FullDescription:Operational category

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4D Contract

Link Semantic Value
Term 4D Contract
Status


Mandatory for


Contexts

SESAR

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Broader term


Narrower term


Abbreviation

Definition

An ATC clearance that prescribes the containment of the trajectory in all 4 dimensions for the period of the contract during which the uncertainty associated with future predicted position does not increase with the prediction horizon:

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ASAS-Crossing and Passing

Link Semantic Value
Term ASAS-Crossing and Passing
Status


Mandatory for


Contexts

SESAR

Categories


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Related entries

Airborne Separation Assistance System (ASAS)

Broader term


Narrower term


Abbreviation

Definition

An ASAS application presenting the controller with an opportunity to devolve the crossing and passing task to the pilot, on an individual aircraft basis, whilst retaining responsibility for separation from other aircraft.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ASAS-Self Separation

Link Semantic Value
Term ASAS-Self Separation
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Mandatory for


Contexts

SESAR

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Airborne Separation Assistance System

Broader term


Narrower term


Abbreviation

Definition

In ASAS Self-Separation the aircrew are the designated separator for a defined segment of a flight during which they shall assure airborne separation between themselves and all other aircraft.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ASAS-Separation

Link Semantic Value
Term ASAS-Separation
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Mandatory for


Contexts

SESAR

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Airborne Separation Assistance System

separator

Broader term


Narrower term


Abbreviation

Definition

An ASAS application in which the role of separator is temporarily delegated to aircrew to assure airborne separation with regard to other aircraft under specific circumstances

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ASAS-Sequencing and Merging

Link Semantic Value
Term ASAS-Sequencing and Merging
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Airborne Separation Assistance System (ASAS)

Broader term


Narrower term


Abbreviation

Definition

An ASAS application that enables flight crew to maintain their position in a sequence previously determined by a controller or to merge their routes onto a single, predefined, route.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ASAS-Spacing

Link Semantic Value
Term ASAS-Spacing
Status


Mandatory for


Contexts

SESAR

Categories


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Airborne Separation Assistance System (ASAS)

Broader term


Narrower term


Abbreviation

ASPA

Definition

An ASAS spacing provision mode in which the separation responsibility remains with the Controller and the flight crew are instructed to maintain a specified time or distance from a designated aircraft, usually the preceding aircraft in the arrival or departure stream.

Definition Source

SESAR Concept of Operations Step 1 final edition 02.02.00 (2015)

Note

Lexicon Release

Lexicon Release 2016.1

ATFM slot swapping

Link Semantic Value
Term ATFM slot swapping
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

slot swapping

Related entries


Broader term


Narrower term


Abbreviation

Definition

An application that allows airlines to prioritise flights by exchanging the slot of one flight with the slot of another.

Initially limited to flights within the same airline, it now gives airspace users the opportunity to exchange the departure order of any two flights from different airlines penetrating the same constraint (airspace volume, arrival airport). This allows AUs, within commercial agreements, to reduce the delay of a commercially sensitive flight at the cost of another flight.

Definition Source

1st para: SESAR Joint Undertaking, User Driven Prioritisation Process, OSED, Project No. 07.06.04, Ed. 6

2nd para with detailed description: SESAR, Project: 7.6.4

Note

The possibility to extend it further to swapping between flights not sharing the same Most Penalising Regulation is under study. (source: SESAR, Project: 7.6.4)

Lexicon Release

Lexicon Release 2015.2

Advanced Continuous Descent Approach

Link Semantic Value
Term Advanced Continuous Descent Approach
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Mandatory for


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Categories


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continuous descent approach (CDA)

Broader term


Narrower term


Abbreviation

A-CDA

Definition

the progressive implementation of harmonised procedures for CDAs in higher density traffic.

Definition Source

EUROCONTROL, doc. OI AOM-0702

Note

Continuous descent approaches are optimised for each airport arrival procedure. New controller tools and 3D trajectory management enable aircraft to fly, as far as possible, their individual optimum descent profile.

Advanced Flexible Use of Airspace

Link Semantic Value
Term Advanced Flexible Use of Airspace
Status


Mandatory for


Contexts

SESAR

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Related entries

Flexible Use of Airspace

Broader term


Narrower term


Abbreviation

AFUA

Definition

An airspace management concept in which airspace is managed as a single entity and in which there are no fixed structures and airspace reservations for special airspace activity are allocated in real time.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

Advanced Surface Movement Guidance and Control System

Link Semantic Value
Term Advanced Surface Movement Guidance and Control System
Status


Mandatory for


Contexts

SESAR

Categories


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aerodrome visibility operational level (AVOL)

Broader term


Narrower term


Abbreviation

A-SMGCS

Definition

a system providing routing, guidance and surveillance for the control of aircraft and vehicles in order to maintain the declared surface movement rate under all weather conditions within the aerodrome visibility operational level (AVOL) while maintaining the required level of safety.

Definition Source

ICAO Doc 9830: Advanced Surface Movement Guidance and Control Systems (A-SMGCS) Manual

Note

Lexicon Release

Lexicon Release 2015.2

Adverse conditions

Link Semantic Value
Term adverse conditions
Status


Mandatory for


Contexts

SESAR

Categories


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CDM in adverse conditions

Broader term


Narrower term

adverse weather conditions

Abbreviation

Definition

Any event within the operational envelope of the airport, which has a significant negative impact on operational performance unless appropriate actions are organised.

Definition Source

SESAR Operational Service and Environment Definition (OSED) P.6.6.1, Ed.00.00.03, 20.01.2012

Note

This definition encompasses adverse weather conditions.


In most cases, the airport capacity will be affected. However, other Key Performance Areas may also be impacted (e.g. the predictability of operations may decrease). The consequence of adverse conditions at an airport may be arrival and departure delays and / or flight cancellations. In many cases, the ATM Network will also suffer from the disruption. (same source)

Lexicon Release

Lexicon Release 2015.2

Adverse weather conditions

Link Semantic Value
Term adverse weather conditions
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

degraded weather conditions

Related entries

disruptive weather condition

Broader term

adverse conditions

Narrower term


Abbreviation

Definition

Degraded weather condition: a condition which might have a significant negative impact on airport performance unless a proper response is organized (i.e. the selection of an airport operating mode to respond to given degraded conditions and eventually the use of additional airport resources such as de-icing/anti-icing services). This would be the case when visibility is poor and/or in case of freezing conditions, precipitations, etc.

Definition Source

ATM Airport Performance Framework (ATMAP) Measuring Airport Airside and Nearby Airspace Performance, December 2009

Note

Lexicon Release

Lexicon Release 2015.2

Aeronautical Information Service

Link Semantic Value
Term Aeronautical Information Service
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

AIS

Definition

A service established within the defined area of coverage responsible for the provision of aeronautical information/data necessary for the safety, regularity and efficiency of air navigation.

Definition Source

ICAO, Official definition, ANNEX 15 Aeronautical Information Services 2010

Note

The aeronautical information service provides aeronautical information e.g. for pre-flight planning processes e.g. NOTAMS, the Aeronautical Information Publications (e.g. Aerodrome Ground Movement Chart).

Lexicon Release

Lexicon Release 2015.2

Aeronautical data

Link Semantic Value
Term aeronautical data
Status


Mandatory for


Contexts

SESAR

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Related entries

Integrity of aeronautical data

Broader term


Narrower term


Abbreviation

Definition

A representation of aeronautical facts, concepts or instructions in a formalized manner suitable for communication, interpretation or processing.

Definition Source

ICAO (2010), Official definition, Annex 15 (Aeronautical Information Services)

Note

Lexicon Release

Lexicon Release 2015.2

Air Traffic Flow Management

Link Semantic Value
Term Air Traffic Flow Management
Status


Mandatory for

EUROCONTROL SESAR

Contexts

SESAR

Categories


Synonyms


Related entries

Air Traffic Flow and Capacity Management

Broader term


Narrower term


Abbreviation

ATFM

Definition

1) a function established with the objective of contributing to a safe, orderly and expeditious flow of air traffic by ensuring that ATC capacity is utilised to the maximum extent possible, and that the traffic volume is compatible with the capacities declared by the appropriate air traffic service providers

2) A service established with the objective of contributing to a safe, orderly and expeditious flow of air traffic by ensuring that ATC capacity is utilized to the maximum extent possible, and that the traffic volume is compatible with the capacities declared by the appropriate ATS authority.

Definition Source

1) EUROCONTROL (2007), "Principles for establishing the cost-base for en route charges and the calculation of the unit rates", Oct. 2007, p.30

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

Note

term replaced by Air Traffic Flow and Capacity Management

Lexicon Release

Lexicon Release 2015.2

Air Traffic Service Route Segment

Link Semantic Value
Term Air Traffic Service Route Segment
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

ATS Route Segment

Related entries

ATS route

Broader term


Narrower term


Abbreviation

Definition

A portion of an Air Traffic Service (ATS) route to be flown between two consecutive significant points.

Definition Source

1. Aeronautical Information Feature Data Dictionary (AIFDD)

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

Note

Lexicon Release

Lexicon Release 2015.1

Air traffic control

Link Semantic Value
Term air traffic control
Status


Mandatory for


Contexts

SESAR

Categories


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Related entries

air traffic

Broader term


Narrower term


Abbreviation

ATC

Definition

A service operated by appropriate authority to promote the safe, orderly and expeditious flow of air traffic.

Definition Source

FAA (2010) Pilot-Controller Glossary [1]

Note

Lexicon Release

Lexicon Release 2015.2

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


Synonyms


Related entries

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

Aircraft Intent

Link Semantic Value
Term Aircraft Intent
Status


Mandatory for


Contexts

SESAR

Categories


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Related entries

Flight Intent

Pilot Intent

Controller Intent

Ground Automation Intent

Broader term


Narrower term


Abbreviation

Definition

1.Behaviour by the aircraft that will have an impact on the aircraft trajectory.

2.Information on planned future aircraft behaviour, which can be obtained from the aircraft systems (avionics). It is associated with the commanded trajectory and will enhance airborne functions. The aircraft intent data correspond either to aircraft trajectory data that directly relate to the future aircraft trajectory as programmed inside the avionics, or the aircraft control parameters as managed by the automatic flight control system. These aircraft control parameters could either be entered by the flight crew or automatically derived by the Flight Management System.

Definition Source

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

2.ICAO (2008) doc. 9882, Manual on Air Traffic Management System Requirements

Note

Lexicon Release

Lexicon Release 2015.1

Airport Collaborative Decision Making

Link Semantic Value
Term Airport Collaborative Decision Making
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

Airport CDM

Related entries

Collaborative Decision Making (CDM)

CDM in adverse conditions

CDM turn-round process

Broader term


Narrower term


Abbreviation

A-CDM

Definition

1.A process in which decisions related to Air Traffic Flow and Capacity Management (hereinafter: ‘ATFCM’) at airports are made based on interaction between operational stakeholders and other actors involved in ATFCM and which aims at reducing delays, improving the predictability of events and optimising the utilisation of resources.

2.A concept which aims at improving Air Traffic Flow and Capacity Management (ATFCM) at airports by reducing delays, improving the predictability of events and optimising the utilisation of resources.

Definition Source

1.COMMISSION IMPLEMENTING REGULATION (EU) No 716/2014 of 27 June 2014 on the establishment of the Pilot Common Project supporting the implementation of the European Air Traffic Management Master Plan

2.EUROCONTROL (2010) Airport CDM Operational Concept Document, Ed. 3.1

Note

Implementation of Airport CDM allows each Airport CDM Partner to optimise their decisions in collaboration with other Airport CDM Partners, knowing their preferences and constraints and the actual and predicted situation. The decision making by the Airport CDM Partners is facilitated by the sharing of accurate and timely information and by adapted procedures, mechanisms and tools.

The Airport CDM concept is divided in the following Elements:

• Information Sharing

• Milestone Approach

Variable Taxi Time

• Predeparture Sequencing

• Adverse conditions

• Collaborative Management of Flight Updates

NM Glossary (2014):

Is about partners (airport operators, aircraft operators/ground handlers, ATC and Network Management) working together more efficiently and transparently in the way they work and share data. It aims to improve the overall efficiency of operations at an airport, with a particular focus on the aircraft turn-round and pre-departure sequencing process. One of the main outputs of the CDM process will be more accurate Target Take Off Times which can be used to improve en route and sector planning of the European ATM Network. This is being achieved through implementation of a full set of Departure Planning Information messages (DPIs) sent to Network Operations.

Lexicon Release

Lexicon Release 2015.1

Airport Operations Plan

Link Semantic Value
Term Airport Operations Plan
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


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Broader term


Narrower term


Abbreviation

AOP

Definition

A single, common and collaboratively agreed rolling plan available to all airport stakeholders whose purpose is to provide common situational awareness and to form the basis upon which stakeholder decisions relating to process optimisation can be made.

Definition Source

1. COMMISSION IMPLEMENTING REGULATION (EU) No 716/2014 of 27 June 2014 on the establishment of the Pilot Common Project supporting the implementation of the European Air Traffic Management Master Plan

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

Note

Lexicon Release

Lexicon Release 2015.1

Airspace management

Link Semantic Value
Term airspace management
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

ASM

Definition

1) The process by which airspace options are selected and applied to meet the needs of the ATM community.

2) A planning function with the primary objective of maximizing the utilization of available airspace by dynamic time-sharing and, at times, the segregation of airspace among various categories of users based on short-term needs.

Definition Source

1) ICAO, doc 9882 Manual on Air Traffic Management System Requirements 2008, 1st ed., p. F-1

2) ICAO (2002), "International Civil Aviation Vocabulary", Doc. 9713

and

Regulation (EC) No 549/2004 of the European Parliament and of the Council of 10 March 2004 laying down the framework for the creation of the single European sky (the framework Regulation)

Note

Lexicon Release

Lexicon Release 2015.2

Airspace restriction

Link Semantic Value
Term airspace restriction
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Airspace Reservation

Broader term


Narrower term

danger area

restricted area

prohibited area

Abbreviation

Definition

a defined volume of airspace within which, variously, activities dangerous to the flight of aircraft may be conducted at specified times (a ‘danger area’); or such airspace situated above the land areas or territorial waters of a State, within which the flight of aircraft is restricted in accordance with certain specified conditions (a ‘ restricted area ’); or airspace situated above the land areas or territorial waters of a State, within which the flight of aircraft is prohibited (a ‘ prohibited area ’).

Definition Source

EUROCONTROL (2010) Draft EUROCONTROL Specification for harmonized Rules for Operational Air Traffic (OAT) under Instrument Flight Rules (IFR) inside controlled Airspace of the ECAC Area (EUROAT), Ed. 1.2

COMMISSION REGULATION (EC) No 2150/2005, of 23 December 2005 laying down common rules for the flexible use of airspace

Note

In the context of SESAR, this term is often referred to as "airspace reservation/restriction" (ARES).

Arrival Manager

Link Semantic Value
Term Arrival Manager
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Departure Manager

En-Route Manager

Broader term


Narrower term


Abbreviation

AMAN

Definition

A planning system to improve arrival flows at one or more airports by calculating the optimised approach / landing sequence and Target Landing Times (TLDT) and, where needed, times for specific fixes for each flight, taking multiple constraints and preferences into account.

Definition Source

SESAR Concept of Operations Step 1 Edition 2013 (Ed. 01.02.00)

Note

Lexicon Release

Lexicon Release 2015.1

Closed Loop Clearance

Link Semantic Value
Term Closed Loop Clearance
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Open Loop Clearance

Reference Business Trajectory (RBT)

Broader term


Narrower term


Abbreviation

Definition

a clearance from a point on the current RBT/RMT, to another point of the current RBT/RMT. It may result in a revision of the RBT/RMT.

Definition Source

SESAR Concept of Operations Step 1, Edition 2015

Note

Lexicon Release

Lexicon Release 2015.1

Closed path CDO procedures

Link Semantic Value
Term Closed path CDO procedures
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

continuous descent operation (CDO)

Broader term


Narrower term


Abbreviation

Definition

Procedures coded with track to fix (TF) legs and fly-by waypoints. STARs that terminate with a link to an Instrument Approach Procedure should terminate at a fly-by waypoint. STARs that terminate with vector-based legs may be coded with fix to manual termination (FM) or heading to manual termination (VM) path terminators.

Definition Source

ICAO (2010) Doc 9931, Continuous Descent Operations (CDO) Manual

Note

Collaborative Decision Making

Link Semantic Value
Term Collaborative Decision Making
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Airport Collaborative Decision Making (A-CDM)

Broader term


Narrower term


Abbreviation

CDM

Definition

A process focused on how to decide on a course of action articulated between two or more community members.

Definition Source

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

Note

Through this process, ATM community members share information related to that decision and agree on and apply the decision-making approach and principles. The overall objective of the process is to improve the performance of the ATM system as a whole while balancing the needs of individual ATM community members.

Lexicon Release

Lexicon Release 2015.1

Combined Vision System

Link Semantic Value
Term Combined Vision System
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Enhanced Vision System (EVS)

Synthetic Vision System (SVS)

Broader term


Narrower term


Abbreviation

CVS

Definition

a combination of synthetic and enhanced vision systems.

Definition Source

EUROCAE ED-179B ( September 2011)

Note

Lexicon Release

Lexicon Release 2015.2

Complexity

Link Semantic Value
Term Complexity
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Density

Broader term


Narrower term


Abbreviation

Definition

The number of simultaneous or near- simultaneous interactions of trajectories in a given volume of airspace.

Definition Source

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

Note

Given complexity definition refers to ATM context.

For automation, complexity is relevant only in terms of calculation effort, not the ability to solve a given set of problems. Beyond a certain level of complexity, humans can no longer oversee all the consequences of the interactions and automation support is required if traffic is to be handled safely and efficiently. See also Density.

Lexicon Release

Lexicon Release 2015.1

Continuous descent operation

Link Semantic Value
Term continuous descent operation
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

continuous descent approach (CDA)

Broader term


Narrower term


Abbreviation

CDO

Definition

An operation, enabled by airspace design, procedure design and ATC facilitation, in which an arriving aircraft descends continuously, to the greatest possible extent, by employing minimum engine thrust, ideally in a low drag configuration, prior to the final approach fix /final approach point.

Definition Source

1. ICAO (2010) Doc 9931, Continuous Descent Operations (CDO) Manual

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

Note

1.— An optimum CDO starts from the top of descent and uses descent profiles that reduce , segments of level flight, noise, fuel burn, emissions and controller/pilot communications, while increasing predictability to pilots and controllers and flight stability.

2.— A CDO initiated from the highest possible level in the enroute or arrival phases of flight will achieve the maximum reduction in fuel burn, noise, and emissions.

Lexicon Release

Lexicon Release 2015.1

Controlled Time Over

Link Semantic Value
Term Controlled Time Over
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Controlled Time of Arrival

Broader term


Narrower term


Abbreviation

CTO

Definition

An ATM imposed time constraint over a point (way point or defined by lat/long coordinates) to be achieved within the required accuracy by the use of the avionics.

Definition Source

SESAR Concept of Operations Step 1 Edition 2015 (Ed. 02.02.00)

Note

Lexicon Release

Lexicon Release 2015.2

Controlled Time of Arrival

Link Semantic Value
Term Controlled Time of Arrival
Status

working definition (on-going discussion)

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Controlled Time Over

Required Time of Arrival

Broader term


Narrower term


Abbreviation

CTA

Definition

An ATM imposed time constraint on a defined metering point associated to an arrival runway, to be achieved within the required accuracy by the use of the avionics.

Definition Source

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

Note

Please note that the term Calculated Time of Arrival (CTA) is a different concept.

Lexicon Release

Lexicon Release 2015.1

Cooperative separation

Link Semantic Value
Term cooperative separation
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

spelling variant:

co-operative separation

Related entries

separator

Broader term


Narrower term


Abbreviation

Definition

airborne separation applications implying temporary delegation of the role of separator

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

Density

Link Semantic Value
Term density
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Complexity

Broader term


Narrower term


Abbreviation

Definition

In the ATM context, density refers to the number of simultaneous or near- simultaneous trajectories present in a given airspace volume.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

High densities require specific procedures to ensure that the required capacity to handle traffic can be provided. See also Complexity

Departure Manager

Link Semantic Value
Term Departure Manager
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Arrival Manager

En-Route Manager

Target Take-Off Time (TTOT)

Target Start Up Approval Time (TSAT)

Broader term


Narrower term


Abbreviation

DMAN

Definition

a planning system to improve departure flows at one or more airports by calculating the Target Take-Off Time (TTOT) and Target Start Up Approval Time (TSAT) for each flight, taking multiple constraints and preferences into account.

Definition Source

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

2.EUROCONTROL (2008) Airport CDM Implementation Manual [[2]]

Note

Lexicon Release

Lexicon Release 2015.1

Disruptive weather condition

Link Semantic Value
Term disruptive weather condition
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

adverse weather conditions

nominal weather condition

Broader term

adverse conditions

Narrower term


Abbreviation

Definition

a condition which is very unlikely to occur, it has a severe impact on airport performance, but the airport does not have an appropriate organized response (this might be the case of heavy snow in Rome). In addition, convective weather might create disruptive conditions, even if the airport is well prepared to respond to weather.

Definition Source

ATM Airport Performance Framework (ATMAP) Measuring Airport Airside and Nearby Airspace Performance, December 2009

Note

Lexicon Release

Lexicon Release 2015.2

Dynamic Mobile Area

Link Semantic Value
Term Dynamic Mobile Area
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

DMA

Definition

An integral part of the Mission Trajectory (MT) described by a 4D data set, where the velocity parameter is equal to zero. DMA constitutes a defined volume of airspace that satisfies specific requirements from different Airspace Users.

Definition Source

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

Note

There are two types of DMA that have been identified for Step 2: DMA Type 1 is a volume of airspace of defined dimensions described as integral part of MT at flexible geographical locations agreed upon a CDM process, satisfying Airspace Users requirements in terms of a time and/or distance constraint parameters from a reference point as specified by AU (e.g. Aerodrome of Departure). DMA Type2 is a volume of airspace of defined dimensions described as integral part of Mission Trajectory and agreed upon a CDM process, satisfying the Airspace Users requirements. This volume of airspace may be planned and used at any geographical location along the trajectory.

Lexicon Release

Lexicon Release 2015.1

ETA min/max

Link Semantic Value
Term ETA min/max
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Estimated Time of Arrival (ETA)

Controlled Time of Arrival (CTA)

ADS-C ETA min/max report

Broader term


Narrower term


Abbreviation

Definition

The earliest/latest ETA at a waypoint, provided the aircraft flies the 4D Trajectory at its max/min allowable speed, wind/temp error is also taken into account, in order to guarantee that any CTA defined within associated ETA min/max interval will be satisfied with high probability.

Definition Source

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

Note

Lexicon Release

Lexicon Release 2015.1


Enhanced Vision System

Link Semantic Value
Term Enhanced Vision System
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Synthetic Vision System (SVS)

Combined Vision System (CVS)

Broader term


Narrower term


Abbreviation

EVS

Definition

1. A system to display electronic real-time images of the external scene achieved through the use of image sensors.

2. an electronic means to provide the flight crew with a sensor-derived or enhanced image of the external scene through the use of imaging sensors such as forward looking infrared, millimeter wave radiometry, millimeter wave radar, and/or low light level image intensifying.

Definition Source

1. ICAO (2010) Official definition, Annex 6/I, II and III Operation of Aircraft

2. Eurocae WG79, 9.28/9.29 deliverables D2

Note

Lexicon Release

Lexicon Release 2015.2

Estimated Take-Off Time

Link Semantic Value
Term Estimated Take-Off Time
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Early-DPI

Estimated Off-Block Time (EOBT)

Estimated Taxi-Out Time (EXOT)

Target Take-Off Time (TTOT)

Calculated Take-Off Time (CTOT)

Actual Take-Off Time (ATOT)

Broader term


Narrower term


Abbreviation

ETOT

Definition

Forecast of time when aircraft will become airborne taking into account the EOBT plus EXOT

Definition Source

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

Note

Lexicon Release

Lexicon Release 2015.1

Flight Intent

Link Semantic Value
Term Flight Intent
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Aircraft Intent

Pilot Intent

Controller Intent

Ground Automation Intent

Broader term


Narrower term


Abbreviation

Definition

The future aircraft trajectory expressed as a 4-D profile until destination (taking account of aircraft performance, weather, terrain, and ATM service constraints), calculated and “owned” by the aircraft flight management system, and agreed by the pilot.

Definition Source

ICAO (2008) doc. 9882, Manual on Air Traffic Management System Requirements

Note

Lexicon Release

Lexicon Release 2015.2

Flight Object

Link Semantic Value
Term Flight Object
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

FO

Definition

The system instance view of a flight. It is the flight object that is shared between the IOP stakeholders.

Definition Source

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

2.EUROCAE (2009), FLIGHT OBJECT INTEROPERABILITY SPECIFICATION, ED-133

Note

IOP-Interoperability (between ground systems)

Lexicon Release

Lexicon Release 2015.1

Foreign Object Damage

Link Semantic Value
Term Foreign Object Damage
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Foreign Object Debris

Broader term


Narrower term


Abbreviation

FOD

Definition

any damage done to aircraft, helicopters, launch vehicles, engines or other aviation equipment by hard body (usually) Foreign Object Debris entering the engines, flight controls or other operating systems.

Definition Source

NATO, RTO-TR-AVT-094, Chapter 1 [3]

Note

Lexicon Release

Lexicon Release 2015.2

Foreign Object Debris

Link Semantic Value
Term Foreign Object Debris
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Foreign Object Damage

Broader term


Narrower term


Abbreviation

FOD

Definition

substances, debris or any articles that could potentially cause damage to a vehicle or engine. It is anything – large or small – inside or around aircraft and flight-line operations that does not belong there – which could create a hazard to equipment or personnel.

Definition Source

NATO, RTO-TR-AVT-094, Chapter 1 [4]

Note

Lexicon Release

Lexicon Release 2015.2

Ground Speed Profile

Link Semantic Value
Term Ground Speed Profile
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Reference Airspeed Profile

Time-Based Spacing (TBS)

Broader term


Narrower term


Abbreviation

Definition

The evolution of the ground speed values over a defined path segment.

(In the context of TBS over a defined path segment on the final approach glideslope)

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS)

Note

Lexicon Release

Lexicon Release 2015.2

Intermediate Approach

Link Semantic Value
Term Intermediate Approach
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

The downwind, base and intercept approach path segments for positioning and turning on to merge on to final approach ending at the interception of the final approach localiser and glideslope.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS)

Note

Land and Hold Short Operation

Link Semantic Value
Term Land and Hold Short Operation
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

LAHSO

Definition

Operations which include simultaneous takeoffs and landings and/or simultaneous landings when a landing aircraft is able and is instructed by the controller to hold-short of the intersecting runway/taxiway or designated hold-short point. Pilots are expected to promptly inform the controller if the hold short clearance cannot be accepted.

Definition Source

FAA (2011) Pilot/Controller Glossary, [5]

Note

These operations include landing and holding short of an intersecting runway, a taxiway, a predetermined point, or an approach/departure flightpath. (same source)

Landing Stabilisation Speed Profile

Link Semantic Value
Term Landing Stabilisation Speed Profile
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Runway Threshold

Broader term


Narrower term


Abbreviation

Definition

The evolution of the indicated airspeed on final approach path from the reference position from the runway landing threshold for commencing landing speed stabilisation and ending at the runway landing threshold.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS)

Note

Level off

Link Semantic Value
Term (to) level off
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

To maneuver an aircraft into a flight attitude that is parallel to the surface of the earth after gaining or losing altitude.

Definition Source

The free dictionary [6]

This definition is also supported by the SESAR working package 16 Definitions Team.

Note

Lexicon Release

Lexicon Release 2015.2

Managed Airspace

Link Semantic Value
Term Managed Airspace
Status


Mandatory for

EUROCONTROL

Contexts

SESAR

Categories


Synonyms


Related entries

Unmanaged Airspace

Free Flight Airspace

Broader term


Narrower term


Abbreviation

MAS

Definition

Airspace in which all traffic is known to the Air Traffic System

Definition Source

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

Note

Lexicon Release

Lexicon Release 2015.1

MergeStrip tool

Link Semantic Value
Term MergeStrip tool
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

continuous descent operation (CDO)

Point Merge

Broader term


Narrower term


Abbreviation

Definition

a tool designed to assist controllers in CDO sequencing and separation.

Definition Source

EUROCONTROL (2013) 3rd European CDO Workshop, Report and Actions

Note

The essence of the MergeStrip concept is that, in an extended environment, a dynamic system can be used to create relative spacing instead of a static map element with fixed lateral flight path.

...

MergeStrip components:

•Common route, for example final

•Merge points

•Relative Spacing Tool (here: plots on an imaginary centre line)

•High level concept of operation

•delaying manoeuvre if necessary (speed control or vectoring)

•using FMS capabilities, optimised flying towards one of the merge points

•speed control for maintaining relative spacing


Note Source

SESAR Joint Undertaking (2013) news [7]


Milestone

Link Semantic Value
Term milestone
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Target Time

Milestone Approach Concept Element

Broader term


Narrower term


Abbreviation

Definition

a significant event that occurs during the planning or operation of a flight.

Definition Source

EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010

Note

A successfully completed milestone will trigger the decision making process for downstream events and influence both the further progress of the flight and the accuracy with which the progress can be predicted.

Lexicon Release

Lexicon Release 2015.2

Milestone Approach Concept Element

Link Semantic Value
Term Milestone Approach Concept Element
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

milestone

Broader term


Narrower term


Abbreviation

Definition

[a description of] the progress of a flight from the initial planning to the take off by defining Milestones to enable close monitoring of significant events

Definition Source

EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010

Note

The aim is to achieve a common situational awareness and to predict the forthcoming events for each flight with off-blocks and take off as the most critical events.

Lexicon Release

Lexicon Release 2015.2

Military Mission Trajectory

Link Semantic Value
Term Military Mission Trajectory
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Airspace Reservation

Broader term

trajectory

Narrower term



Note

OBSOLETE TERM

Definition

...a 4D trajectory more complex than a civil business trajectory. (It) will usually consist of a transit to and from an airspace reservation with mission specific dimensions and characteristics

Definition Source

Abbreviation

Definition

...a 4D trajectory more complex than a civil business trajectory. (It) will usually consist of a transit to and from an airspace reservation with mission specific dimensions and characteristics

Definition Source

EUROCONTROL, 2008, SESAR Definition Phase The Concept of Operations at a glance, URL: http://www.eurocontrol.int/sesar]], EUROCONTROL, 2008, SESAR Definition Phase The Concept of Operations at a glance, URL: http://www.eurocontrol.int/sesar/gallery/content/public/docs/ConceptofOperations_02.pdf

Lexicon Release

Lexicon Release 2016.1

Military Variable Profile Area

Link Semantic Value
Term Military Variable Profile Area
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

MVPA

Definition

A flexible composition of defined modular portions of airspace to fulfil military needs, restricting airspace utilisation for other airspace users only by the necessary minimum.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

The dimensions of these military training areas (MTA) are published for identification and consideration. In general, a MTA consists of several sub-parts in form of defined airspace modules. Depending on individual military mission profiles the airspace dimension required for the specific operational training or exercises will be flexibly composed by combination of one or more allocated sub-parts to a suitable airspace block. The optimum airspace required can be simulated through respective tools.

Network Operations Plan

Link Semantic Value
Term Network Operations Plan
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

NOP

Definition

1.The plan, including its supporting tools, developed by the Network Manager in coordination with the operational stakeholders to organise its operational activities in the short and medium term in accordance with the guiding principles of the Network Strategic Plan. For the European route network design- specific part of the Network Operations Plan, it includes the European Route Network Improvement Plan.

2. A set of information and actions derived and reached collaboratively both relevant to, and serving as a reference for, the management of the Pan-European network in different timeframes for all ATM stakeholders, which includes, but is not limited to, targets, objectives, how to achieve them, anticipated impact.

Definition Source

1. COMMISSION IMPLEMENTING REGULATION (EU) No 716/2014 of 27 June 2014 on the establishment of the Pilot Common Project supporting the implementation of the European Air Traffic Management Master Plan.

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

Note

2. The NOP has a dynamic and rolling lifecycle starting in the planning phases and is progressively updated up to and including the execution and post-operations phases.

Lexicon Release

Lexicon Release 2015.1

Nominal weather condition

Link Semantic Value
Term nominal weather condition
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

disruptive weather condition

adverse weather conditions

Broader term


Narrower term


Abbreviation

Definition

a weather condition which is excellent or good to conduct airport operations: CAVOK, favourable winds, etc.

Definition Source

ATM Airport Performance Framework (ATMAP) Measuring Airport Airside and Nearby Airspace Performance, December 2009

Note

Lexicon Release

Lexicon Release 2015.2

Open Loop Clearance

Link Semantic Value
Term Open Loop Clearance
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Reference Business Trajectory

Closed Loop Clearance

Broader term


Narrower term


Abbreviation

Definition

an ATC clearance that does not include a specified or implied point where the restriction on the trajectory ends.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

Most tactical clearances take this form; they include heading (including track offset), level, and speed restrictions and exceptionally could also cover rates of climb or descent. Open-loop clearances are cancelled (closed) by a further instruction from the controller that defines how the flight should revert to the Reference Business Trajectory (RBT).

Operating environment

Link Semantic Value
Term operating environment
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

reference operating environment (ROE)

Sub-Operating Environment (Sub-OE)

Broader term


Narrower term


Abbreviation

OE

Definition

1. An environment with a consistent type of flight operations.

2. A general specification of the surroundings or scenario in which an operation may take place

Definition Source

1. SESAR, Work package C, management team

2. Nato Architecture Framework 3.0 and (EATMA) Guidance Material v7 (D138, Ed. 00.07.00, 2016)


Note

Basic OE are:1. Airport, TMA, En-route and Network

Lexicon Release

Lexicon Release 2015.2

Pair-wise separation

Link Semantic Value
Term pair-wise separation
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

PWS

Definition

1. Procedure designed for use between arrivals on final approach or between departures from the runway, based on an optimum adjusting of the needed separation between two aircraft taking into account their respective characteristics and giving Controllers more dynamic separation options.

2. A wake vortex separation based on individual aircraft type.

Definition Source

1. SESAR Concept of Operations Step 1 Edition 2013 (Ed. 01.02.00)

2. SESAR (2011) working package 6, Airport Definitions Team

Note

Lexicon Release

Lexicon Release 2015.1

Performance-based navigation

Link Semantic Value
Term performance-based navigation
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

area navigation (RNAV)

Broader term


Narrower term


Abbreviation

PBN

Definition

Area navigation based on performance requirements for aircraft operating along an ATS route, on an instrument approach procedure or in a designated airspace.

Definition Source

ICAO, Official term and definition added to AN 3 by Amdt 75 (2010), AN 4 by Amdt 55 (2009), AN 6/I by Amdt 32 (20/07/2008), An 6/II by Amdt 27 (20/07/2008), AN 6/III by Amdt 13 (20/07/2008), AN 10/I by Amdt 83 (20/07/2008), AN 11 by Amdt 46 (20/07/2008) and to AN 15 by Amdt 35 (2009)

Note

Performance requirements are expressed in navigation specifications (RNAV specification, RNP specification) in terms of accuracy, integrity, continuity, availability and functionality needed for the proposed operation in the context of a particular airspace concept. (Note source:ICAO)

Lexicon Release

Lexicon Release 2015.2

Queue management

Link Semantic Value
Term queue management
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

The tactical establishment and maintenance of a safe, orderly and efficient flow of traffic.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

It includes the handling of queues, both in the air and on the ground. It operates on individual flights and is closely related to, and sometimes indistinguishable from, the Separation Provision process.

It aims at facilitating the highest achievable capacity of the ATM System and to manage delays in a fuel-efficient and environmentally acceptable manner.

Lexicon Release

Lexicon Release 2015.2

Reference Airspeed Profile

Link Semantic Value
Term Reference Airspeed Profile
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Ground Speed Profile

Time-Based Separation (TBS)

indicated airspeed (IAS)

Broader term


Narrower term


Abbreviation

Definition

A specified evolution of the indicated airspeed over a defined path segment used as a reference speed behaviour profile.

(In the context of TBS the reference evolution of the IAS over a defined path segment on the final approach glideslope)

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Reference operating environment

Link Semantic Value
Term reference operating environment
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term

operating environment (OE)

Narrower term


Abbreviation

ROE

Definition

a real operating environment (OE) whose characteristics are used as a reference for Master Planning.

Definition Source

SESAR, Work package C, management team

Note

Its purpose is to have a realistic reference for planning.

Required Surveillance Performance

Link Semantic Value
Term Required Surveillance Performance
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

required navigation performance

Broader term


Narrower term


Abbreviation

RSP

Definition

the set of system performance parameters that are required for a surveillance system to support a surveillance application.

Definition Source

ICAO (2002), doc. SCRSP/WG-A, WP A/4-140, SURVEILLANCE AND CONFLICT RESOLUTION SYSTEMS PANEL, AIRBORNE SURVEILLANCE AND CONFLICT RESOLUTION SYSTEMS, WORKING GROUP A, 4th Meeting, Langen, November 2002, Agenda item 4 a. RSP for airborne surveillance, Framework for the development of RSP

Note

Lexicon Release

Lexicon Release 2015.2

Required navigation performance

Link Semantic Value
Term required navigation performance
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Required Surveillance Performance (RSP)

Broader term


Narrower term


Abbreviation

RNP

Definition

A statement of the navigation performance necessary for operation within a defined airspace.

Definition Source

ICAO, Official definition, AN 6/I Operation of Aircraft — International Commercial Air Transport — Aeroplanes 2010

Note

Navigation performance and requirements are defined for a particular RNP type and/or application.

Lexicon Release

Lexicon Release 2015.2

Runway occupancy time

Link Semantic Value
Term runway occupancy time
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term

arrival runway occupancy time (AROT)

departure runway occupancy time (DROT)

Abbreviation

ROT

Definition

the amount of time that each aircraft occupies the runway.

Definition Source

EUROCONTROL (2002) Guidelines on Runway Capacity Enhancement, Ed. 1.0

Note

Lexicon Release

Lexicon Release 2015.2

Scheduled In-Block Time

Link Semantic Value
Term Scheduled In-Block Time
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Scheduled Off-Block Time

Estimated In-Block Time (EIBT)

Broader term


Narrower term


Abbreviation

SIBT

Definition

The time that an aircraft is scheduled to arrive at its first parking position.

Definition Source

EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010

Note

Lexicon Release

Lexicon Release 2015.2

Scheduled Off-Block Time

Link Semantic Value
Term Scheduled Off-Block Time
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Actual Off-Block Time

Estimated Off-Block Time

Scheduled In-Block Time

Broader term


Narrower term


Abbreviation

SOBT

Definition

The time that an aircraft is scheduled to depart from its parking position.

Definition Source

EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010

Note

Lexicon Release

Lexicon Release 2015.2

Separation constraint

Link Semantic Value
Term separation constraint
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term

constraint

Narrower term


Abbreviation

Definition

The separation to keep aircraft operating safely on final approach.

Examples are minimum radar separation to keep risk of collision to an acceptable safe level and wake turbulence radar separation to keep the risk of an adverse wake turbulence encounter to an acceptable safe level.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Separator

Link Semantic Value
Term separator
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

The agent responsible for separation provision for a conflict, being either the airspace user or a separation provision service provider.

Definition Source

ICAO (2008), doc. 9882, Manual on Air Traffic Management System Requirements

Note

The role of the separator may be delegated; however, a pre-determined separator must be defined prior to the commencement of separation provision.

Lexicon Release

Lexicon Release 2015.2


Spacing constraint

Link Semantic Value
Term spacing constraint
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

separation constraint

Broader term

constraint

Narrower term


Abbreviation

Definition

The spacing required to be set on final approach for runway operations in the prevailing meteorological conditions.

Examples are VIS2 spacing, LVP spacing, runway surface inspection spacing and non-nominal runway occupancy spacing.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Spacing minimum pairs

Link Semantic Value
Term spacing minimum pairs
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

spacing constraint

Broader term


Narrower term


Abbreviation

Definition

Arrival pairs with no wake turbulence separation constraint which can be separated by the minimum separation or spacing constraint on final approach.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Spacing practice

Link Semantic Value
Term spacing practice
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

The practice of the final approach controller for managing the uncertainties in the changing distance spacing and time spacing between each arrival pair on the final approach glideslope such that the required separation constraints and spacing constraints are observed.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Standard Procedural Air Speed Profile

Link Semantic Value
Term Standard Procedural Air Speed Profile
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Reference Airspeed Profile

Time-Based Separation (TBS)

Broader term


Narrower term


Abbreviation

Definition

The Reference Airspeed Profile resulting from standard practice application of the controller speed control instructions.

(In the context of TBS the standard practice application of the controller speed control instruction on intermediate approach and final approach up to the start of landing speed stabilisation)

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

Lexicon Release

Lexicon Release 2015.2

Surface Manager

Link Semantic Value
Term Surface Manager
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

SMAN

Definition

An ATM tool that determines optimal surface movement plans (such as taxi route plans) involving the calculation and sequencing of movement events and optimising of resource usage (e.g. de-icing facilities).

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

ICAO terminology: surface management (SMAN)

SMAN is the Planning function in the Advanced Surface Movement Guidance and Control System.

Lexicon Release

Lexicon Release 2015.2

Synthetic Vision System

Link Semantic Value
Term Synthetic Vision System
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Enhanced Vision System (EVS)

Combined Vision System (CVS)

Broader term


Narrower term


Abbreviation

SVS

Definition

an electronic means to display a computer-generated image of the applicable external topography from the perspective of the flight deck that is derived from aircraft attitude, altitude, position, and a coordinate-referenced terrain database.

Definition Source

Eurocae WG79, 9.28/9.29 deliverables, D2

Note

Lexicon Release

Lexicon Release 2015.2

TBS rules

Link Semantic Value
Term TBS rules
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms

Time Based Separation rules

Related entries

Time-Based Separation (TBS)

Broader term


Narrower term


Abbreviation

Definition

The time based wake turbulence radar separation rules on final approach derived from the distance based wake turbulence separation rules.

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02 , 2013

Note

The TBS rules are based on a Ground Speed Profile conversion from applying the DBS rules in low headwind conditions. The ground speed profile conversion is based on a reference airspeed profile over the distance based separation to the runway landing threshold that the ICAO DBS rules are applied.

The reference airspeed profile is aligned to a 150kt IAS standard reference landing stabilisation speed profile to the runway landing threshold and is aligned to a 170kt IAS standard procedural airspeed profile to 6NM from the runway landing threshold prior to landing speed stabilisation.

Lexicon Release

Lexicon Release 2015.2

Target Time

Link Semantic Value
Term Target Time
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Target Off-Block Time (TOBT)

Target Start Up Approval Time (TSAT)

Target Take-Off Time (TTOT)

Target Landing Time (TLDT)

milestone

Broader term


Narrower term


Abbreviation

Definition

In A-CDM, a target time relates to the time of an airport milestone and serves as a "contract" between partners who are thus committed to achieving the milestone at this time. The time is derived only through a collaborative process and is used for milestone monitoring

Definition Source

SESAR, working package 6, Airport Definitions Team

Note

Lexicon Release

Lexicon Release 2015.2

Target Time of Arrival

Link Semantic Value
Term Target Time of Arrival
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SESAR

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Estimated Time of Arrival(ETA)

Controlled Time of Arrival (CTO)

Broader term


Narrower term


Abbreviation

TTA

Definition

An ATM computed arrival time. It is not a constraint but a progressively refined planning time that is used to coordinate between arrival and departure management applications.

Definition Source

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

Note

Lexicon Release

Lexicon Release 2015.1

Time-Based Separation

Link Semantic Value
Term Time-Based Separation
Status

approved

Mandatory for


Contexts

SESAR

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TBS rules

Broader term


Narrower term


Abbreviation

TBS

Definition

the separation of aircraft using time intervals instead of distances.

In SESAR step 1, it may be applied during final approach, where TBS rules allow the equivalent distance to be displayed to the controllers according to the prevailing wind conditions.

Definition Source

SESAR WP 6, Definitions Team

Note

related article on EUROCONTROL homepage [8]

Lexicon Release

Lexicon Release 2015.2

Touchdown

Link Semantic Value
Term touchdown
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actual landing time

Broader term


Narrower term


Abbreviation

Definition

The point where the nominal glide path intercepts the runway.

Definition Source

ICAO (2001) Official definition, doc. 4444 PANS-ATM: Procedures for Air Navigation Services — Air Traffic Management

Note

'Touchdown' as defined above is only a datum and is not necessarily the actual point at which the aircraft will touch the runway. (same source)

Trajectory

Link Semantic Value
Term trajectory
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SESAR

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Broader term


Narrower term


Abbreviation

Definition

The description of movement of an aircraft both in the air and on the ground including position, time, and at least via calculation, speed and acceleration.

Definition Source

1. ICAO (2003) AN-CONF/11-WP/4 The Global ATM Operational Concept

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

Note

Lexicon Release

Lexicon Release 2015.1

Trajectory Control by Ground Based Speed Adjustments

Link Semantic Value
Term Trajectory Control by Ground Based Speed Adjustments
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Mandatory for


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SESAR

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Broader term


Narrower term


Abbreviation

TC-SA

Definition

an automated de-confliction method that supports conventional surveillance based operations. In this mode, automation support tools impose speed adjustments (horizontal and/or vertical) within a limited range and constrained to the medium term time horizon in order to tactically de-conflict traffic and reduce complexity and controller task load.

Definition Source

EPISODE 3 glossary [9], referring to ERASMUS Concept of Operations, D2.2.1, v2.0, June 2007

Note

Lexicon Release

Lexicon Release 2015.2

Turnaround Integration in Trajectory And Network

Link Semantic Value
Term Turnaround Integration in Trajectory And Network
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Mandatory for


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SESAR

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Broader term


Narrower term


Abbreviation

TITAN

Definition

a project in the EU’s Seventh Framework Programme, [...] aimed at analyzing the aircraft turnaround process with a view to identifying opportunities for improvements as well as to identify the potential influence of traditionally external processes like passenger flow and baggage handling.

Definition Source

EUROPEAN UNION(2010) TITAN Operational Concept – Issue 1 [10]

Note

Lexicon Release

Lexicon Release 2015.2

Unmanaged Airspace

Link Semantic Value
Term Unmanaged Airspace
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SESAR

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Managed Airspace

Free Flight Airspace

Broader term


Narrower term


Abbreviation

UMAS

Definition

Airspace other than managed airspace.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

User Driven Prioritisation Process

Link Semantic Value
Term User Driven Prioritisation Process
Status


Mandatory for


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SESAR

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Collaborative Decision Making (CDM)

Broader term


Narrower term


Abbreviation

UDPP

Definition

A CDM-based process which permits Airspace Users to reflect a prioritisation of flights which best respects the business interests of AU stakeholders.

Definition Source

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

Note

It is primarily for use during periods of capacity constraint, but available at all times in order to support business efficiency.UDPP is available at both planning and execution phases and is enabled by the Network Management Function.

Lexicon Release

Lexicon Release 2015.1

What-if Flight Object

Link Semantic Value
Term What-if Flight Object
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SESAR

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Flight Object (FO)

Broader term


Narrower term


Abbreviation

WIFO

Definition

a copy of the real Flight Object, used to negotiate potential changes to the flight data without affecting the corresponding data for the actual flight.

Definition Source

EUROCAE (2009), FLIGHT OBJECT INTEROPERABILITY SPECIFICATION, ED-133

Note

Lexicon Release

Lexicon Release 2015.2

Wind Conditions Profile

Link Semantic Value
Term Wind Conditions Profile
Status


Mandatory for


Contexts

SESAR

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Time-Based Separation (TBS)

Broader term


Narrower term


Abbreviation

Definition

The evolution of the wind speed and wind direction over a defined path segment.

(In the context of TBS over defined path segments of the final approach glideslope)

Definition Source

SESAR doc. 06.08.01 Operational Concept Description (OCD) and Operational Service and Environment Definition (OSED) for Time Based Separation for Arrivals (TBS), Ed 00.01.02, 2013

Note

Lexicon Release

Lexicon Release 2015.2