A

ACARS Aircraft Communications Addressing and Reporting System
ACAS Airborne Collision Avoidance System
ACC Area Control Centre
ACI Airport Council International
ADS Automatic Dependent Surveillance
ADS - B Automatic Dependent Surveillance - Broadcast
ADS-C Automatic Dependent Surveillance - Contract
AFG Audit and Financial Group
AFTN Aeronautical Fixed Telecommunication Network
AIM Aeronautical Information Management
AIS Aeronautical Information Service
AMHS Automated Message Handling System
ANS Air Navigation Services
ANSP Air Navigation Services Provider
AOC Air Operator Certificate
AOR-E Atlantic Ocean Region East
APP Approach Control
ARINC Aeronautical Radio Incorporate
ARN ATS Route Network
ARTAS ATM SuRveillance Tracker and Server
ASM Airspace Management
ASMGCS Advanced Surface Movement Guidance and Control System
ATC Air Traffic Control
ATCC Air Traffic Control Centre
ATCO Air Traffic Control Officer
ATFM Air Traffic Flow Management
ATM Air Traffic Management
ATMC Air Traffic Management Centre
ATN Aeronautical Telecommunication Network
ATS Air Traffic Services
ATSU Air Traffic Services Unit

B

B-RNAV Basic Area Navigation

C

CAIRDE Civil Aviation Integrated Radar Display Equipment
CANSO Civil Air Navigation Services Organisation
CNS Communications, Navigation and Surveillance
CPDLC Controller Pilot Data Link Communications
CSU Chargeable Service Unit

D

DME Distance Measuring Equipment
DMEAN Dynamic Management of the European ATM Network
DVOR Doppler VHF Omni-directional Radio Range

E

EASA European Aviation Safety Agency
EATCHIP European Air Traffic Control Harmonisation Programme
EATM European Air Traffic Management
ECIP Eurocontrol Convergence & Implementation Programme
EFDPS European Flight Data Processing
EGNOS European Geostationary Navigation Overlay System
ESARR European Safety Regulatory Requirements
ETF European Transport Federation

F

FAA Federal Aviation Administration
FAB Functional Airspace Block
FACTS Future Area Control Tools Supp
FANS Future Air Navigation Systems
FDO Flight Data Operator
FDP Flight Data Processing
FDPS Flight Data Processing System
FIR Flight Information Region
FL Flight Level
FUA Flexible Use of Airspace

G

GAT General Air Traffic
GNSS Global Navigation Satellite Systems
GPS Global Positioning System

H

HF High Frequency (radio communication)
HMI Human Machine Interface

I

IAA Irish Aviation Authority
IALPA Irish Airline Pilots' Association
IATA International Air Transport Association
ICAO International Civil Aviation Organisation
ILS Instrument Landing System
INS Inertial Navigation System

J

JAA Joint Aviation Authorities

K

KPAs Key Performance Areas

L

LAN Local Area Network

M

MATSE Meeting (of ECAC Transport Ministers) on the Air Traffic System in Europe
MRTS Multi Radar Tracking System
MSSR Monopulse Secondary Surveillance Radar

N

NAT SPG North Atlantic Systems Planning Group
NDB Non-Directional Beacon NOTA Northern Oceanic Transition Area
NSA National Supervisory Authority

O

OAT Operational Air Traffic
OCA Oceanic Control Area
ODS Operational Display System
OLDI On Line Data Interchange

P

PHARE Programme for Harmonisation of ATC Research in Europe
PS Primary Surveillance Radar

R

RDPS Radar Data Processing System
RNAV Area Navigation
RVSM Reduced Vertical Separation Minima

S

SARPs Standards and Recommended Practices
SATCOM Satellite Communications
SES Single European Sky
SID Standard Instrument Departure
SLOP Strategic Lateral Offset Procedures
SMR Surface Movement Radar
SMS Safety Management System
SOTA Shannon Oceanic Transition Area
SSR Secondary Surveillance Radar
STAR Standard Arrival Route

T

TACT Tactical Flow Management Working Group
TMA Terminal Control Area

U

UAC Upper Area Control Centre
UIR Upper Information Region
UPS Uninterruptible Power Supply

V

VDL Very High Frequency Data Link
VHF Very High Frequency
VoIP Voice over Internet Protocols
VOR VHF Omni-directional Radio Range

W

WGS World Geodetic System