Aerospace Acronym and Abbreviation Guide

The Avionics Aerospace Acronym and Abbreviation Guide

December 2010

Avionics proudly presents the fifth edition of our biennial Aerospace Acronym and 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 i nput/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