AMC2 ATCO.D.010(a) Composition of initial training

LIST OF ABBREVIATIONS

For the purposes of:

—             AMC1 ATCO.D.010(a)(1) Composition of initial training — BASIC TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(i) Composition of initial training — AERODROME CONTROL VISUAL RATING (ADV) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(ii) Composition of initial training — AERODROME CONTROL INSTRUMENT RATING FOR TOWER ADI (TWR) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(iii) Composition of initial training — APPROACH CONTROL PROCEDURAL RATING (APP) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(iv) Composition of initial training — AREA CONTROL PROCEDURAL RATING (ACP) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(v) Composition of initial training — APPROACH CONTROL SURVEILLANCE RATING (APS) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(vi) Composition of initial training — AREA CONTROL SURVEILLANCE RATING (ACS) TRAINING — SUBJECT OBJECTIVES AND TRAINING OBJECTIVES

the following abbreviations apply:

Abbreviation                        Meaning

A-RNP                        Advanced Required Navigation Performance

A/B (Type)                A and B type approaches (classifications)

ABAS                           Aircraft-based Augmentation System

ABES                           Abnormal and Emergency Situations (Subject)

ACARS                        Aircraft Communications Addressing and Reporting System

ACAS                           Airborne Collision Avoidance System

ACC                             Area Control Centre

ACFTB                        Aircraft — Basic Training (subject)

ACFT                           Aircraft (subject)

ACN                             Aircraft Classification Number

ACP                             Area Control Procedural Rating

ACS                              Area Control Surveillance Rating

ADF                             Automatic Direction Finding System

ADI                              Aerodrome Control Instrument

ADS                             Automatic Dependent Surveillance

ADS-B                          Automatic Dependent Surveillance — Broadcast

ADS-C                          Automatic Dependent Surveillance — Contract

ADV                             Aerodrome Control Visual Rating

ADVS                          Advisory Service

AEA                             Association of European Airlines

AFIL                             Air Filed Flight Plan

AFTN                           Aeronautical fixed telecommunication network

AGA                            Aerodromes

AIC                               Aeronautical Information Circular

AIP                               Aeronautical Information Publication

AIRAC                          Aeronautical Information Regulation and Control

AIRAC SUP                AIRAC Supplement

AIREP                         Air-Report

AIRMET                     Information concerning en-route weather phenomena which may affect the safety                                     of low-level aircraft operations

AIS                               Aeronautical Information Service

ALRS                            Alerting Service

AMC                            Acceptable Means of Compliance

ANS                             Air Navigation Services

AP/FD                          Autopilot/Flight Director

APM                            Approach Path Monitor

APP                             Approach Control/Centre/Procedural Rating

APS                              Approach Control Surveillance Rating

APV                             Approach Procedure with Vertical guidance

APW                            Area Proximity Warning

ASDA                          Accelerate Stop Distance Available

ASM                            Airspace Management

ASMGCS                   Advanced Surface Movement Guidance and Control Systems

ATC                              Air Traffic Control

ATCEUC                     Air Traffic Controllers European Unions Coordination

ATCO                          Air Traffic Controller

ATCS                           Air Traffic Control Service

ATFCM                       Air Traffic Flow and Capacity Management

ATFM                          Air Traffic Flow Management

ATIS                             Automatic Terminal Information Service

ATM                            Air Traffic Management

ATMB                          Air Traffic Management — Basic Training (subject)

ATS                              Air Traffic Services

ATZ                              Aerodrome Traffic Zone

AVASI                          Advanced Visual Approach Slope Indicator

Beidou                       Chinese Navigation Satellite System

BIRDTAM                  Bird hazard NOTAM (NOTAM reporting bird hazard)

CANSO                       Civil Air Navigation Services Organisation

CAT                              Clear-Air Turbulence

CBA                             Cross Border Area

CBT                              Computer-Based Training

CCO                             Continuous Climb Operations

CDO                             Continuous Descent Operations

CDR                             Conditional Route

CEM                            Collaborative Environmental Management

CISM                           Critical Incident Stress Management

CPDLC                        Controller Pilot Data Link Communications

CPL                              Current Flight Plan

CWP                            Controller Working Position

DA                                Decision Altitude

DFTI                             Distance from Touchdown Indicator

DH                                Decision Height

DMAN                        Departure Manager

DME                            Distance Measuring Equipment

Doc                              Document

EASA                           European Aviation Safety Agency

EAT                              Expected Approach Time

EATCHIP                    European Air Traffic Control Harmonisation and Integration Programme

EATMP                       European Air Traffic Management Programme

EC                                 European Commission

ECAC                           European Civil Aviation Conference

EET                               Estimated Elapsed Time

EFIS                             Electronic Flight Instrument System

EGNOS                       European Geostationary Navigation Overlay Service

EGPWS                      Enhanced Ground Proximity Warning System

EQPS                           Equipment and Systems (subject)

EQPSB                        Equipment and Systems — Basic Training (subject)

ETF                               European Transport Workers' Federation

EU                                European Union

EU ETS                        European Union Emissions Trading Scheme

EUROCONTROL      European Organisation for the Safety of Air Navigation

FA                                Fix to Altitude

FAB                             Functional Airspace Block

FAF                              Final Approach Fix

FAP                              Final Approach Point

FDPS                           Flight Data Processing System

FIR                               Flight Information Region

FIS                                Flight Information Service

FMS                             Flight Management System

FPB                              Flight Progress Board

FPL                               Flight Plan

FRA                              Free Route Airspace

FRT                              Fixed Radius Transition

FTE                               Flight Technical Error

FUA                             Flexible Use of Airspace

Galileo                       European Satellite Navigation System

GBAS                          Ground-Based Augmentation System

GLONASS                  Global Orbiting Navigation Satellite System

GNSS                          Global Navigation Satellite System

GP                                Glide Path

GPS                             Global Positioning System

GPWS                          Ground Proximity Warning System

HF                                High Frequency

HFACS                        Human Factors Analysis & Classification System

HUM                           Human Factors (subject)

HUMB                        Human Factors — Basic Training (subject)

IACA                            International Air Carrier Association

IAF                               Initial Approach Fix

IAOPA                        International Council of Aircraft Owner and Pilot Associations

IATA                            International Air Transport Association

ICAO                           International Civil Aviation Organisations

IF                                  Intermediate Approach Fix 

IFALPA                       International Federation of Airline Pilots’ Associations

IFATCA                       International Federation of Air Traffic Controllers’ Associations

IFPS                             Integrated Initial Flight Plan Processing System

IFR                               Instrument Flight Rules

ILS                                Instrument Landing System

IMC                             Instrument Meteorological Conditions

INS                               Inertial Navigation System

INTR                            Introduction to the course (subject)

INTRB                          Introduction to the course — Basic Training (subject)

IRS                               Inertial Reference System

IRVR                            Instrument Runway Visual Range

ISA                               International Standard Atmosphere

ITU                               International Telecommunications Union

LAM                            Local Area Multilateration

LAW                            Aviation Law (subject)

LAWB                          Aviation Law — Basic Training (subject)

LDA                              Landing Distance Available

locLNAV                    Lateral Navigation

LOA                             Letter of Agreement

LOC                              Localiser

LOPs                            Local Operating Procedures

LPV                              Localiser Performance with Vertical guidance

MAPt                          Missed Approach Point

MCMF                        Multi-Constellation, Multi-Frequency

MDA                           Minimum Descent Altitude

MDH                           Minimum Descent Height

MET                             Meteorology

METAR                       Meteorological Aviation Routine Weather Report

METB                          Meteorology — Basic Training (subject)

MLAT                          Multilateration

Mode A                     SSR identification code

Mode C                      SSR Mode C (Pronounced: Mode Charlie)

Mode S                      Mode Select

MSAW                       Minimum Safe Altitude Warning

MTCD                          Medium Term Conflict Detection

MWO                          Meteorological Watch Office

NAV                            Navigation (subject)

NAVAID                     Navigation(al) Aid

NAVB                         Navigation — Basic Training (subject)

NDB                            Non-Directional Beacon

No.                              Number

NOTAM                     Notice to Airmen

NPA                             Non-Precision Approach

NSE                              Navigation System Error

OCA                             Obstacle Clearance Altitude

OCH                             Obstacle Clearance Height

OJT                              On-the-Job Training

OLDI                            On-Line Data Interchange

PA                                Precision Approach

PANS                          Procedures for Air Navigation Services

PAPI                            Precision Approach Path Indicator

PAR                             Precision Approach Radar

PBN                             Performance Based Navigation

PCN                             Pavement Classification Number

PCP IR                         Pilot Common Project Implementing Rule

PDE                              Path Definition Error

PEAR (model)          People who do the job/Environment in which they work/Actions they                                                   perform/Resources necessary to complete the job

PEN                             Professional Environment (subject)

PENB                           Professional Environment — Basic Training (subject)

PSR                              Primary Surveillance Radar

PTP                              Part-Time Practice

QDM                           Inbound magnetic  bearing to the station

QDR                             Outbound magnetic bearing from the station

QFE                              Atmospheric pressure at aerodrome elevation

QNH                            Atmospheric pressure at mean sea level

QTF                              The position of the transmitting station according to the bearings taken by the D/F                                      station

RA                                Resolution Advisory (TCAS)

RAIM                          Receiver Autonomous Integrity Monitoring

RCC                              Rescue Coordination Centre

RF                                 Radius to Fix

RNAV                          Area Navigation

RNP                             Required Navigation Performance

RNP APCH                 Required Navigation Performance Approach

RNP AR APCH          Required Navigation Performance Authorisation Required Approach

RNP (AR) DEP           Required Navigation Performance Authorisation Required Departure

ROC                             Rate of Climb

RPAS                           Remotely Piloted Aircraft System

RPL                              Stored Flight Plan

RTF                              Radiotelephony

RVR                             Runway Visual Range

RVSM                          Reduced Vertical Separation Minimum

SADIS                          Satellite Distribution of World Area Forecast System

SAR                              Search and Rescue

SARPs                          Standards and Recommended Practices (ICAO)

SBAS                           Satellite Based Augmentation System

SDPS                           Surveillance Data Processing System

SELCAL                       Selective Calling

SES                              Single European Sky

SHELL (model)        Software, Hardware, Environment, Live ware, Live ware Model

SIB                               Safety Information Bulletin

SID                               Standard Instrument Departure (Route)

SIGMET                      Significant Meteorological Information

SMAN                         Surface Management

SMR                            Surface Movement Radar

SNOWTAM               NOTAM on SNOW conditions

SOPs                           Standard Operating Procedures

SPECI                          Aviation Selected Special Weather Report

SSR                              Secondary Surveillance Radar

STAR                           Standard Instrument Arrival (Route)

STCA                           Short Term Conflict Alert

SVFR                           Special Visual Flight Rules

TA                                Traffic Alert (TCAS)

TACAN                       UHF Tactical Air Navigation Aid

TAF                              Terminal Area (Aerodrome) Forecast

TAWS                          Terrain Awareness and Warning System

TBO                             Trajectory-Based Operations

TCAC                           Tropical Cyclone Advisory Centre

TCAS                           Traffic Alert and Collision Avoidance System

TODA                          Take-Off Distance Available

TORA                          Take-Off Run Available

TRM                            Team Resource Management

TSA                              Temporary Segregated Area

TSE                               Total System Error

TWR                            Tower Control Unit (Aerodrome Control Tower)

UAS                             Unmanned Aircraft System

UDF                             Ultra High Frequency Direction Finder

UHF                             Ultra High Frequency

UTC                             Coordinated Universal Time

VAAC                          Volcanic Ash Advisory Centre

VASI                            Visual Approach Slope Indicator

VDF                             Very High Frequency Direction Finder

VFR                              Visual Flight Rules

VHF                             Very High Frequency

VMC                            Visual Meteorological Conditions

VNAV                         Vertical Navigation

VOLMET                    Routine Weather Reports Broadcast on VHF

VOR                            VHF Omni-directional Radio Range

WAFC                         World Area Forecast Centre

WAFS                         World Area Forecast System

WAM                          Wide Area Multilateration

WGS-84                     World Geodetic System 84

WMO                         World Meteorological Organization

[applicable until 3 August 2024 - ED Decision 2019/023/R]

LIST OF ABBREVIATIONS

For the purposes of:

—             AMC1 ATCO.D.010(a)(1) Composition of initial training — BASIC TRAINING — TRAINING OBJECTIVES;

—             AMC1 ATCO.D.010(a)(2)(i) Composition of initial training — AERODROME CONTROL RATING (ADC) TRAINING —TRAINING OBJECTIVES;

—             AMC1 ATCO.D.010(a)(2)(ii) Composition of initial training — APPROACH CONTROL PROCEDURAL RATING (APP) TRAINING — TRAINING OBJECTIVES;

—             AMC1 ATCO.D.010(a)(2)(iii) Composition of initial training — AREA CONTROL PROCEDURAL RATING (ACP) TRAINING — TRAINING OBJECTIVES;

—             AMC1 ATCO.D.010(a)(2)(iv) Composition of initial training — APPROACH CONTROL SURVEILLANCE RATING (APS) TRAINING — TRAINING OBJECTIVES

—             AMC1 ATCO.D.010(a)(2)(v) Composition of initial training — AREA CONTROL SURVEILLANCE RATING (ACS) TRAINING — TRAINING OBJECTIVES

the following abbreviations apply:

Abbreviation           Stands for / Means

A-RNP                        Advanced Required Navigation Performance

A/B (Type)                A and B type approaches (classifications)

ABAS                           Aircraft-based Augmentation System

ABES                           Abnormal and Emergency Situations (Subject)

ACARS                        Aircraft Communications Addressing and Reporting System

ACAS                           Airborne Collision Avoidance System

ACC                             Area Control Centre

ACFTB                         Aircraft — Basic Training (subject)

ACFT                           Aircraft (subject)

ACN                             Aircraft Classification Number

ACP                             Area Control Procedural Rating

ACS                              Area Control Surveillance Rating

ADF                             Automatic Direction-Finding System

ADC                             Aerodrome Control

ADI                              Aerodrome Control Instrument

ADS                             Automatic Dependent Surveillance

ADS-B                         Automatic Dependent Surveillance — Broadcast

ADS-C                         Automatic Dependent Surveillance — Contract

ADV                             Aerodrome Control Visual Rating

ADVS                          Advisory Service

AEA                             Association of European Airlines

AFIL                             Air-Filed Flight Plan

AFTN                           Aeronautical Fixed Telecommunication Network

AGA                            Aerodromes

AIC                               Aeronautical Information Circular

AIP                               Aeronautical Information Publication

AIRAC                         Aeronautical Information Regulation and Control

AIRAC SUP                AIRAC Supplement

AIREP                          Air-Report

AIRMET                      Information concerning en-route weather phenomena which may affect the safety                                     of low-level aircraft operations

AIS                               Aeronautical Information Service

ALRS                            Alerting Service

AMAN                        Arrival Manager

AMC                            Acceptable Means of Compliance

ANS                             Air Navigation Services

AP/FD                         Autopilot/Flight Director

APM                            Approach Path Monitor

APP                             Approach Control/Centre/Procedural Rating

APS                              Approach Control Surveillance Rating

APV                             Approach Procedure with Vertical guidance

APW                            Area Proximity Warning

ASDA                          Accelerate Stop Distance Available

ASM                            Airspace Management

ASMGCS                    Advanced Surface Movement Guidance and Control Systems

ATC                              Air Traffic Control

ATCEUC                     Air Traffic Controllers European Unions Coordination

ATCO                          Air Traffic Controller

ATCS                           Air Traffic Control Service

ATFCM                       Air Traffic Flow and Capacity Management

ATFM                          Air Traffic Flow Management

ATIS                             Automatic Terminal Information Service

ATM                            Air Traffic Management

ATMB                         Air Traffic Management — Basic Training (subject)

ATS                              Air Traffic Services

ATZ                              Aerodrome Traffic Zone

AVASI                         Advanced Visual Approach Slope Indicator

Beidou                       Chinese navigation satellite system

BIRDTAM                  Bird hazard NOTAM (NOTAM reporting bird hazard)

CANSO                       Civil Air Navigation Services Organisation

CAT                              Clear-Air Turbulence

CBA                             Cross-Border Area

CBT                              Computer-Based Training

CCO                             Continuous Climb Operations

CDO                             Continuous Descent Operations

CDR                             Conditional Route

CEM                            Collaborative Environmental Management

CISM                           Critical Incident Stress Management

CPDLC                         Controller-Pilot Data Link Communications

CPL                              Current Flight Plan

CWP                            Controller Working Position

DA                                Decision Altitude

DFTI                             Distance from Touchdown Indicator

DH                                Decision Height

DMAN                        Departure Manager

DME                            Distance-Measuring Equipment

Doc                              Document

EASA                           European Union Aviation Safety Agency

EAT                              Expected Approach Time

EATMP                       European Air Traffic Management Programme

EC                                 European Commission

ECAC                           European Civil Aviation Conference

EET                               Estimated Elapsed Time

EFIS                             Electronic Flight Instrument System

EGNOS                       European Geostationary Navigation Overlay Service

EGPWS                       Enhanced Ground Proximity Warning System

EQPS                           Equipment and Systems (subject)

EQPSB                        Equipment and Systems — Basic Training (subject)

ETF                               European Transport Workers’ Federation

EU                                European Union

EU ETS                        European Union Emissions Trading Scheme

EUROCONTROL      European Organisation for the Safety of Air Navigation

FA                                Fix to Altitude

FAB                              Functional Airspace Block

FAF                              Final Approach Fix

FAP                              Final Approach Point

FDPS                           Flight Data Processing System

FIR                               Flight Information Region

FIS                                Flight Information Service

FMS                             Flight Management System

FPB                              Flight Progress Board

FPL                               Flight Plan or Filed Flight Plan

FRA                              Free-Route Airspace

FRT                              Fixed Radius Transition

FTE                               Flight Technical Error

FUA                             Flexible Use of Airspace

Galileo                        European satellite navigation system

GBAS                          Ground-Based Augmentation System

GLONASS                  Global Orbiting Navigation Satellite System

GNSS                           Global Navigation Satellite System

GP                                Glide Path

GPS                             Global Positioning System

GPWS                         Ground Proximity Warning System

HF                                High Frequency

HFACS                        Human Factors Analysis & Classification System

HUM                           Human Factors (subject)

HUMB                        Human Factors — Basic Training (subject)

IACA                            International Air Carrier Association

IAF                               Initial Approach Fix

IAOPA                        International Council of Aircraft Owner and Pilot Associations

IATA                            International Air Transport Association

ICAO                           International Civil Aviation Organization

IF                                  Intermediate Approach Fix 

IFALPA                       International Federation of Airline Pilots’ Associations

IFATCA                       International Federation of Air Traffic Controllers’ Associations

IFPS                             Integrated Initial Flight Plan Processing System

IFR                               Instrument Flight Rules

ILS                                Instrument Landing System

IMC                             Instrument Meteorological Conditions

INS                               Inertial Navigation System

INTR                            Introduction to the course (subject)

INTRB                         Introduction to the course — Basic Training (subject)

IRS                               Inertial Reference System

IRVR                            Instrument Runway Visual Range

ISA                               International Standard Atmosphere

ITU                               International Telecommunications Union

LAM                            Local Area Multilateration

LAW                            Aviation Law (subject)

LAWB                          Aviation Law — Basic Training (subject)

LDA                              Landing Distance Available

LOA                             Letter of Agreement

LOC                              Localiser

LOPs                            Local Operating Procedures

LPV                              Localiser Performance with Vertical guidance

MAPt                          Missed Approach Point

MCMF                        Multi-Constellation, Multi-Frequency

MDA                           Minimum Descent Altitude

MDH                           Minimum Descent Height

MET                             Meteorology

METAR                       Meteorological Aviation Routine Weather Report

METB                          Meteorology — Basic Training (subject)

MLAT                          Multilateration

Mode A                      SSR identification code

Mode C                      SSR Mode C (pronounced: Mode Charlie)

Mode S                      Mode Select

MONA                        Monitoring Aids

MSAW                        Minimum Safe Altitude Warning

MTCD                         Medium-Term Conflict Detection

MWO                          Meteorological Watch Office

NAV                            Navigation (subject)

NAVAID                     Navigation(al) Aid

NAVB                          Navigation — Basic Training (subject)

NDB                             Non-Directional Beacon

No.                              Number

NOTAM                     Notice to Airmen

NPA                             Non-Precision Approach

NSE                              Navigation System Error

OCA                             Obstacle Clearance Altitude

OCH                             Obstacle Clearance Height

OJT                              On-the-Job Training

OLDI                            On-Line Data Interchange

PA                                Precision Approach

PANS                          Procedures for Air Navigation Services

PAPI                            Precision Approach Path Indicator

PAR                             Precision Approach Radar

PBN                             Performance-Based Navigation

PCN                             Pavement Classification Number

PCP                             Pilot Common Project

PDE                              Path Definition Error

PEAR (model)          People who do the job/Environment in which they work/Actions they                                                   perform/Resources necessary to complete the job

PEN                             Professional Environment (subject)

PENB                           Professional Environment — Basic Training (subject)

PSR                              Primary Surveillance Radar

PTP                              Part-Time Practice

QDM                           Inbound magnetic  bearing to the station

QDR                             Outbound magnetic bearing from the station

QFE                              Atmospheric pressure at aerodrome elevation

QNH                            Atmospheric pressure at mean sea level

QTF                              The position of the transmitting station according to the bearings taken by the D/F                                      station

RA                                Resolution Advisory (TCAS)

RAIM                          Receiver Autonomous Integrity Monitoring

RCC                              Rescue Coordination Centre

RF                                 Radius to Fix

RNAV                          Area Navigation

RNP                             Required Navigation Performance

RNP APCH                 Required Navigation Performance Approach

RNP AR APCH          Required Navigation Performance Authorisation Required Approach

RNP (AR) DEP           Required Navigation Performance Authorisation Required Departure

ROC                             Rate of Climb

RPAS                           Remotely Piloted Aircraft System

RTF                              Radiotelephony

RVR                             Runway Visual Range

RVSM                         Reduced Vertical Separation Minimum

SADIS                          Satellite Distribution of World Area Forecast System

SAR                              Search and Rescue

SARPs                         Standards and Recommended Practices (ICAO)

SBAS                           Satellite-Based Augmentation System

SDPS                           Surveillance Data Processing System

SELCAL                       Selective Calling

SES                               Single European Sky

SHELL (model)        Software, Hardware, Environment, Live ware, Live ware Model

SIB                               Safety Information Bulletin

SID                               Standard Instrument Departure (Route)

SIGMET                      Significant Meteorological Information

SMAN                         Surface Management

SMR                            Surface Movement Radar

SNOWTAM               NOTAM on SNOW conditions

SOPs                           Standard Operating Procedures

SPECI                          Aviation Selected Special Weather Report

SSR                              Secondary Surveillance Radar

STAR                           Standard Instrument Arrival (Route)

STCA                           Short-Term Conflict Alert

SVFR                           Special Visual Flight Rules

TA                                Traffic Alert (TCAS)

TACAN                       UHF Tactical Air Navigation Aid

TAF                              Terminal Area (Aerodrome) Forecast

TAWS                          Terrain Awareness and Warning System

TBO                             Trajectory-Based Operations

TCAC                           Tropical Cyclone Advisory Centre

TCAS                           Traffic Alert and Collision Avoidance System

TODA                          Take-Off Distance Available

TORA                          Take-Off Run Available

TRA                              Temporary Reserved Airspace or Temporary Reserved Area

TRM                            Team Resource Management

TSA                              Temporary Segregated Area

TSE                               Total System Error

TWR                            Tower Control Unit (Aerodrome Control Tower)

UAS                             Unmanned Aircraft System

UDF                             Ultra High Frequency Direction Finder

UHF                             Ultra High Frequency

UTC                             Coordinated Universal Time

VAAC                          Volcanic Ash Advisory Centre

VASI                            Visual Approach Slope Indicator

VDF                             Very High Frequency Direction Finder

VFR                              Visual Flight Rules

VHF                             Very High Frequency

VMC                            Visual Meteorological Conditions

VNAV                         Vertical Navigation

VOLMET                    Routine Weather Reports Broadcast on VHF

VOR                             VHF Omni-directional Radio Range

WAFC                         World Area Forecast Centre

WAFS                          World Area Forecast System

WAM                          Wide Area Multilateration

WGS-84                     World Geodetic System 84

WMO                          World Meteorological Organization

[applicable from 4 August 2024 - ED Decision 2023/011/R]