

Contraction

Usage

ICAO Middle East/Asia Region

MID/ASIA

ATC

ice crystals (weather reports only)

IC

METAR

ice on runway

IR

NWS

ice pellet showers

SHPL

METAR

ice pellets

PL

METAR

icing

ICG

NWS

icing (PIREP only)

IC

ATC

icing in clouds

ICGIC

NWS

icing in clouds and precipitation

ICGICIP

NWS

icing in precipitation

ICGIP

NWS

identify or identifier  

ID

ICAO

identification beacon

IBN

ICAO

identification friend/foe

IFF

ICAO

identification

IDENT

ICAO 

if approach missed proceed

IFAMP

ATC

if authorized by ATC, DME may be used

IAATCD

ATC

if flight visibility becomes less than

IFVLS

ATC

if holding

IFHOL

ATC

if incorrect advise

IIA

GEN

if incorrect service direct

IISD

GEN

if instrument conditions encountered

IFINS

ATC

if not off

INOF

GEN

if not possible

INP

GEN

if unable

IFUN

GEN

if visibility remains

IFVR

ATC

IFR military training route

IR

GEN

ILS­partial

ILSP

GEN

immediate

IMDT

NWS

immediate or immediately

IMT

GEN

immediately after passing

IMAP

ATC

immigration

IMG

ICAO

important

IMPT

GEN

impracticable

IMP

GEN

improve

IMPR

ICAO

improve

IPV

GEN

impulse

IMPL

GEN

in accordance with

IAW

GEN

in and out of clouds

IAO

ICAO

in clouds

INC

ICAO

in overcast

IOVC

NWS

in progress

INPR

ICAO

in RVR indicates visibility greater than highest reportable sensor value (e.g. P600FT)

P

METAR

in RVR indicates visibility less than lowest reportable sensor value (e.g. M600)

M

METAR

in temperature field means “minus” or below zero

M

METAR

in the vicinity of

INVOF

ATC

in valleys

VAL

ICAO

in VFR conditions

IVFRC

ATC

inadequate

INADQT

GEN

inbound

IBND

ATC

inbound

INBD

ICAO

inbound radial

IRAD

ATC

inch

IN

ICAO

include

INCL

GEN

inclusive

INCLV

GEN

incomplete

INCOMP

GEN

incorporated

INC

GEN

incorrect

INCOR

GEN

increase

INCR

GEN

indefinite

INDEF

GEN

independent sideband

ISB

ICAO

indicate

INDC

GEN

indicated air speed

IAS

ATC

Indication of a request

RQ

ICAO

individual development plan

IDP

GEN

individual flight plans from this point

IFPFP

ATC

industrial

INDUS

GEN

inertial navigation system

INS

ICAO

information

INFO

GEN

information request

INREQ

GEN

initial approach

INA

ICAO

initial approach fix

IAF

GEN

initial point

IP

ATC

initial point/H­hour control line

IP/HHCL

ATC

initial training

INIT

GEN

inland

INLD

NWS

inland

LAN

ICAO

inland navigation facility

INF

GEN

inner marker

IM

ICAO

inoperative

INOP

ICAO 

inspect

INSP

GEN

instability

INSTBY

NWS

install

INSTL

GEN

instruct

INSTR

GEN

instructor pilot

IP

GEN

instrument

INST

GEN

instrument

INSTR

ICAO

instrument approach chart (followed by name/title)

IAC

ICAO

instrument approach procedure

IAP

ICAO

instrument flight rules

IFR

ICAO

instrument landing system

ILS

GEN

instrument low approach

ILAS

ATC

instrument meteorological conditions

IMC

GEN

instruments authorized

INSTA

ATC

insufficient scheduled time available

INSUF

GEN

intend

INTD

GEN

intense

INTS

NWS

intensify

INTSFY

NWS

intensify or intensifying

INTSF

ICAO

intensity

INTST

ICAO

Intensity unknown (weather reports only)

IMI

ICAO

intensity unknown (weather reports only)

U

NWS

intentions

INTNS

GEN

Interagency Group on International Aviation

IGIA

GEN

intercept

INTCP

GEN

intercontinental

INTCNTL

GEN

Interdepartmental Radio Advisory Committee

IRAC

GEN

Interface Control Document

ICD

ATC

Interface Revision Notices

IRN

ATC

interfacility data

IDAT

GEN

interference

INTFC

GEN

interim standard microwave landing system

ISMLS

GEN

interior

INTR

NWS

intermediate

INTMD

GEN

intermediate approach fix

IF

ICAO

intermediate fix

IF

GEN

intermittent

INTER

ICAO

intermittent

INTMT

GEN

intermittent instruments

I/IFR

ATC

Inter­Mountain Region

INTRMTRGN

NWS

international

INTL

ICAO

International Administrative Aeronautical Radio Conference

IAARC

GEN

International Aeronautical Telecommunications Switching Center

IATSC

GEN

International Air Transport Association

IATA

GEN

International Civil Aviation Organization

ICAO

GEN

international dateline

DTLN

NWS

International Field Office

IFO

GEN

International Flight Information Manual

IFIM

GEN

International Flight Service Station

IFSS

GEN

international general aviation

IGA

ICAO

international standard atmosphere

ISA

ICAO

International Telecommunications Union

ITU

GEN

interphone

IFO

GEN

interphone (service F) not operative

IFONO

GEN

interphone (service F) resumed operation

IFORO

GEN

interrogation sign

IMF

GEN

interrogator

INTRG

ICAO

interrupt

INTRP

GEN

interruption of air traffic services

INATS

GEN

intersection

INT

ICAO

intersection

INTXN

GEN

intersection of air routes

IAR

ICAO

interstate

INSTA

GEN

interval

INTVL

GEN

intervals between aircraft in stream type formation

IBASF

ATC

inversion

INVRN

NWS

investigate

INVES

GEN

investigate and report

INVSTAR

GEN

irregular

IREG

GEN

island

IS

GEN

Island Manager

ISMGR

GEN

isolate

ISOL

GEN

issue time check

ITCK

ATC

itinerant

ITNRNT

GEN

itinerary

ITRY

GEN

 

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