FullDescription:Air Traffic Service

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ACC nominal capacity

Link Semantic Value
Term ACC nominal capacity
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Broader term

Area control centre (ACC)

Narrower term


Abbreviation

Definition

Computed capacity derived from declared capacity of the individual sectors within the ACC.

Definition Source

ATC Capacity Target Setting - A User Guide V 1.0

Note

Can be determined for any sector configuration Units: Mvts/hr

ACC nominal saturated capacity

Link Semantic Value
Term ACC nominal saturated capacity
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Broader term

Area control centre (ACC)

Narrower term


Abbreviation

Definition

Theoretical maximum ACC capacity at the point where every sector is saturated.

Definition Source

ATC Capacity Target Setting - A User Guide V 1.0

Note

Calculated by the EUROCONTROL Central Flow Management Unit (CFMU), by dividing the sum of the individual sector capacities by the average number of active sectors crossed by each flight. Units: Mvts/hr

ACC nominal zero delay capacity

Link Semantic Value
Term ACC nominal zero delay capacity
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Broader term

Area control centre (ACC)

Narrower term


Abbreviation

Definition

ACC capacity at the point where the first sector becomes saturated.

Definition Source

ATC Capacity Target Setting - A User Guide V 1.0

Note

Calculated using the FACET (FAP ACC Capacity Evaluation Tool) simulation. It is the sum of individual sector capacities, multiplied by the minimum Capacity Demand ratio or divided by the maximum Demand Capacity ratio ((10))((10))Units: Mvts/hr

ACC observed capacity

Link Semantic Value
Term ACC observed capacity
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Broader term

Area control centre (ACC)

Narrower term


Abbreviation

Definition

Effective capacity assessed from the observed air traffic, and the actual ATFM delays, using the CASA algorithm of the Central Flow Management Unit (CFMU).

Definition Source

ATC Capacity Target Setting - A User Guide V 1.0

Note

Units: Mvts/hr

AIRMET

Link Semantic Value
Term AIRMET
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Significant Meteorological Information(SIGMET)

Broader term


Narrower term


Abbreviation

Definition

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

Definition Source

ICAO, Official Definition, DOC 8400 Procedures for Air Navigation Services — ICAO Abbreviations and Codes 2004, 6th ed.

Note

ASHTAM

Link Semantic Value
Term '
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SNOWTAM

Broader term

Notice to airmen

Narrower term


Abbreviation

Definition

A special series NOTAM notifying by means of a specific format change in activity of a volcano, a volcanic eruption and/or volcanic ash cloud that is of significance of aircraft operations

Definition Source

ICAO/OACI, "International Civil Aviation Vocabulary", Doc. 9713, Vol.1, 1998

Note

ATCO in OPS

Link Semantic Value
Term ATCO in OPS
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Mandatory for


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ATCO on operational duty

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Broader term

air traffic controller (ATCO)

Narrower term


Abbreviation

Definition

An ATCO who is participating in an activity that is either directly related to the control of traffic or is a necessary requirement for an ATCO to be able to control traffic. Such activities include manning a position, refresher training and supervising on-the-job trainee controllers, but do not include participating in special projects, teaching at a training academy, or providing instruction in a simulator.

Definition Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Note

ATCO on other duties

Link Semantic Value
Term ATCO on other duties
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Broader term

air traffic controller (ATCO)

Narrower term


Abbreviation

Definition

An ATCO who is participating in an activity outside OPS such as special projects, teaching at a training academy, providing instruction in a simulator, working in a full time management position, etc.

Definition Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Note

ATFM departure slot

Link Semantic Value
Term ATFM departure slot
Status


Mandatory for

EU Commission

Contexts


Categories


Synonyms

air traffic flow management departure slot

Related entries

Calculated Take-Off Time

Broader term


Narrower term


Abbreviation

Definition

a calculated take-off time attributed by the central unit for ATFM with a time tolerance managed by the local ATS unit.

Definition Source

COMMISSION REGULATION (EU) No 255/2010 of 25 March 2010 laying down common rules on air traffic flow management

Note

ATFM measure

Link Semantic Value
Term ATFM measure
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air traffic flow management measure

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Broader term


Narrower term


Abbreviation

Definition

the actions taken to perform air traffic flow management and capacity management.

Definition Source

COMMISSION REGULATION (EU) No 255/2010 of 25 March 2010 laying down common rules on air traffic flow management

Note

ATS communication

Link Semantic Value
Term ATS communication
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Mandatory for


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air traffic services communication

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Broader term


Narrower term


Abbreviation

ATSC

Definition

Communication related to air traffic services including air traffic control, aeronautical and meteorological information, position reporting and services related to safety and regularity of flight. This communication involves one or more air traffic service administrations. This term is used for purposes of address administration.

Definition Source

ICAO, Official definition added to Annex 10/III (Aeronautical Telecommunications ) as per Amdt 73 (05/11/1998).

Note

ATS direct speech circuit

Link Semantic Value
Term ATS direct speech circuit
Status


Mandatory for


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Synonyms

air traffic service direct speech circuit

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Air Traffic Service (ATS)

aeronautical fixed service (AFS)

Broader term


Narrower term


Abbreviation

Definition

An aeronautical fixed service (AFS) telephone circuit, for direct exchange of information between air traffic services (ATS) units.

Definition Source

ICAO/OACI, "International Civil Aviation Vocabulary", Doc. 9713, Vol.1, 1998

Note

ATS environment data base

Link Semantic Value
Term ATS environment data base
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Broader term


Narrower term


Abbreviation

ENV

Definition

A specific part of the Central Flow Management Unit (CFMU) Data Base containing all environment data concerning airspace organisation and structure, ACC operational organisation and ATC capacities.

Definition Source

EUROCONTROL (2004) EATM glossary, June 2004

and EUROCONTROL MANUAL FOR AIRSPACE PLANNING, Volume 2 (2003)

Note

The ATS Environment Data Base is used by the CFMU systems for the calculation of flight profiles taking account of all the airspace constraints.

ATS unit sector configuration

Link Semantic Value
Term ATS unit sector configuration
Status


Mandatory for

EU

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air traffic service unit sector configuration

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Broader term


Narrower term


Abbreviation

Definition

the four dimensional description of an ATS unit airspace sector, or group of sectors, which may be operated on a permanent or temporary basis.

Definition Source

COMMISSION REGULATION (EU) No 255/2010 of 25 March 2010 laying down common rules on air traffic flow management

Note

Aerodrome Flight Information Service

Link Semantic Value
Term Aerodrome Flight Information Service
Status


Mandatory for


Contexts

EUROCONTROL

Categories


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aerodrome flight information unit

Aerodrome Traffic Zone (ATZ)

Aerodrome Flight Information Service Officer (AFISO)

Broader term


Narrower term


Abbreviation

AFIS

Definition

A service provided by Aerodrome Flight Information Service Officers (AFISO) to give information useful for the safe and efficient conduct of flights in the Aerodrome Traffic Zone (ATZ) and to give taxi instructions on the apron and manoeuvring area.

Definition Source

UNITED KINGDOM (2009), UK AIP,GEN 3-3 - 1, Civil Aviation Authority, GEN 3.3 - AIR TRAFFIC SERVICES

Note

From the information received pilots flying within the ATZ will be able to decide the appropriate course of action to be taken to ensure the safety of flight.

Attachment

ICAO Circular 211-AN/128 - AFIS (PDF)

Aerodrome control

Link Semantic Value
Term aerodrome control
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aerodrome control tower

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aerodrome control service

Broader term


Narrower term


Abbreviation

TWR

Definition

A unit established to provide air traffic control service to aerodrome traffic

Definition Source

ICAO (2007) AN 3 Meteorological Service for International Air Navigation, via ICAO Terminology Database URL: https://icaosec.icao.int/sec/ICAOTERM/asp/General/Frame.asp

Note

Aerodrome control service

Link Semantic Value
Term aerodrome control service
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aerodrome control

Broader term

Air traffic control service

Narrower term


Abbreviation

Definition

Air traffic control service for aerodrome traffic.

Definition Source

ICAO (2005) Official definition, ANNEX 2 Rules of the Air 2005

Note

Aerodrome control tower

Link Semantic Value
Term aerodrome control tower
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aerodrome control

Broader term

Control Tower

Narrower term


Abbreviation

Definition

A unit established to provide air traffic control service to aerodrome traffic

Definition Source

ICAO (1990), Official definition, "Annex 2 to the Convention on International Civil Aviation: Rules of the Air", July 1990

Note

Aerodrome control unit

Link Semantic Value
Term aerodrome control unit
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Broader term


Narrower term


Abbreviation

Definition

An ATC unit in charge of the aircraft for landing and take-off phases.

Definition Source

EUROCONTROL (2004) EATM glossary of terms, June 2004

Note

Aerodrome controller

Link Semantic Value
Term aerodrome controller
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aerodrome control

aerodrome control tower

Broader term


Narrower term


Abbreviation

ADC

Definition

[a person]"normally responsible for operations on the runway and aircraft flying within the area of responsibility of the aerodrome control tower"

Definition Source

ICAO (2001), PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed., Chap. 7 (7.1.1.3)

Note

Aerodrome flight information unit

Link Semantic Value
Term aerodrome flight information unit
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Mandatory for


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AFIS unit

Related entries

Aerodrome Flight Information Service (AFIS)

flight information service (FIS)

Broader term


Narrower term


Abbreviation

Definition

A unit established to provide a flight information service to aerodrome traffic at an aerodrome designated for use by International General Aviation (IGA) and where the provision of an aerodrome control service is not justified, or is not justified on a 24 hour basis..

Definition Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Note

Aerodrome traffic

Link Semantic Value
Term aerodrome traffic
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aerodrome traffic circuit

manoeuvering area

Broader term


Narrower term


Abbreviation

Definition

All traffic on the manoeuvring area of an aerodrome and all aircraft flying in the vicinity of an aerodrome.

Definition Source

ICAO, Official definition, ANNEX 2 Rules of the Air 2005

Note

An aircraft is in the vicinity of an aerodrome when it is in, entering or leaving an aerodrome traffic circuit.

Aerodrome traffic circuit

Link Semantic Value
Term aerodrome traffic circuit
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aerodrome traffic

Broader term


Narrower term


Abbreviation

Definition

The specified path to be flown by aircraft operating in the vicinity of an aerodrome.

Definition Source

ICAO, Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] chap. 1

Note

Air traffic control assistant

Link Semantic Value
Term air traffic control assistant
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air traffic controller (ATCO)

Broader term


Narrower term


Abbreviation

Definition

An employee assigned to perform non-control functions in an air traffic control unit. This includes flight data assistants but excludes technical support staff.

Definition Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Note

Air traffic control clearance

Link Semantic Value
Term Air traffic control clearance
Status


Mandatory for

ICAO; EU

Contexts

SESAR

Categories


Synonyms

ATC clearance

clearance

Related entries


Broader term


Narrower term


Abbreviation

Definition

Authorization for an aircraft to proceed under conditions specified by an air traffic control unit.

Definition Source

1. ICAO (2007) Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2007, 15th ed. (Amdt 4, 15/11/2012)

2. SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00)

Note

For convenience, the term “air traffic control clearance” is frequently abbreviated to “clearance” when used in appropriate contexts. The abbreviated term “clearance” may be prefixed by the words “taxi”, “take-off”, “departure”, “en-route”, “approach” or “landing” to indicate the particular portion of flight to which the air traffic control clearance relates.

Lexicon Release

Lexicon Release 2015.1

Air traffic control service

Link Semantic Value
Term air traffic control service
Status


Mandatory for

EUROCONTROL SESAR

Contexts

SESAR

EAEA

Categories


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air traffic controller

Broader term


Narrower term


Abbreviation

Definition

A service provided for the purpose of:

a) preventing collisions:

1. between aircraft, and

2. on the manoeuvring area between aircraft and obstructions; and

b) expediting and maintaining an orderly flow of air traffic.

Definition Source

ICAO, Official definition, AN 2 Rules of the Air 2005

Note

Lexicon Release

Lexicon Release 2015.2

Air traffic control task

Link Semantic Value
Term air traffic control task
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air traffic control

Broader term


Narrower term


Abbreviation

Definition

An operational ATC function or sub-function (e.g. clearance delivery, tower control, departure control).

Definition Source

EUROCONTROL, EATM glossary 2004

Note

Air traffic control unit

Link Semantic Value
Term air traffic control unit
Status


Mandatory for


Contexts


Categories


Synonyms

ATC unit

Related entries


Broader term

air traffic control

Narrower term


Abbreviation

Definition

A generic term meaning variously, area control centre, approach control unit or aerodrome control tower.

Definition Source

ICAO, Official definition, modified by: Amdt 40 to An 11 (01/11/2001), Amdt 36 to An 2 (01/11/2001), and PANS-ATM, 14th ed. (01/11/2001)

Note

Air traffic controller

Link Semantic Value
Term air traffic controller
Status


Mandatory for


Contexts


Categories


Synonyms

air traffic control officer

Related entries

air traffic control service

Broader term


Narrower term

ATCO on other duties

ATCO in OPS

Abbreviation

ATCO

Definition

1. An air traffic controller, qualified in accordance with Annex 1 — Personnel Licensing, and holding a rating appropriate to the assigned functions.

2. A person authorized to provide air traffic control services.

Definition Source

1. ICAO, Official definition, OPLINKP/1-WP/33 App. I

2. ICAO, DOC 9426 Air Traffic Services Planning Manual 1984, p. V-1-1-5

Note

EUROCONTROL definition:

The holder of a valid ATC licence which permits the individual to control traffic at a specific operational unit. Executive controllers, planning controllers, and supervisors are ATCOs. For the purpose of performance assessment, the total number of ATCOs that hold a valid licence can be broken down into two subcategories: ATCO in OPS and ATCO on other duties.

Note Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Air traffic service receiving unit

Link Semantic Value
Term Air traffic service receiving unit
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Mandatory for


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Air traffic services unit

Broader term


Narrower term


Abbreviation

R-ATSU

Definition

The ATS unit that will next assume control responsibility of a flight.

Definition Source

EUROCONTROL (2004) EATM glossary, June 2004

Note

Air traffic services communications administrative domain

Link Semantic Value
Term Air traffic services communications administrative domain
Status


Mandatory for


Contexts


Categories


Synonyms

ATSC administrative domain

Related entries

aeronautical telecommunication network (ATN)

Broader term

administrative domain

Narrower term


Abbreviation

Definition

an ATN Administrative Domain owned and/or administered by an air traffic services organisation.

Definition Source

EUROCONTROL (2004) EATM glossary, June 2004

Note

Air traffic services facilities notification function

Link Semantic Value
Term Air traffic services facilities notification function
Status


Mandatory for


Contexts


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ATS facilities notification function

Related entries


Broader term


Narrower term


Abbreviation

Definition

An ARINC 622 function to enable aircraft to establish data link communications with Air Traffic Control Facilities.

Definition Source

EUROCONTROL (2004) EATM glossary, June 2004

Note

ARINC = Aeronautical Radio, Inc.

Air traffic services reporting office

Link Semantic Value
Term air traffic services reporting office
Status


Mandatory for


Contexts


Categories


Synonyms

ATS reporting office

Related entries


Broader term


Narrower term


Abbreviation

ARO

Definition

A unit established for the purpose of receiving reports concerning air traffic services and flight plans submitted before departure.

Definition Source

ICAO, Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444]

Note

An air traffic services reporting office may be established as a separate unit or combined with an existing unit, such as another air traffic services unit, or a unit of the aeronautical information service.

Air traffic services unit

Link Semantic Value
Term air traffic services unit
Status


Mandatory for


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ATS unit

Related entries


Broader term


Narrower term


Abbreviation

ATSU

Definition

A generic term meaning variously, air traffic control unit, flight information centre or air traffic services reporting office.

Definition Source

ICAO (2007) Official definition

ANNEX 3 Meteorological Service for International Air Navigation 2010

ANNEX 11 Air Traffic Services 2001

Note

Air-filed flight plan

Link Semantic Value
Term air-filed flight plan
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Flight plan

current flight plan

filed flight plan

operational flight plan

repetitive flight plan

Broader term


Narrower term


Abbreviation

AFIL

Definition

a flight plan provided to an air traffic services unit by an aircraft during its flight.

Definition Source

ICAO/OACI, "International Civil Aviation Vocabulary", Doc. 9713, Vol.1, 1998

Note

Alerting service

Link Semantic Value
Term alerting service
Status


Mandatory for


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flight information centre

Broader term


Narrower term


Abbreviation

ALRS

Definition

A service provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.

Definition Source

ICAO, Official definition, AN 2 Rules of the Air 2005

Note

Alternate aerodrome

Link Semantic Value
Term alternate aerodrome
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Mandatory for


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Broader term


Narrower term


Abbreviation

ALTN

Definition

An aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or to land at the aerodrome of intended landing. Alternate aerodromes include the following:

a) Take-off alternate : an alternate aerodrome at which an aircraft can land should this become necessary shortly after take-off and it is not possible to use the aerodrome of departure;

b) En-route alternate : an aerodrome at which an aircraft would be able to land after experiencing an abnormal or emergency condition while en route;

c) ETOPS en-route alternate: a suitable and appropriate alternate aerodrome at which an aeroplane would be able to land after experiencing an engine shut-down or other abnormal emergency condition while en route in an ETOPS operation.

d) Destination alternate : an alternate aerodrome to which an aircraft may proceed should it become impossible or inadvisable to land at the aerodrome of intended landing.

Definition Source

ICAO (2007) Annex 2, Annex 3, Annex 6/I, Annex 11; Doc. 9713

Note

"The aerodrome from which a flight departs may also be an en-route or a destination alternate aerodrome for that flight." (source: ICAO doc. 9713)

Approach control office

Link Semantic Value
Term approach control office
Status


Mandatory for


Contexts


Categories


Synonyms

approach control service

approach control

Related entries


Broader term


Narrower term


Abbreviation

APP

Definition

A unit established to provide air traffic control service to controlled flights arriving at, or departing from, one or more aerodromes.

Definition Source

ICAO, Official definition, ANNEX 2 Rules of the Air, 2005

Note

Appropriate ATS authority

Link Semantic Value
Term appropriate ATS authority
Status


Mandatory for


Contexts


Categories


Synonyms

appropriate Air Traffic Services authority

Related entries

Air Traffic Service

Broader term


Narrower term


Abbreviation

Definition

The relevant authority designated by the State responsible for providing air traffic services in the airspace concerned.

Definition Source

ICAO (2010) Official definition

AN 2 Rules of the Air 2005

AN 3 Meteorological Service for International Air Navigation 2010

AN 11 Air Traffic Services 2001

Note

Area control centre

Link Semantic Value
Term area control centre
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

ACC

Definition

A unit established to provide air traffic control service to controlled flights in control areas under its jurisdiction.

Definition Source

ICAO (2010) Official definition, AN 2 Rules of the Air 2005, AN 3 Meteorological Service for International Air Navigation 2010, AN 11 Air Traffic Services 2001

Note

Area control service

Link Semantic Value
Term area control service
Status


Mandatory for


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area control centre

control area

Broader term


Narrower term


Abbreviation

Definition

Air traffic control service for controlled flights in control areas.

Definition Source

ICAO, Official definition, ANNEX 11 Air Traffic Services 2001

Note

Calculated Take-Off Time

Link Semantic Value
Term Calculated Take-Off Time
Status


Mandatory for


Contexts

EUROCONTROL, SESAR, ICAO

Categories


Synonyms


Related entries

ATFM departure slot

Actual Take-Off Time (ATOT)

Estimated Take-Off Time (ETOT)

Target Take-Off Time (TTOT)

Broader term


Narrower term


Abbreviation

CTOT

Definition

1.A time calculated and issued by the Central Flow Management unit, as a result of tactical slot allocation, at which a flight is expected to become airborne.

2.An Air Traffic Flow & Capacity Management (ATFCM) departure slot, forming part of an Air Traffic Control (ATC) clearance, which is issued to a flight affected by Network Management regulations. It is defined by a time and tolerance (-5 to +10 minutes) during which period the flight is expected to take-off.

Definition Source

1. EUROCONTROL/IATA/ACI, Airport CDM Implementation Manual, V.4, March 2012

2. NM Glossary (2014)

Note

Reference: ICAO Doc 7030/4 – EUR, Table 7

Lexicon Release

Lexicon Release 2016.1

Clearance function

Link Semantic Value
Term clearance function
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Mandatory for


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Air traffic control clearance

Broader term


Narrower term


Abbreviation

Definition

The formulation and transmission of a clearance by an air traffic control unit as well as the acknowledgement and acceptance of such clearance by the pilot.

Definition Source

ICAO, Doc 9426, 1984, p. V-1-1-4

Note

Clearance limit

Link Semantic Value
Term clearance limit
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Mandatory for


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air traffic control clearance

Broader term


Narrower term


Abbreviation

Definition

The point to which an aircraft is granted an air traffic control clearance.

Definition Source

ICAO, Official definition

ANNEX 11 Air Traffic Services 2001

PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed. (Amdt 3, 29/06/2004)

ANNEX 2 Rules of the Air 2005

Note

Control area

Link Semantic Value
Term control area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

CTA

Definition

A controlled airspace extending upwards from a specified limit above the earth.

Definition Source

ICAO, Official definition

ANNEX 2 Rules of the Air 2005

ANNEX 3 Meteorological Service for International Air Navigation 2010

ANNEX 11 Air Traffic Services 2001

Note

Controlled Airspace

Link Semantic Value
Term Controlled Airspace
Status


Mandatory for


Contexts


Categories


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Related entries

uncontrolled airspace

Broader term


Narrower term


Abbreviation

CAS

Definition

airspace type of defined dimensions within which air traffic control service is provided to IFR flights and to VFR flights in accordance with the airspace classification.

Definition Source

ICAO (2007), Official definition (Annex 2 and 11, PANS-ATM), "International Civil Aviation Vocabulary", Doc. 9713

Note

The controlled airspace includes control areas, airways and control zones and, depending on type of flight and air traffic service provided is classified as class A,B,C,D, and E.

Current flight plan

Link Semantic Value
Term current flight plan
Status


Mandatory for


Contexts


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Related entries

air-filed flight plan

flight plan

filed flight plan

operational flight plan

repetitive flight plan

Broader term


Narrower term


Abbreviation

Definition

The flight plan, including changes, if any, brought about by subsequent clearances.

Definition Source

ICAO, Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed. (Amdt 3, 29/06/2004)

Note

When the word 'message' is used as a suffix to this term, it denotes the content and format of the current flight plan data sent from one unit to another.

Declared capacity

Link Semantic Value
Term '
Status


Mandatory for


Contexts


Categories


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Broader term


Narrower term


Abbreviation

Definition

A measure of the ability of the ATC system or any of its subsystems or operating positions to provide service to aircraft during normal activities. It is expressed as the number of aircraft entering a specified portion of airspace in a given period of time, taking due account of weather, ATC unit configuration, staff and equipement available, and any other factors that may affect the workload of the controller responsible for the airspace.

Definition Source

ICAO, Official definition, Annex 11, Air Traffic Services (2011)

Note

Emergency phase

Link Semantic Value
Term emergency phase
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

A generic term meaning, as the case may be, uncertainty phase, alert phase or distress phase.

Definition Source

ICAO, Official definition, ANNEX 11 Air Traffic Services 2001, 13th ed. (Amdt 42, 14/07/2004)

Note

Filed flight plan

Link Semantic Value
Term filed flight plan
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

flight plan

current flight plan

air-filed flight plan

operational flight plan

repetitive flight plan

Broader term


Narrower term


Abbreviation

FPL

Definition

The flight plan as filed with an ATS unit by the pilot or a designated representative, without any subsequent changes.

Definition Source

ICAO, Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed. (Amdt 3, 29/06/2004)

Note

When the word 'message' is used as a suffix to this term, it denotes the content and format of the filed flight plan data as transmitted.

Flight information

Link Semantic Value
Term flight information
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flight information service

flight information centre

Broader term


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Abbreviation

Definition

Information useful for the safe and efficient conduct of flight, including information on air traffic, meteorological conditions, aerodrome conditions on air route facilities.

Definition Source

ICAO, DOC 9426 Air Traffic Services Planning Manual 1984, p. V-1-1-7

Note

Flight information centre

Link Semantic Value
Term flight information centre
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flight information

flight information service

alerting service

Broader term


Narrower term


Abbreviation

FIC

Definition

A unit established to provide flight information service and alerting service.

Definition Source

ICAO, Official definition, AN 2 Rules of the Air, 2005

Note

As indicated by its title, the function of an FIC is to provide “information” useful for the safe and efficient conduct of flights; this is different from the function of units that carry out “control” service (e.g. ACCs), which provide a service aimed at the prevention of collisions as well as the maintenance of an orderly flow of air traffic. [Ref. ICAO Doc 9377, 2008, 4th ed., p. 2-1]

Flight information service

Link Semantic Value
Term flight information service
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flight information

flight information centre

Broader term


Narrower term

flight information service position

Abbreviation

FIS

Definition

A service provided for the purpose of giving advice and information useful for the safe and efficient conduct of flights.

Definition Source

ICAO, Official definition, added to An 10/III by Amdt 73 (05/11/1998)

Note

Flight information service position

Link Semantic Value
Term flight information service position
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FIS position

Related entries


Broader term

flight information service (FIS)

Narrower term


Abbreviation

Definition

Position within an ACC providing services to non controlled flights for the purpose of giving advice and information useful for the safe and efficient conduct of flights.

Definition Source

EUROCONTROL Specification for Economic Information Disclosure, Edition 2.6, Edition date: 31.12.2008, Reference nr: EUROCONTROL-SPEC-0117

Note

Flight plan

Link Semantic Value
Term flight plan
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air-filed flight plan

current flight plan

filed flight plan

operational flight plan

repetitive flight plan

System flight plan

Broader term


Narrower term


Abbreviation

PLN

Definition

Specified information provided to air traffic services units, relative to an intended flight or portion of a flight of an aircraft.

Definition Source

ICAO, Official definition, AN 11 Air Traffic Services 2001, and PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed. (Amdt 3, 29/06/2004)

Note

Flight plan cancellation message

Link Semantic Value
Term Flight plan cancellation message
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flight plan

Broader term


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Abbreviation

CNL

Definition

1. message [...] transmitted when a flight, for which basic flight plan data has been previously distributed, has been cancelled. The ATS unit serving the departure aerodrome shall transmit the CNL message to ATS units which have received basic flight plan data.

2. message [...] submitted to the IFPS for processing for any flight plan that has been submitted to and processed by the IFPS and is subsequently to be cancelled.

Definition Source

1. ICAO, doc. 4444, Chapter 11, 11.4.2.2.5

2. EUROCONTROL, NM Glossary (2014)

Flight plan data

Link Semantic Value
Term flight plan data
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Broader term

flight plan

Narrower term


Abbreviation

Definition

1. Data selected from the flight plan for purposes of processing, display or transfer.

2. a generic term to denote all flight plan related data known to a system such as : Callsign, Aircraft type, Departure and destination aerodrome, Landing runway and take-off runway, Planned flight levels (e.g. EFL, NFL, IFL, XFL, etc.), Planned route (set of way-points), ETAs and ATAs, etc.

Definition Source

1. ICAO (1984) Doc. 9426

2. EUROCONTROL, SASS-C Glossary

Note

Flight plan suspension

Link Semantic Value
Term flight plan suspension
Status


Mandatory for

EU

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Broader term


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Abbreviation

Definition

the process initiated by an entity performing ATFM to ensure that a change is made to the flight plan by the operator before the execution of the flight.

Definition Source

COMMISSION REGULATION (EU) No 255/2010 of 25 March 2010 laying down common rules on air traffic flow management

Note

Indicated airspeed

Link Semantic Value
Term indicated airspeed
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Abbreviation

IAS

Definition

The uncorrected reading on the airspeed indicator.

Definition Source

ICAO doc. 9426, Air Traffic Services Planning Manual

Note

Individual Flight Plan Identity code

Link Semantic Value
Term Individual Flight Plan Identity code
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Integrated Initial Flight Plan Processing System (IFPS)

Enhanced Tactical Flow Management System (ETFMS)

Broader term

Flight plan

Narrower term


Abbreviation

IFPLID

Definition

A unique identifier assigned to a flight by IFPS. It will be in all ADEXP messages issued by Network Management.

ETFMS will accept the IFPLID when provided in an incoming message in ADEXP format. Therefore, messages originated by AOs may include the IFPLID, preferably only if generated automatically. Aircraft Operators may extract the IFPLID from the ACK message.

Definition Source

EUROCONTROL, NM Glossary (2014)

Note

Instrument Meteorological Conditions

Link Semantic Value
Term Instrument Meteorological Conditions
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Instrument Flight Rules

Broader term


Narrower term


Abbreviation

IMC

Definition

Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, less than the minima specified for visual meteorological conditions.

Definition Source

ICAO (2007) Official definition modified by Amdt 16 to An 6/II (09/11/1995)

Note

Note 1.— [An 11] The specified minima for visual meteorological conditions are contained in Annex 2.

Note 2.— [PANS-ATM] In a control zone, a VFR flight may proceed under instrument meteorological conditions if and as authorized by air traffic control.

International Airways Volcano Watch

Link Semantic Value
Term International Airways Volcano Watch
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Significant Meteorological Information(SIGMET)

Volcanic Ash Advisory Centre (VAAC)

Broader term


Narrower term


Abbreviation

IAVW

Definition

International arrangements for monitoring and providing warnings to aircraft of volcanic ash in the atmosphere.

Definition Source

ICAO, Official definition, Definition added to An 3 by Amdt 71 (5/11/1998) and modified by Amdt 72 to An 3,14th ed (1/11/2001).

Note

The IAVW is based on the cooperation of aviation and non-aviation operational units using information derived from observing sources and networks that are provided by States. The watch is coordinated by ICAO with the cooperation of other concerned international organizations.

Local ATFM unit

Link Semantic Value
Term local ATFM unit
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Mandatory for


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local air traffic flow management unit

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Broader term


Narrower term


Abbreviation

Definition

a flow management entity operating on behalf of one or more other flow management entities as the interface between the central unit for ATFM and an ATS unit or a group of such units.

Definition Source

COMMISSION REGULATION (EU) No 255/2010 of 25 March 2010 laying down common rules on air traffic flow management

Note

Minimum time to line-up for take-off

Link Semantic Value
Term minimum time to line-up for take-off
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Abbreviation

MINLINEUP

Definition

1. The minimum time required for a flight, which has declared itself ready to depart, to get from its present holding position to airborne.

2. Amount of minutes to be entered in a Ready to depart message REA.

Definition Source

1. EUROCONTROL (2007), EUROCONTROL Specification for ATS Data Exchange Presentation (ADEXP), Ed. 3

2. EUROCONTROL, NM Glossary (2014)

Notice to airmen

Link Semantic Value
Term notice to airmen
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SNOWTAM ASHTAM

Digital NOTAM

Abbreviation

NOTAM

Definition

notice distributed by means of telecommunication containing information concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential to personnel concerned with flight operations

Definition Source

ICAO Doc. 9569, N13

Note

Operational flight plan

Link Semantic Value
Term operational flight plan
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flight plan

filed flight plan

current flight plan

air-filed flight plan

repetitive flight plan

Broader term


Narrower term


Abbreviation

Definition

The operator's plan for the safe conduct of the flight based on considerations of helicopter performance, other operating limitations and relevant expected conditions on the route to be followed and at the heliports concerned.

Definition Source

ICAO, Official definition, AN 6/III Operation of Aircraft — International Operations — Helicopters 2001, 5th ed., amdt. 9, chap. 1

Note

Repetitive flight plan

Link Semantic Value
Term repetitive flight plan
Status


Mandatory for


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EAEA

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flight plan

operational flight plan

current flight plan

filed flight plan

air-filed flight plan

Broader term


Narrower term


Abbreviation

RPL

Definition

1. A flight plan related to a series of frequently recurring, regularly operated individual flights with identical basic features, submitted by an operator for retention and repetitive use by ATS units.

2. An integral part of the Network Operations flight plan processing system serving all Air Traffic Services (ATS) Units within the Flight Plan Message (FPM) Distribution Area. The system receives, processes and stores bulk Repetitive Flight Plan details submitted by the Aircraft Operators.

Definition Source

1. ICAO, Official definition, PANS-ATM Procedures for Air Navigation Services — Air Traffic Management [Doc 4444] 2001, 14th ed., Chap. 1

2. EUROCONTROL, NM Glossary (2014)

Note

Replacement Flight Plan Procedure

Link Semantic Value
Term Replacement Flight Plan Procedure
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Broader term

flight plan

Narrower term


Abbreviation

RFP

Definition

A flight planning procedure whereby the flight plan originator substitutes the original routeing for an alternative one.

Definition Source

ICAO Doc 7030 - EUR, Chapter 2

Note

SNOWTAM

Link Semantic Value
Term '
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ASHTAM

Broader term

Notice to airmen

Narrower term


Abbreviation

Definition

A special series NOTAM notifying the presence or removal of hazardous conditions due to snow, ice, slush or standing water associated with snow, slush and ice on the movement area, by means of a specific format

Definition Source

ICAO DOC 8400 Procedures for Air Navigation Services — ICAO Abbreviations and Codes 2004, 6th ed.

Note

Significant Meteorological Information

Link Semantic Value
Term Significant Meteorological Information
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Mandatory for


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Significant Meteorological Message

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AIRMET

Broader term


Narrower term


Abbreviation

SIGMET

Definition

Information concerning en-route weather phenomena which may affect the safety of aircraft operations.

Definition Source

ICAO, Official definition, Doc. 8400/4 (2004)

Note

System flight plan

Link Semantic Value
Term system flight plan
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Flight Data Processing System (FDPS)

Flight plan

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Abbreviation

Definition

Information derived from the flight plan of a specific flight held within an FDPS.

Definition Source

EUROCONTROL (2003) Standard for On-line Data Interchange, DPS-ET1-ST06-STD-01-00

Note

Transfer of control point

Link Semantic Value
Term transfer of control point
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Abbreviation

TCP

Definition

A defined point located along the flight path of an aircraft, at which the responsibility for providing air traffic control service to the aircraft is transferred from one control unit or control position to the next.

Definition Source

ICAO, Official definition, AN 11 Air Traffic Services 2001

Note

Volcanic Ash Advisory Centre

Link Semantic Value
Term Volcanic Ash Advisory Centre
Status


Mandatory for


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EAEA

Categories


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International Airways Volcano Watch (IAVW)

Broader term


Narrower term


Abbreviation

VAAC

Definition

A meteorological centre designated by regional air navigation agreement to provide advisory information to meteorological watch offices, area control centres, flight information centres, world area forecast centres and international OPMET databanks regarding the lateral and vertical extent and forecast movement of volcanic ash in the atmosphere following volcanic eruptions.

Definition Source

ICAO, Official definition, added to An 3 by Amdt 71 (5/11/1998)

Note