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

ORDER
JO 7340.2E
Effective Date:
July 24, 2014
 
     

Subject:  Contractions
   
Includes Change 1 dated 11/13/14

[Back to Section 1. Decode]

I

Contraction

Definition

Usage

I/IFR

intermittent instruments

ATC

IAARC

International Administrative Aeronautical Radio Conference

GEN

IAATCD

if authorized by ATC, DME may be used

ATC

IAC

instrument approach chart (followed by name/title)

ICAO

IAF

initial approach fix

GEN

IAO

in and out of clouds

ICAO

IAP

instrument approach procedure

ICAO

IAR

intersection of air routes

ICAO

IAS

indicated air speed

ATC

IATA

International Air Transport Association

GEN

IATSC

International Aeronautical Telecommunications Switching Center

GEN

IAW

in accordance with

GEN

IBASF

intervals between aircraft in stream type formation

ATC

IBN

identification beacon

ICAO

IBND

inbound

ATC

IC

ice crystals (weather reports only)

METAR

IC

icing (PIREP only)

ATC

ICAO

International Civil Aviation Organization

GEN

ICD

Interface Control Document

ATC

ICG

icing

NWS

ICGIC

icing in clouds

NWS

ICGICIP

icing in clouds and precipitation

NWS

ICGIP

icing in precipitation

NWS

ID

identify or identifier

ICAO

IDAT

interfacility data

GEN

IDENT

identification

ICAO

IDP

individual development plan

GEN

IF

intermediate approach fix

ICAO

IF

intermediate fix

GEN

IFAMP

if approach missed proceed

ATC

IFF

identification friend/foe

ICAO

IFHOL

if holding

ATC

IFIM

International Flight Information Manual

GEN

IFINS

if instrument conditions encountered

ATC

IFO

International Field Office

GEN

IFO

interphone

GEN

IFONO

interphone (service F) not operative

GEN

IFORO

interphone (service F) resumed operation

GEN

IFPFP

individual flight plans from this point

ATC

IFR

instrument flight rules

ICAO

IFSS

International Flight Service Station

GEN

IFUN

if unable

GEN

IFVLS

if flight visibility becomes less than

ATC

IFVR

if visibility remains

ATC

IGA

international general aviation

ICAO

IGIA

Interagency Group on International Aviation

GEN

IIA

if incorrect advise

GEN

IISD

if incorrect service direct

GEN

ILAS

instrument low approach

ATC

ILS

instrument landing system

GEN

ILSP

ILS­partial

GEN

IM

inner marker

ICAO  

IMAP

immediately after passing

ATC

IMC

instrument meteorological conditions

GEN

IMDT

immediate

NWS

IMF

interrogation sign

GEN

IMG

immigration

ICAO

IMI

Intensity unknown (weather reports only)

ICAO

IMP

impracticable

GEN

IMPL

impulse

GEN

IMPR

improve

ICAO

IMPT

important

GEN

IMT

immediate or immediately

GEN

IN

inch

ICAO

INA

initial approach

ICAO

INADQT

inadequate

GEN

INATS

interruption of air traffic services

GEN

INBD

inbound

ICAO

INC

in clouds

ICAO

INC

incorporated

GEN

INCERFA

uncertainty phase code (alerting service)

ATC

INCL

include

GEN

INCLV

inclusive

GEN

INCOMP

incomplete

GEN

INCOR

incorrect

GEN

INCR

increase

GEN

INDC

indicate

GEN

INDEF

indefinite

GEN

INDUS

industrial

GEN

INF

inland navigation facility

GEN

INFO

information

GEN

INIT

initial training

GEN

INLD

inland

NWS

INOF

if not off

GEN

INOP

inoperative

ICAO

INP

if not possible

GEN

INPR

in progress

ICAO

INREQ

information request

GEN

INS

inertial navigation system

ICAO

INSP

inspect

GEN

INST

instrument

GEN

INSTA

instruments authorized

ATC

INSTA

interstate

GEN

INSTBY

instability

NWS

INSTL

install

GEN

INSTR

instruct

GEN

INSTR

instrument

ICAO

INSUF

insufficient scheduled time available

GEN

INSUF

unable to finish

GEN

INT

intersection

ICAO

INTCNTL

intercontinental

GEN

INTCP

intercept

GEN

INTD

intend

GEN

INTER

intermittent

ICAO

INTFC

interference

GEN

INTL

international

ICAO

INTMD

intermediate

GEN

INTMT

intermittent

GEN

INTNS

intentions

GEN

INTR

interior

NWS

INTRG

interrogator

ICAO

INTRMTRGN

Inter­Mountain Region

NWS

INTRP

interrupt

GEN

INTS

intense

NWS

INTSF

intensify or intensifying

ICAO

INTSFY

intensify

NWS

INTST

intensity

ICAO

INTVL

interval

GEN

INTXN

intersection

GEN

INVES

investigate

GEN

INVOF

in the vicinity of

ATC

INVRN

inversion

NWS

INVSTAR

investigate and report

GEN

IOVC

in overcast

NWS

IP

initial point

ATC

IP

instructor pilot

GEN

IP/HHCL

initial point/H­hour control line

ATC

IPV

improve

GEN

IR

ice on runway

NWS

IR

IFR military training route

GEN

IRAC

Interdepartmental Radio Advisory Committee

GEN

IRAD

inbound radial

ATC

IREG

irregular

GEN

IRN

Interface Revision Notices

ATC

IS

island

GEN

ISA

international standard atmosphere

ICAO

ISB

independent sideband

ICAO

ISMGR

Island Manager

GEN

ISMLS

interim standard microwave landing system

GEN

ISOL

isolate

GEN

ITCK

issue time check

ATC

ITNRNT

itinerant

GEN

ITRY

itinerary

GEN

ITU

International Telecommunications Union

GEN

IVFRC

in VFR conditions

ATC

 

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