AEROSPACE ACRONYM & Abbreviation Guide

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December 2010

Avionics Magazine proudly presents the fifth edition of our biennial Aerospace Acronym & Abbreviation Guide. Updated with the latest terms from the magazine’s pages, this comprehensive guide has grown to more than 3,000 civil and military acronyms.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

  • I/O input/output

  • I&TE integration and test engineering

  • IA interoperability assessment

  • IAA incident awareness and assessment

  • IACSP international aeronautical com­munications service provider

  • IAC integrated avionics computer

  • IAGS integrated ARINC ground station

  • IANA Internet assigned number authority

  • IAOA indicated angle of attack

  • IAOPA International Council of Aircraft Owners and Pilots Association

  • IAPA instrument approach procedures automation

  • IAPS integrated avionics processing system

  • IARP inverse address resolution protocol

  • IAS indicated airspeed

  • IAT investment analysis team

  • IATA International Air Transport Association

  • IBAC International Business Aviation Council

  • IC integrated circuit

  • IC intercabinet

  • ICAO International Civil Aviation Organization

  • ICAO IFPP ICAO Instrument Flight Procedures Panel

  • ICAO OCP ICAO Obstacle Clearance Panel

  • ICARD ICAO five-letter name code & route designator system

  • ICAP improved capability

  • ICAW Instructions for Continued Airworthiness (FAA)

  • ICC IAPS card cage

  • ICCAIA International Coordinating Council of Aerospace Industries Association

  • ICD interactive design center

  • ICD interface control document/drawing

  • ICD installation control drawing

  • ICM interline communications manual

  • ICMP Internet control message protocol

  • ICNIA integrated communications, navi­gation and identification avionics

  • ICP integrated core processor

  • ICS intercommunications system

  • ICS interface control specification

  • ICSS integrated communication switching system

  • ICU instrument comparator unit

  • ICU integrated control unit

  • ID identifier/identification

  • IDC indicator display/control

  • IDC internal diagnostic capabilities

  • IDD interface design document

  • IDEN integrated digital enhanced network

  • IDG integrated drive generator

  • IDI initial domain identifier

  • IDIQ indefinite-delivery/indefinite quantity

  • IDM Improved Data Modem

  • iDMU integrated data management unit

  • IDP initial domain part

  • IDRP interdomain routing protocol

  • IDS ice detection system

  • IDS inter-domain system

  • IDS integrated display system

  • IDU interactive display unit

  • IEC IAPS environmental control module

  • IEC International Electrotechnical Commission

  • IEC International Engineering Consortium

  • IED improvised explosive device

  • IED insertion extraction device

  • IEEE Institute of Electrical and Electronics Engineers

  • IF intermediate frequency

  • IFALPA International Federation of Airline Pilots Associations

  • IFASS integrated system for surveillance and radio transmission

  • IFATCA International Federation of Air Traffic Controllers Associations

  • IFC indicated final cost

  • IFDL intraflight data link

  • IFE&C in-flight entertainment and connectivity

  • IFE in-flight entertainment

  • IFF identification, friend or foe

  • IFIS integrated flight information system

  • IFPS integrated initial flight plan processing system

  • IFR instrument flight rules

  • IFRB International Frequency Registration Board

  • IGES initial graphic exchange specification

  • IGES intermediate ground earth station

  • IGIA Interagency Group on International Aviation

  • IGV inlet guide vane

  • IHAS integrated hazard avoidance system

  • ILA International Law Association

  • ILM independent landing monitor

  • ILS instrument landing system

  • ILSP integrated logistics support plan

  • IMA integrated modular avionics

  • IMC instrument meteorological conditions

  • IMG implementation manager group

  • IMU inertial measurement unit

  • INFO information frame

  • INAV interactive navigation

  • inHg inches of mercury

  • INMARSAT International Maritime Satellite Organization

  • INMS integrated network management system

  • INS inertial navigation system

  • INTELSAT International Telecommunications Satellite Organization

  • InterNIC Internet Network Information Center

  • Interop interoperability

  • IO information operations (U.S. Army)

  • IOC initial operating capability

  • ION Institute of Navigation

  • IOR Indian Ocean region

  • IOS Internet operating system

  • IOT&E initial operational test and evaluation

  • IP intellectual property

  • IP Internet protocol

  • IPACG Informal Pacific ATC Coordination Group

  • IPC intermediate pressure compressor

  • IPC interprocess communication

  • IPD industrial products division

  • IPI initial protocol identifier

  • IPT integrated product team

  • IPR Internet protocol router

  • IPT integrated product team

  • IPT integrated project team

  • IPT intermediate pressure turbine

  • IR infrared

  • IRAC Interdepartmental Radio Advisory Committee

  • IR&D investment research and development

  • IRIG-B inter-range instrumentation group-time code format B

  • IRIS Iris Recognition Immigration System

  • IRP integrated refuel panel

  • IRR internal rate of return

  • IRS inertial reference system

  • IRS interface requirements specification

  • IRU inertial reference unit

  • IS intermediate system

  • ISA industry standard architecture

  • ISA Instrument Society of America

  • ISC integrated systems controller

  • ISDN integrated services digital network

  • ISDOS information system design and optimization system

  • ISDU inertial system display unit

  • ISH intermediate system hello

  • ISIS integrated sensor is structure

  • ISLN isolation

  • ISMS in-flight safety monitoring system

  • ISO International Standards Organization

  • ISO PA ISO protocol architecture

  • ISP integrated switching panel

  • ISP internet service provider

  • ISR intelligence, surveillance and reconnaissance

  • ISR interrupt service routine

  • ISS integrated surveillance system

  • ISSN intermediate system sub-network

  • ISSS initial sector suite system/sub­system

  • ISU initial signal unit

  • ITAR International Traffic in Arms Regulations

  • ITC in-trail climb

  • ITD in-trail descent

  • ITP in-trail procedures

  • ITS integrated test system

  • ITSE integrated test and support environment

  • ITU International Telecommunications Union

  • ITWS integrated terminal weather system

  • IUPS internal uninterruptible power supply

  • IV isolation valve

  • IVSI instantaneous vertical speed indicator