I
I : Italy
I and Q Channels : In-phase and Quadrature channels
I(Fd) : MTI Improvement Factor
I/A : Incident Analysis
I/O : Input / Output
I/R : Interrogator/Responsor
I²SLS : Improved Interrogation Side Lobe Suppression
IA : Indirect Access
IA Inspection Authorization
IA : International Alphabet
IA/CC : Indirect Access/Common Control
IA-5 : International Alphabet Number 5
IAAE : International Association of Airport Executives
IAC : Instrument Approach Chart
IAC : Integrated Avionics Computer
IACA : International Air Carrier Association
IACH : Individual ATC Flight Plan Changes
IACS : INTERGRAPH Aeronautical Charting System
IACSP : International Aeronautical Communications
Service Providers
IAEA : International Atomic Energy Agency
IAF : Initial Approach Fix
IAFP : Individual ATC Flight Plan Proposal
IAG : Interim Airport Group
IAG : International Association of Geodesy
IAIP : Integrated Aeronautical Information Package
IAL : Instrument Approach and Landing (Chart)
IAL : International Air-radio Limited (UK)
IAM : Institute of Aviation Medicine
IAMP : Initial Approach Waypoint
IANS : Institute of Air Navigation Services (Luxembourg)
IANSSC : IANS Steering Committee
IAO : In and out of clouds
IAOA : Indicated Angle-of-Attack
IAOPA : International Council of Aircraft Owner and Pilot
Associations
IAPL : IFPS APL Message
IAR : Intersection of Air Routes
IAR : Instrument Autonomous Rules
IAR, IARTF : Institutional Arrangements and Requirements
Task Force
IARR : IFPS ARR Message – Individual Arrival Message
IAS : Indicated Air Speed
IATA : International Air Transport Association
IATTF : IFPS Acceptance Test Task Force
IAW : In accordance with
IAWP : Initial Approach Waypoint
IB : Iberia (airline)
IB : Information (display) Button
IBAA : International Business Aviation Association
IBAC : International Business Aviation Council
IBAP : Industry Based Prototype
IBILS : Integrity Beacon Landing System
IBN : Identification Beacon
IBP : Industry-Based Pre-operational Platform and Validation
IBRD : International Bank for Reconstruction and Development (= BIRD)
IC : (very small) Ice Crystals (meteo) (also know as Diamond dust)
IC : Integrated Circuit
IC : Intercom
ICAA : International Civil Airport Association
ICAAS : Integrated Control in Avionics for Air Superiority
ICAO : International Civil Aviation Organisation
ICARD : ICAO Codes and Route Designator System
ICB : International Competitive Bidding
ICBM : Intercontinental Ballistice Missile
ICCS : Integrated Communication Control System
ICCT : Internal Communications Core Team
ICCU : Intercomputer Communications Unit
ICD : Interface Control Document
ICE : Icing
ICET : IATA Capacity Enhancement Team
ICHG : IFPS Change Message
ICIP : Inital CIP (APT)
ICM : Interline Communications Manual
ICNI : Integrated Communications, Navigation and Identification
ICNL : IFPS Cancellation Message
ICNL : Individual Cancel
ICO : Intermediate Circular Orbit
ICP : Interactive Control Panel
ICP : Internal Clarification Project
ICR : Integrated Cancellation Ratio
ICR : Interactive Conflict Resolution
ICWG : Interface Control Working Group
ICWS : Integrated Control Work Station
ID : Identification (ICAO)
ID : Information Display
IDA : Indirect Access (VCS)
IDA : Initial Distribution Area
IDB : Integrated Database (DBE + DBC)
I-DCTS : Interim Digital (Data) Communications Terminal System
IDENT Identification Identify, Identifier
IDHS : Intelligence Data Handling System
IDMS : Integrated Database Management System
IDP : Initial Domain Part
IDRP : Inter Domain Routing Protocol
IDS : Information Display System
IE : Ireland (ISO Country Code)
IEC : International Electrotechnical
Commission/Committee
IEEE : Institute of Electrical and Electronic Engineers (US)
IEP : Information Exchange Programme
IEPR Integrated Engine Pressure Ratio
IES : Interface Editor System
IETF : Internal EATMS Task Force
IF : Initial Fix (ARINC 424 Path Terminator)
IF : Intermediate (approach) Fix
IF : Intermediate Frequency
IFA : Image Frequency Attenuation
IFALPA : International Federation of Airline Pilots Association
IFATCA : International Federation of Air Traffic Controllers Associations
IFATSEA : International Federation of Air Traffic Safety Electronic Associations
IFD : Initial Functional Description / EASIE
IFDS : Interactive Flight Data System
IFE : In-Flight Entertainment
IFIM : International Flight Information Manual
IFF : Identification Friend or Foe
IFFITAF : IFPS-DBE Functional Interface System Task- Force
IFFN : Identification Friend, Foe or Neutral
IFG-NME WG : Implementation Facilitation Group of the
National Management Experts Working Group
IFL : Intermediate Flight Level
IFLIPS : Integrated Flight Prediction System
IFOG : Interferometric Fiber Optic Gyro (see FOG)
IFOR : Implementation Forces (UN, NATO)
IFP : Keyword from IFPS used in FIELD 18 to provide a warning
IFPD : Individual Flight Plan Data
IFPL : IFPS Filed Flight Plan
IFPL : Individual Flight Plan Message
IFPO : IFPS Workstation Operaror
IFPPS : Integrated Flight Plan Processing System
IFPRU : IFPS Responsible Unit
IFPS : Integrated Initial Flight Plan Processing System
IFPU : IFPS Unit
IFPU1/RPL : CFMU/FDOD - IFPS Unit - Haren Brussels (Belgium)
IFPU2 : Integrated initial Flight Plan Processing System
(Unit 2) CFMU/FDOD - IFPS Unit - Brétigny-sur-Orge (France)
IFPZ : IFPS Zone
IFR : Instrument Flight Rules
IFRB : International Frequency Registration Board
IFTO : International Federation of Tour Operators
IG : Meridiana (airline)
IGA : International General Aviation
IGCN : Independent Ground Communications Network
IGFET Insulated Gate Field Effect Transistor
IGP : Ionospheric Grid Point
IGS : International GPS Reference Network
II : Interrogator Identity
IIMSES : Initial Implementation of Mode S Enhanced Surveillance (a common project UK, France, Germany,
Benelux, including POEMS)
IIS : Internal Information System
IISLS : Improved Interrogation Side Lobe Suppression
IKBS : Intelligent Knowledge Based System
IKD States : In Kind Delivery States (France, Germany, Italy, Spain, UK, represented by their ATS providers: DNA, DFS, ENAV, AENA, NATS)
IL : Israël (ISO Countries codes)
ILO : International Labour Organisation / Organisation
Internationale du Travail (=OIT)
ILS : Instrument Landing System
ILS : Integrated Logistic Support
ILSP : Integrated Logistic Support Program
IM : Inner Marker
IM : Information Management
IMA : Integrated Modular Avionics (see AIMS )
IMAL : Integrity Monitoring Alarm Limit
IMAWP : Initial Missed Approach Waypoint
IMC : Instrument Meteorological Conditions
IMF : International Monetary Fund
IMG : Immigration
IMM : Interacting Multiple Models : a generally applicable
algorithm of track state estimation
IMO : International Maritime Organisation / Organisation
maritime Internationale (= OMI)
IMP : Implementation Services
IMPACT : Informal Management Panel for ATC Training
IMPACT : Information Market Policy Actions
IMPACT : Innovative Methodology for the Projection of ATM Concepts onto the Training of ATCOs
IMPACT : Methods and tools to assess IMPACT on future
ATM systems
Impl : Implementation
IMPR : Improve or Improving
IMT : Immediate or Immediately
IMTEG : ILS/MLS Transition EUR Group
IMUX : Input MUltipleXer
IN : Inch, Inches
INA : Initial Approach
INBD : Inbound
INC : In Cloud(s)
InCAS : Interactive Collision Avoidance Simulator
INCERFA : Uncertainty Phase
INDEFLY : Indefinitely
IND SIMUL : Individual Simulation
Ind : Industry
INFO : Information
INFR-C : Infrastructure Creation
in.hg. inches of mercury
INI : Initial Approach Controller
INIT Initialization
INM : Integrated Noise Model (software developed by the US FAA, manufacturer: Aerospatiale Matra Airbus)
INMARSAT : International Mobile Satellite Organisation
INO : International NOTAM Operation
INOP : Inoperative
INP : If Not Possible
INPR : In Progress
INR Image Navigation and Registration
Ins : Inches
INS : Inertial Navigation System
INST : Installation
INSTL : Install or Installed or Installation
INSTAR : Institutional Arrangements for European Air Traffic Management
INSTILUX : Eurocontrol Institute of Air Navigation Services (LU)
INSTR : Insturment
Int : International
INT : Interesection
INTC Intercept
INTELSAT : International Telecommunications Satellite Organisation
Interactive : Interactive training
INTERCAUTRA : Internal CAUTRA protocol
INTL : International
INTNET : Integration Network (for flight data exchange)
INTRG : Interrogator
INTRP : Interrupt or Interruption or Interrupted
Intruder : Aircraft against which TCAS issues an advisory
INTSF : Intensify or Intensifying
INTST : Intensity
INU : Inertial Navigation Unit
INV : Innovative Studies and Technological Assessment
(ARDEP)
INV : Inverse / Inverted
INWP : Intermediate Waypoint
IO, I/O : Interoperability - Input / Output
IOATF : IFPS Operational Advisory Task Force
IOBD : Initial Off-Block Date
IOBT : Initial Off-Block Time
IOC : Initial Operational Capability
IOCD : Initial Operational Concept Document
IOCP : Internal Operational Clarification Project
IOD : Issue of Data
ION : Institute of Navigation
IOP : Input / Output Processor (RMCDE)
IOR : Indian Ocean Region (ICAO)
IOR : INMARSAT Indian Ocean Region
IOSS : Input Output Sub System
IP : Information Button (mouse)
IP : Information Paper
IP : Internetwork Protocol
IPAG : Intellectual Property Advisory Group (Policy
Guidelines for Intellectual Property Rights)
IPAS : Integrated Preparation and Analysis System
IPB : Inner Performance Boundary (Tunnel Concept)
IPC : Intermittent Positive Control
IPCC : Intergovernmental Panel for Climate Change
IPPC : Internet Pilot Planning Centre (Norway)
IPG : Integration Project Group
IPL : Initial Programme Loading
IPL : Intermediate Flight Plan
IPR : Intellectual Property Rights
IPRT : Internal Processing Response Time
IPS’s : Intellectual Proprietary Rights
IPSE : Integrated Programming Support Environment
IPSky : Internet Technology in the Sky
IPT : Internal Processing Time
IPT Integrated Product Team
IPv6 : Internet protocol version 6
IQ : Intelligence Quotient
IQ : Iraq (ISO countries codes)
IR : Ice on Runway
IR : Infrared
IR : Integrated Receiver
IR : Iran (ISO countries codes)
IR : Iran Airlines (airline)
IRAS : Interactive Radar Analysis System
IREN : Incident Reporting European Network
IRF : Incident Report Form (DECADE)
IRF : Interrogation Repetition Frequency (radar standard)
IRIG : (clock)
IRL : Ireland
IRMA : Intermediate Redesigned MCC Architecture
(ESCO/DECADE)
IROI : Instantaneous Return on Investment
IRPL : Internal Repetitive Flight Plan
IRR : Internal Rate of Return
IRS : Inertial Reference System
IRS : Interface Requirements Specification
IRS : Intermediate Route Sequence (FPPS/DECADE)
IRT : Interrogation Repetition Time
IRU : Inertial Reference Unit – part or IRS
IRVR : Instrument Runway Visual Range
IS : Iceland (ISO Country Code)
IS : Interface Specification
IS : Intermediate System
ISA : Inertial Sensor Assembly - part of IRS
ISA : Innovative Slot Allocation
ISA : Instantaneous Self-Assessment
ISA : International Standard Atmosphere
ISB : Independent Sideband
ISDN : Integrated Services (switched) Digital Network
(=RNIS)
ISDU : Inertial System Display Unit
IS-ES : Intermediate System - End System
ISL : Intermediate Supplementary Flight Level
ISLS : Interrogation Side Lobe Suppression
ISO 10737 : Transport Layer Management (Standards For Open Systems Interconnection And Data Communication Published by ISO)
ISO 7498-3 : Basic Reference Model Part 3 : Naming And Addressing (Standards For Oven Systems Interconnection And Data Communication Published By (ISO)
ISO 8072 : Transport Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 8073 AD 1 : Connection-Oriented Transport Protocol Addendum 2 : Class Four Operation Over Connectionless Network Service (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 8073 : Connection-Oriented Transport Protocol Specification (Standards For Open Systems
Interconnection And Data Communication Published By ISO)
ISO 8208 : International Organisation for Standardisation X.25 Packet Level Protocol for Data Terminal Equipment Document.
ISO 8326 : Basic Connection-Oriented Session Protocol Specification (Standards For Open System Interconnection And Data Communication Published By ISO)
ISO 8327 : Basic Connection-Oriented Session Protocol Specification (Standards For Open Systems
Interconnection And Data Communication Published By IS0)
ISO 8348 AD 1 : Network Service Definition, Addendum 1 : Connectionless Mode Transmission (Standards For Oven Systems Interconnection And Data Communication Published By ISO)
ISO 8348 : Network Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 8473 : Protocol For Providing The Connectionless- Mode Network Service (Standards For Open Systems
Interconnection And Data Communication Published By ISO)
ISO 8649 : Service Definition For The Association Control Service Element (Standards For Open Systems
Interconnection And Data Communication Published By ISO)
ISO 8650 : Protocol Specification For The Association Control Service Element (Standards For Open Systems
Interconnection And Data Communication Published By ISO)
ISO 8822 : Connection-Oriented Service Definition (Standards For Open Systems Interconnection And Data
Communication Published By ISO)
ISO 8823 : Connection-Oriented Presentation Protocol (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 8878 : International Organisation For Standard Use Of X25 To Provide OSI (Open Systems Interconnection) Connection Mode Network Services (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 9000 : International Standards For Quality Management, 1990
ISO 9072-1 : Remote Operations - Part 1 : Model. Notation And Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 9072-2 : Remote Operations - Part 2 : Protocol Specification Version (Standards For Open Systems
Interconnection And Data Communication Published By ISO)
ISO 9545 : Protocol For Providing The Connectionless- Mode Network Service (Standards For Oven Systems
Interconnection And Data Communication Published By ISO)
ISO 9595 : Common Management Information Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)
ISO 9596 : Management Information Protocol - Part 1 : Specification (Standards For Oven Systems
Interconnection And Data Communication Published By ISO)
ISO : International Standards Organisation / Organisation internationale de normalisation
ISOL : Isolated
OSI : Open System Interconnexion
ISPACG : Informal South Pacific ATS Co-ordination Group
ISQMS : Integrated Safety and Quality Management System (Safety Domain)
ISR : Independent Standby Radio
ISS : Implementation Support Services ; Implementation
Support to States
ISS : Indirect sub-System
ISSS : Initial Sector Suite System (FAA)
IST : Indirect Support Task
IT : Information Technology
IT : Italy (ISO Country Code)
ITA : Integrated Task Analysis (of ATCOs)
ITA : International Telegraph Alphabet
ITA-2 : International Telegraph Alphabet Number 2
ITAEG : Information Technology Advisory Expert Group (Standardisation, EPD - CEN/CENELEC/ETSI)
ITAM : Integrated Task Analysis Methodology
ITF : International Transport Workers Federation
ITI : Italian Interface
ITID : Individual Training- Instructor-dependent
ITIRS : International Terrestrial Reference System
ITM : Intermediate Approach controller
ITMD : Individual Training - Material-dependent
ITR : International Transit Route
ITSTC : Information Technologie Steering Committee
ITT : Invitation Property Rights
ITU WARC-95 : International Telecommunication Union
World Radio Conference
ITU : International Telecommunications Union
ITU-T : International Telecommunications Union - Telephone
IUCM : IFPS Unit Configuration Manager
IVR : Immersive Virtual Reality
IVSI : Instantaneous Vertical Speed Indicator
IVSN : Initial Voice Switched Network
IWGE : International Working Group on (air) Exercises
IWP : Intermediate Waypoint














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