FullDescription:Airspace and/or Routes

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ATS route

Link Semantic Value
Term ATS route
Status


Mandatory for


Contexts


Categories


Synonyms

air traffic service route

Related entries


Broader term


Narrower term


Abbreviation

Definition

A specified route designed for channelling the flow of traffic as necessary for the provision of air traffic services.

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

ANNEX 4 Aeronautical Charts 2001, 10th ed. (Amdt 53, 12/07/2004)

Note

Note 1.— The term 'ATS route' is used to mean variously, airway, advisory route, controlled or uncontrolled route, arrival or departure route, etc.

Note 2.— An ATS route is defined by route specifications which include an ATS route designator, the track to or from significant points (waypoints), distance between significant points, reporting requirements and, as determined by the appropriate ATS authority, the lowest safe altitude. (note source: ICAO)

Active waypoint

Link Semantic Value
Term active waypoint
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

way-point (waypoint)

Narrower term


Abbreviation

Definition

A way-point [sic] to or from which navigational guidance is being provided. For a parallel offset, the active way-point may or may not be at the same geographical position as the parent way-point. When not in the parallel offset mode (operating on the parent route), the active and parent way-points are at the same geographical position.

Definition Source

ICAO - GNSSP/2-WP/87 (Version 4.0) - p.1A-42

Note

Advisory airspace

Link Semantic Value
Term advisory airspace
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Abbreviation

Definition

An airspace of defined dimensions, or designated route, within which air traffic advisory service is available.

Definition Source

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

Note

Advisory route

Link Semantic Value
Term advisory route
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Abbreviation

ADR

Definition

A designated route along which air traffic advisory service is available.

Definition Source

ICAO (2005) Official definition, ANNEX 2 Rules of the Air 2005, 10th ed.

Note

Air traffic control service provides a much more complete service than air traffic advisory service; advisory areas and routes are therefore not established within controlled airspace, but air traffic advisory service may be provided below and above control areas.

Aerial Refuel Base Level

Link Semantic Value
Term Aerial Refuel Base Level
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Definition

The lowest altitude or flight level at which Refuel Operations can be performed.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Aerial Refuel Bidirectional Use

Link Semantic Value
Term Aerial Refuel Bidirectional Use
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Definition

An indication that the aerial Refuel track supports simultaneous opposite direction aerial Refuel.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Aerial Refuel Helicopter Only

Link Semantic Value
Term Aerial Refuel Helicopter Only
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Definition

An indication that the aerial Refuel procedure is designed only for helicopter usage.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Aerial Refuel Receiver Channel

Link Semantic Value
Term Aerial Refuel Receiver Channel
Status


Mandatory for


Contexts


Categories


Synonyms


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Broader term


Narrower term


Definition

The Tactical Air Navigation System (TACAN) channel assigned to the aircraft receiving fuel during air Refuel operations.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

The receiver and tanker TACAN equipment are tuned 63 channels apart in order to provide DME information from the tanker to the receiver aircraft.

Aerial Refuel Tanker Channel

Link Semantic Value
Term Aerial Refuel Tanker Channel
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The Tactical Air Navigation System (TACAN) channel assigned to the aircraft supplying fuel during air Refuel operations.

Definition Source

  • AIFDD

Note

The receiver and tanker TACAN equipment are tuned 63 channels apart in order to provide DME information from the tanker to the receiver aircraft.

Air Refuel Point Usage

Link Semantic Value
Term Air Refuel Point Usage
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The function(s) of the air Refuel point in relation to the air Refuel anchor pattern or air Refuel track.

Definition Source

  • AIFDD

Note

There is no known note.

Air Refuel Procedure Designator

Link Semantic Value
Term Air Refuel Procedure Designator
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The name or coded identifier by which an air Refuel procedure may be recognized.

Definition Source

  • AIFDD

Note

For example: a name such as 'GRETCHEN' or a coded identifier such as 'ARA10'.

Air Refuel Procedure Direction

Link Semantic Value
Term Air Refuel Procedure Direction
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The general cardinal direction of the air Refuel procedure, as a category.

Definition Source

  • AIFDD

Note

There is no known note.

Air Refuel Procedure Type

Link Semantic Value
Term Air Refuel Procedure Type
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The type of the air Refuel procedure based on its configuration.

Definition Source

  • AIFDD

Note

There is no known note.

Air Refuelling Anchor Pattern

Link Semantic Value
Term Air Refuelling Anchor Pattern
Status


Mandatory for


Contexts


Categories


Synonyms

Air Refuelling Anchor

Related entries


Broader term


Narrower term


Definition

A prescribed pattern, established by air refuelling points, along which air-to-air refuelling of aircraft is performed.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Air refuelling anchor patterns are usually shaped like an oval racetrack.

Air Refuelling Point

Link Semantic Value
Term Air Refuelling Point
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

Air Refuelling Track

Air Refuelling Anchor Pattern

Broader term


Narrower term


Definition

A geographic position or radio navigation fix along an air refuelling anchor pattern or air refuelling track.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Usages include, for example, entry/exit, rendezvous and navigation checkpoint.

Air Refuelling Procedure

Link Semantic Value
Term Air Refuelling Procedure
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

A procedure used by the military to transfer fuel from one aircraft to another during flight.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Air Refuelling Track

Link Semantic Value
Term Air Refuelling Track
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

Air Refuelling Point

Broader term


Narrower term


Definition

A prescribed route, established by air refuelling points, geographic points and/or radio navigation fixes, along which air-to-air refuelling of aircraft is performed.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Air Traffic Control Required Report Type

Link Semantic Value
Term Air Traffic Control Required Report Type
Status


Mandatory for


Contexts


Categories


Synonyms

ATC Required Report Type

Related entries


Broader term


Narrower term


Definition

The type of position report required to an Air Traffic Control (ATC) Unit.

Definition Source

  • AIFDD

Note

There is no known note.

Air Traffic Permitted Type

Link Semantic Value
Term Air Traffic Permitted Type
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The type of air traffic allowed to conduct operations in a given area.

Definition Source

  • AIFDD

Note

For example: civil and/or military traffic.

Air Traffic Service

Link Semantic Value
Term Air Traffic Service
Status


Mandatory for


Contexts


Categories

,

Synonyms


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Broader term


Narrower term


Abbreviation

  • ATS

Definition

1. The availability of one or more flight information services, alerting services, air traffic advisory services, and/or air traffic control services (for example: area control services, approach control services, and aerodrome control services).

2. A generic term meaning variously flight information service, alerting service, air traffic advisory service, air traffic control service (area control service, approach control service or aerodrome control service) and aerodrome flight information service.

Definition Source

1. Aeronautical Information Feature Data Dictionary (AIFDD)

2. ICAO, ANNEX 11 Air Traffic Services 2001, 13th ed.; ANNEX 2 Rules of the Air 2005, 10th ed.

Note

Air Traffic Service Route Designator

Link Semantic Value
Term Air Traffic Service Route Designator
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Designator

Related entries


Broader term


Narrower term


Definition

A designator permitting the identification of any Air Traffic Service (ATS) route.

Definition Source

  • AIFDD

Note

The route designator shall be specified in accordance with ICAO Annex 11.

Air Traffic Service Route Location Designator

Link Semantic Value
Term Air Traffic Service Route Location Designator
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Location Designator

Related entries


Broader term


Narrower term


Definition

A structured textual description of the country of origin and destination of the Air Traffic Service (ATS) route.

Definition Source

  • AIFDD

Note

There is no known note.

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 Service Route Segment Availability

Link Semantic Value
Term Air Traffic Service Route Segment Availability
Status


Mandatory for


Contexts


Categories


Synonyms

Route Availability, ATS Route Segment Availability

Related entries


Broader term


Narrower term


Definition

The condition in which a Air Traffic Service (ATS) route segment may be flown.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Factors include conditions such as traffic flow and time constraints. For example: CDR1 or SPECIAL.

Air Traffic Service Route Segment Length

Link Semantic Value
Term Air Traffic Service Route Segment Length
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Segment Length

Related entries


Broader term


Narrower term


Definition

The distance between the two ends of the Air Traffic Service (ATS) route segment, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

Measured in Nautical Miles or Kilometres

Air Traffic Service Route Segment Path Basis

Link Semantic Value
Term Air Traffic Service Route Segment Path Basis
Status


Mandatory for


Contexts


Categories


Synonyms

Segment Path Type, ATS Route Segment Path Basis

Related entries


Broader term


Narrower term


Definition

The geodetic basis for the path between the two ends of the Air Traffic Service (ATS) route segment, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

For example: great circle, rhumbline, or geodesic line.

Air Traffic Service Route Segment Usage Direction

Link Semantic Value
Term Air Traffic Service Route Segment Usage Direction
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Segment Usage Direction

Related entries


Broader term


Narrower term


Definition

The direction of the usage condition of the Air Traffic Service (ATS) route segment in relation to the start point and end point.

Definition Source

  • AIFDD

Note

For example: forward, backward or both

Air Traffic Service Route Segment Width

Link Semantic Value
Term Air Traffic Service Route Segment Width
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Segment Width

Related entries


Broader term


Narrower term


Definition

The declared dimension of an Air Traffic Service (ATS) route segment taken perpendicular to its path, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

There is no known note.

Air Traffic Service Route Type

Link Semantic Value
Term Air Traffic Service Route Type
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route Type

Related entries


Broader term


Narrower term


Definition

A classification of the Air Traffic Service (ATS) route segment describing the characteristics and requirements for its usage.

Definition Source

  • AIFDD

Note

For example: conventional or RNAV.

Air traffic control sector

Link Semantic Value
Term air traffic control sector
Status


Mandatory for


Contexts


Categories


Synonyms

ATC sector

Related entries


Broader term

air traffic control (ATC)

airspace

Narrower term


Abbreviation

Definition

A defined airspace region for which an associated controller (or controllers) has ATC responsibility.

Definition Source

EUROCONTROL, EATM glossary 2004

Note

Air traffic service airspace

Link Semantic Value
Term air traffic service airspace
Status


Mandatory for


Contexts


Categories


Synonyms

ATS airspace

Related entries


Broader term

Air Traffic Service (ATS)

Narrower term


Abbreviation

Definition

Airspace of defined dimensions, alphabetically designated, within which specific types of flights may operate and for which Air Traffic Services and rules of operations are specified.

Definition Source

EUROCONTROL (2004) EATM glossary, June 2004

Note

ATS airspaces are classified as Class A to G.

Airborne Identification Radar Beacon Code

Link Semantic Value
Term Airborne Identification Radar Beacon Code
Status


Mandatory for


Contexts


Categories


Synonyms

APX Code

Related entries


Broader term


Narrower term


Abbreviation

  • APX

Definition

The setting to be used by the Airborne Identification Radar beacon during aerial Refuel operations.

Definition Source

  • AIFDD

Note

There is no known note.

Airborne Navigation Radar Beacon Code

Link Semantic Value
Term Airborne Navigation Radar Beacon Code
Status


Mandatory for


Contexts


Categories


Synonyms

APN Code

Related entries


Broader term


Narrower term


Abbreviation

  • APN

Definition

The setting to be used by the Airborne Navigation Radar beacon during aerial Refuel operations.

Definition Source

  • AIFDD

Note

Airspace

Link Semantic Value
Term Airspace
Status


Mandatory for


Contexts

SESAR

EAEA

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

A defined three dimensional region of space relevant to air traffic.

Definition Source

Aeronautical Information Exchange Model (AIXM), version 5.1

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Lexicon Release

Lexicon Release 2015.2

Airspace Activity

Link Semantic Value
Term Airspace Activity
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The primary situation(s) or reason(s) on the ground or in the air, which may have an impact on air traffic.

Definition Source

  • AIFDD

Note

For example: a missile firing range or air Refuel.

Airspace Class

Link Semantic Value
Term Airspace Class
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

A categorization of airspace which determines the operating rules, flight requirements, and services provided.

Definition Source

  • AIFDD

Note

There is no known note.

Airspace Control

Link Semantic Value
Term Airspace Control
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The primary organization type providing air traffic services within a designated airspace.

Definition Source

  • AIFDD

Note

For example: civil and/or military organizations.

Airspace Identifier

Link Semantic Value
Term Airspace Identifier
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

A published sequence of characters allowing the unique identification of the airspace.

Definition Source

  • AIFDD

Note

For example, the identifier of the Danger Area, Prohibited Area, or Temporary Segregated Area.

Airspace Name

Link Semantic Value
Term Airspace Name
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The name given to an airspace by a responsible authority.

Definition Source

  • AIFDD

Note

It should be written as published, with no significance to upper or lower case letters.

Airspace Type

Link Semantic Value
Term Airspace Type
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The general structure or characteristics of a particular airspace, as a category.

Definition Source

  • AIFDD

Note

There is no known note.

Alert area

Link Semantic Value
Term alert area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

Special Use Airspace

Narrower term


Abbreviation

Definition

"Type of special use airspace [...] which may contain a high volume of pilot training activities or an unusual type of aerial activity, neither of which is hazardous to aircraft."

Definition Source

FAA, Pilot/Controller Glossary, [1]2010

Note

Allowed Aircraft on Route

Link Semantic Value
Term Allowed Aircraft on Route
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The general categorization of aircraft that may use the route segment.

Definition Source

  • AIFDD

Note

For example: jet, helicopter, or propeller.

Altitude

Link Semantic Value
Term altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

ALT

Definition

The vertical distance of a level, a point or an object considered as a point, measured from mean sea level (MSL)

Definition Source

ICAO, Official definition added to An 10/I by Amdt 71 (07/11/1996)

Note

Altitude Description

Link Semantic Value
Term Altitude Description
Status


Mandatory for


Contexts


Categories

,

Synonyms

Speed Interpretation

Related entries


Broader term


Narrower term


Definition

The applicable interpretation of the stated altitude.

Definition Source

  • AIFDD

Note

There is no known note.

Area navigation route

Link Semantic Value
Term area navigation route
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

required navigation performance

ATS route

Broader term

area navigation

Narrower term


Abbreviation

Definition

An ATS route established for the use of aircraft capable of employing area navigation.

Definition Source

ICAO, Official definition, DOC 9613 Manual on Required Navigation Performance (RNP) 2008, 3rd ed., p. I-(xix)

Note

Area of Responsibility

Link Semantic Value
Term Area of Responsibility
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

area of interest

Broader term


Narrower term


Abbreviation

AoR

Definition

An airspace of defined dimensions within which an ATC unit provides air traffic services.

Definition Source

EUROCONTROL Specification for On-Line Data Interchange (OLDI) Edition 4.1 (2008)

Note

Area of common interest (SYSCO)

Link Semantic Value
Term area of common interest (SYSCO)
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

area of interest

Area of Responsibility

Broader term


Narrower term


Abbreviation

Definition

A volume of airspace as agreed between 2 ATS Units, extending into the adjacent/subjacent Areas of Responsibility, within which airspace structure and related activities may have an impact on air traffic co-ordination procedures.

Definition Source

EUROCONTROL, FASTI Operational Focus Group, First ATC Support Tools Implementation (FASTI) Operational Concept, Ed. 1.1, Edition Date : 20 March 2007

Note

The term SYSCO is used as a generic term to indicate the electronic system supported co-ordination process. (same source)

Area of interest

Link Semantic Value
Term area of interest
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

area of common interest (SYSCO)

Broader term


Narrower term


Abbreviation

Definition

The airspace encompassing the AoR and a defined buffer zone within which airspace status and flight information are of operational interest to the system operators.

Definition Source

EUROCONTROL, FASTI Operational Focus Group, First ATC Support Tools Implementation (FASTI) Operational Concept, Ed. 1.1, Edition Date : 20 March 2007

Note

AoR - Area of Responsibility

Bearing

Link Semantic Value
Term '
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term

Magnetic Bearing

True Bearing

Abbreviation

BRG

Definition

The horizontal direction of an object or point usually measured clockwise from a reference line or direction through 360 [degrees]. Magnetic North is the reference line generally used.

Definition Source

ICAO, DOC 8071 Manual on Testing of Radio Navigation Aids 1972, 3rd ed., p. 15

Note

Change-over Point Distance

Link Semantic Value
Term Change-over Point Distance
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

change-over point

Narrower term


Definition

The DME distance from the previous VORDME, VORTAC or TACAN to the point at which an aircraft navigating on an Air Traffic Service (ATS) route segment is expected to transfer its primary navigational reference to the next facility ahead of the aircraft.

Definition Source

  • Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Change-over points are established to provide the optimum balance in respect of signal strength and quality between facilities at all levels to be used and to ensure a common source of azimuth guidance for all aircraft operating along the same portion of an Air Traffic Service (ATS) route segment.

Communication Failure Procedure

Link Semantic Value
Term Communication Failure Procedure
Status


Mandatory for


Contexts


Categories

,

Synonyms

Communication Failure Description

Related entries


Broader term


Narrower term


Definition

A textual specification of guidance to be followed in case of radio communication failure.

Definition Source

  • AIFDD

Note

There is no known note.

Conditional Route

Link Semantic Value
Term Conditional Route
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

Conditional Route Availability Message (CRAM)

Broader term


Narrower term


Abbreviation

CDR

Definition

an ATS route that is only available for flight planning and use under specified conditions.

A Conditional Route may have more than one category, and those categories may change at specified times:

a) Category One - Permanently Plannable CDR:

CDR1 routes are available for flight planning during times published in the relevant national Aeronautical Information Publication (AIP).

b) Category Two - Non-Permanently Plannable CDR:

CDR2 routes may be available for flight planning. Flights may only be planned on a CDR2 in accordance with conditions published daily in the CRAM, and

c) Category Three - Not Plannable CDR:

CDR3 routes are not available for flight planning; however, ATC Units may issue tactical clearances on such route segments.

Definition Source

EUROCONTROL (2010) Guidelines: The ASM Handbook, Airspace Management Handbook for Application of the Concept of the Flexible Use of Airspace, Ed. 3.0, Reference nr: EUROCONTROL-GUID-140

Note

Course Type

Link Semantic Value
Term Course Type
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

A descriptor of the aircraft course to be flown.

Definition Source

  • AIFDD

Note

For example: True Track, Magnetic Track, heading, VOR radial, True Bearing, or Magnetic Bearing.

Cross-Border Area

Link Semantic Value
Term Cross-Border Area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term

Temporary Reserved Area (TRA)

Temporary Segregated Area (TSA)

Abbreviation

CBA

Definition

an airspace restriction or reservation established over international borders for specific operational requirements. This may take the form of a Temporary Segregated Area (TSA) or Temporary Reserved Area (TRA).

Definition Source

EUROCONTROL (2010) EUROCONTROL Guidelines, The ASM Handbook, Airspace Management Handbook for Application of the Concept of the Flexible Use of Airspace, Ed. 3.0

Note

Cross-border airspace

Link Semantic Value
Term cross-border airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

an airspace structure extending across national borders and/or the boundaries of flight information regions.

Definition Source

COMMISSION REGULATION (EC) No 2150/2005 of 23 December 2005, laying down common rules for the flexible use of airspace [2]

Note

Direct Routing

Link Semantic Value
Term Direct Routing
Status

agreed

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Great Circle

Broader term


Narrower term


Abbreviation

Definition

A published segment of a Great Circle between 2 published waypoints.

Definition Source

SESAR JU (2014), « Free Route Task Force », Edition 00.01.00 (21.03.2014).

Note

Lexicon Release

Lexicon Release 2015.1

Direct Routing Airspace

Link Semantic Value
Term Direct Routing Airspace
Status

agreed

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Direct Routing

Broader term


Narrower term


Abbreviation

Definition

Airspace defined laterally and vertically with a set of entry/exit conditions where published direct routings are available. Within this airspace, flights remain subject to air traffic control.

Definition Source

SESAR JU (2014), « Free Route Task Force », Edition 00.01.00 (21.03.2014)

Note

Lexicon Release

Lexicon Release 2015.1


En-route airspace

Link Semantic Value
Term en-route airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

airspace

Narrower term


Abbreviation

Definition

"the volume of airspace outside terminal areas, where the climb, cruise and descent phases of flight take place and within which various types of air traffic services are provided."

Definition Source

EUROCONTROL, SASS-C Glossary

Note

Enroute ATS Route

Link Semantic Value
Term Enroute ATS Route
Status


Mandatory for


Contexts


Categories


Synonyms

En-route Route

Related entries


Broader term


Narrower term


Definition

A specified route designed for channeling the flow of traffic as necessary for the provision of air traffic service (ATS) from the end of the take-off and initial climb phase to the commencement of the approach and landing phase.

Definition Source

  • AIFDD

Note

There is no known note.

Final Approach Fix

Link Semantic Value
Term Final Approach Fix
Status


Mandatory for


Contexts


Categories


Synonyms

final approach point

Related entries

Initial Approach Fix

Intermediate Fix

Broader term


Narrower term


Abbreviation

FAF

Definition

That fix (...) of an instrument approach procedure where the final approach segment commences.

Definition Source

ICAO, Official definition, AN 4 Aeronautical Charts 2001, 10th ed. (Amdt 53, 12/07/2004)

Note

Flexible Use of Airspace

Link Semantic Value
Term Flexible Use of Airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

FUA

Definition

1. an ASM concept currently applied in the ECAC area and based on the fundamental principle that airspace should no longer be designated as either pure civil or military airspace, but rather be considered as one continuum in which all airspace user requirements have to be accommodated

2. an airspace management concept applied in the European Civil Aviation Conference area on the basis of the “Airspace management handbook for the application of the concept of the flexible use of airspace” issued by Eurocontrol

Definition Source

1. "EUROCONTROL AIRSPACE STRATEGY FOR THE ECAC STATES", Doc. ASM.ET1.ST03.4000.EAS-01-00

2. REGULATION (EC) No 1070/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 October 2009 amending Regulations (EC) No 549/2004, (EC) No 550/2004, (EC) No 551/2004 and (EC) No 552/2004 in order to improve the performance and sustainability of the European aviation system

Note

Flight Rule Type

Link Semantic Value
Term Flight Rule Type
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The type of standard flight rules to be observed by aircraft.

Definition Source

  • AIFDD

Note

For example: VFR or IFR.

Free Routing

Link Semantic Value
Term Free Routing
Status

agreed

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

FRA

Definition

The ability of an Airspace User to plan/re-plan a route according to the User defined segments.

Definition Source

SESAR JU (2014), « Free Route Task Force », Edition 00.01.00 (21.03.2014)

Note

Lexicon Release

Lexicon Release 2015.1

Free Routing Airspace

Link Semantic Value
Term Free Routing Airspace
Status

agreed

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Free Routing

Broader term


Narrower term


Abbreviation

FRA

Definition

Airspace defined laterally and vertically, allowing Free Routing with a set of entry/exit features. Within this airspace, flights remain subject to air traffic control.

Definition Source

SESAR JU (2014), « Free Route Task Force », Edition 00.01.00 (21.03.2014).

Note

Lexicon Release

Lexicon Release 2015.1

ICAO Location Indicator

Link Semantic Value
Term ICAO Location Indicator
Status


Mandatory for


Contexts


Categories

,

Synonyms

ICAO Location Identifier

Related entries


Broader term


Narrower term


Definition

The identifier that is assigned to a location in accordance with rules prescribed by the International Civil Aviation Organization (ICAO) in Document 7910.

Definition Source

  • AIFDD

Note

If available this indicator shall be used as primary for identification.

Initial Approach Fix

Link Semantic Value
Term Initial Approach Fix
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

fly-by waypoint

Final Approach Fix

Intermediate Fix

Broader term


Narrower term


Abbreviation

IAF

Definition

A fix that marks the beginning of the initial segment and the end of the arrival segment, if applicable.

Definition Source

ICAO, Official definition added to PANS-OPS/I by Amdt 13 (25/11/2004) and PANS-OPS/II by Amdt 12 (25/11/2004)

Note

In RNAV applications this fix is normally defined by a fly-by waypoint.

Intermediate Fix

Link Semantic Value
Term Intermediate Fix
Status


Mandatory for


Contexts


Categories


Synonyms

intermediate approach fix

Related entries

Initial Approach Fix

Final Approach Fix

fly-by waypoint

Broader term


Narrower term


Abbreviation

IF

Definition

A fix that marks the end of an initial segment and the beginning of the intermediate segment.

Definition Source

ICAO, Official definition added to PANS-OPS/I by Amdt 13 (25/11/2004)

Note

In RNAV applications this fix is normally defined by a fly-by waypoint.

International Air Traffic Service Route

Link Semantic Value
Term International Air Traffic Service Route
Status


Mandatory for


Contexts


Categories


Synonyms

ATS Route

Related entries


Broader term


Narrower term


Definition

An indication that the route is part of the regional network of Air Traffic Service (ATS) routes, as defined by the ICAO regional Air Navigation Plan (ANP).

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

ICAO's official definition for "ATS route":

A specified route designed for channelling the flow of traffic as necessary for the provision of air traffic services.

Note 1.— The term 'ATS route' is used to mean variously, airway, advisory route, controlled or uncontrolled route, arrival or departure route, etc.

Note 2.— An ATS route is defined by route specifications which include an ATS route designator, the track to or from significant points (waypoints), distance between significant points, reporting requirements and, as determined by the appropriate ATS authority, the lowest safe altitude

(source: ICAO ANNEX 2 Rules of the Air 2005)

Local Airspace Type

Link Semantic Value
Term Local Airspace Type
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

A locally specified designation denoting a particular airspace category as defined by a local authority.

Definition Source

  • AIFDD

Note

There is no known note.

Magnetic Bearing

Link Semantic Value
Term Magnetic Bearing
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The horizontal direction (bearing) of an object or point measured clockwise from Magnetic North up to, but not including, 360 arc degrees.

Definition Source

  • AIFDD

Note

There is no known note.

Magnetic Track

Link Semantic Value
Term Magnetic Track
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The projection on the Earth's surface of the path of an aircraft, the direction of which path at any point is expressed in arc degrees from Magnetic North, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

There is no known note.

Major terminal area

Link Semantic Value
Term major terminal area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

the volume of airspace surrounding one or more principal aerodromes. The lateral extent will vary, depending on the disposition of aerodromes within, or adjacent to the terminal area. The vertical dimensions will vary with the way the airspace and the procedures for handling the air traffic flow are organised.

Definition Source

EUROCONTROL SASS-C Glossary

Note

Maximum Altitude

Link Semantic Value
Term Maximum Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The highest altitude or flight level authorized by the designated authority for aircraft operations.

Definition Source

  • AIFDD

Note

When specified, the maximum altitude overrides the vertical upper limit, in those parts of the airspace where the vertical upper limit is situated below the maximum altitude.

Military Operations Area

Link Semantic Value
Term Military Operations Area
Status


Mandatory for


Contexts


Categories


Synonyms

Military Operating Area (official ICAO term)

Military Operational Area

Related entries


Broader term

Special Use Airspace

Narrower term


Abbreviation

MOA

Definition

An airspace of defined dimensions established to segregate certain military activities from IFR traffic and to identify, for VFR traffic, where the activities are conducted.

Definition Source

Transport Canada (2010) Glossary for Pilots and Air Traffic Services Personnel (TP 11958E) [3]

Note

Military Route Use

Link Semantic Value
Term Military Route Use
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The type of activity associated with a military air route.

Definition Source

  • AIFDD

Note

There is no known note.

Minimum Altitude

Link Semantic Value
Term Minimum Altitude
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The lowest altitude, height or flight level authorized by the designated authority for aircraft operations.

Definition Source

  • AIFDD

Note

When specified, the minimum altitude overrides the vertical lower limit, in those parts of the airspace where the vertical lower limit is situated below the minimum altitude.

Minimum En-Route Altitude

Link Semantic Value
Term Minimum En-Route Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • MEA

Definition

The minimum altitude for an en-route segment that provides adequate reception of relevant navigation facilities and Air Traffic Service (ATS) communications, complies with the airspace structure, and provides the required obstacle clearance.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Minimum Obstacle Clearance Altitude

Link Semantic Value
Term Minimum Obstacle Clearance Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • MOCA

Definition

The minimum altitude for a defined segment that provides the required obstacle clearance.

Definition Source

  • AIFDD

Note

There is no known note.

Minimum Reception Altitude

Link Semantic Value
Term Minimum Reception Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • MRA

Definition

The lowest altitude required in order to receive adequate signals to determine specific Very High Frequency (VHF) omnirange/tactical air navigation fixes.

Definition Source

  • AIFDD

Note

There is no known note.

Minimum Vectoring Altitude

Link Semantic Value
Term Minimum Vectoring Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

vectoring

Broader term


Narrower term


Abbreviation

MVA

Definition

the lowest altitude, expressed in feet AMSL (Above Mean Sea Level), to which a radar controller may issue aircraft altitude clearances during vectoring/direct routing except if otherwise authorized for radar approaches, departures and missed approaches.

Definition Source

SKYBRARY, reference tool for aviation safety knowledge, [4]

Note

In some sources, this altitude is also referred to as Minimum Flight Altitude (MFA), Minimum Radar Vectoring Altitude (MRVA) or ATC Surveillance Minimum Altitude (ASMA). (same source)

Obstacle Clearance Altitude

Link Semantic Value
Term Obstacle Clearance Altitude
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • OCA

Definition

The lowest altitude in reference to Mean Sea Level that is used in establishing compliance with appropriate obstacle clearance criteria.

Definition Source

  • AIFDD

Note

There is no known note.

Obstacle Clearance Height

Link Semantic Value
Term Obstacle Clearance Height
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • OCH

Definition

The lowest height above the elevation of the relevant runway threshold or the aerodrome elevation as applicable, used in establishing compliance with appropriate obstacle clearance criteria.

Definition Source

  • AIFDD

Note

Obstacle clearance height is referenced to the threshold elevation or in the case of non-precision approaches to the aerodrome elevation or the threshold elevation if that is more than 2 metres (7 feet) below the aerodrome elevation. An obstacle clearance height for a circling approach is referenced to the aerodrome elevation.

Off-Route Obstruction Clearance Altitude

Link Semantic Value
Term Off-Route Obstruction Clearance Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • OROCA

Definition

An altitude which provides obstruction clearance with a 1000 foot buffer in non-mountainous terrain areas and a 2000 foot buffer in designated mountainous areas when operating outside the established airway structure.

Definition Source

  • AIFDD

Note

This altitude may not provide signal coverage from ground-based navigational aids, air traffic control radar, or communications coverage.

Off-Route Terrain Clearance Altitude

Link Semantic Value
Term Off-Route Terrain Clearance Altitude
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

  • ORTCA

Definition

An altitude which provides at least a 3000 foot clearance from terrain when operating outside the established airway structure.

Definition Source

  • AIFDD

Note

This altitude may not provide signal coverage from ground-based navigational aids, air traffic control radar, or communications coverage.

Reduced Vertical Separation Minimum Lower Limit

Link Semantic Value
Term Reduced Vertical Separation Minimum Lower Limit
Status


Mandatory for


Contexts


Categories


Synonyms

RVSM Lower Limit

Related entries


Broader term


Narrower term


Definition

The altitude or flight level of the bottom of the Reduced Vertical Separation Minimum (RVSM) Airspace or RVSM portion of an airspace.

Definition Source

  • AIFDD

Note

There is no known note.

Reduced Vertical Separation Minimum Point Type

Link Semantic Value
Term Reduced Vertical Separation Minimum Point Type
Status


Mandatory for


Contexts


Categories


Synonyms

RVSM Point Type

Related entries


Broader term


Narrower term


Definition

The type of end point of the Reduced Vertical Separation Minimum (RVSM) route segment.

Definition Source

  • AIFDD

Note

For example: an RVSM entry point, or an RVSM exit point.

Reduced Vertical Separation Minimum Upper Limit

Link Semantic Value
Term Reduced Vertical Separation Minimum Upper Limit
Status


Mandatory for


Contexts


Categories


Synonyms

RVSM Upper Limit

Related entries


Broader term


Narrower term


Definition

The altitude or flight level of the top of the Reduced Vertical Separation Minimum (RVSM) Airspace or RVSM portion of an airspace.

Definition Source

  • AIFDD

Note

There is no known note.

Required Navigation Performance Type

Link Semantic Value
Term Required Navigation Performance Type
Status


Mandatory for


Contexts


Categories


Synonyms

RNP Type

Related entries

required navigation performance (RNP)

Broader term


Narrower term


Definition

A containment value expressed as a distance from the intended position within which flights would be located for at least 95 percent of the total flying time.

Definition Source

  • AIFDD

Note

For example: RNP 4 represents a navigation accuracy of plus or minus 7.4 kilometres (4 nautical miles) on a 95 percent containment basis. RNP is a statement of the navigation performance necessary for operation within a defined airspace.

Reverse Magnetic Track

Link Semantic Value
Term Reverse Magnetic Track
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The projection on the Earth's surface of the reciprocal of the path of an aircraft, the direction of which path at any point is expressed in degrees from Magnetic North, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

There is no known note.

Reverse True Track

Link Semantic Value
Term Reverse True Track
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The projection on the Earth's surface of the reciprocal of the path of an aircraft, the direction of which path at any point is expressed in degrees from True North, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

There is no known note.

Segment End Condition

Link Semantic Value
Term Segment End Condition
Status


Mandatory for


Contexts


Categories


Synonyms

End Condition Designator

Related entries


Broader term


Narrower term


Definition

A specification of the event that allows identifying the end of the leg and the start of the next leg on the procedure.

Definition Source

  • AIFDD

Note

For example: reaching an altitude or outbound timing.

Significant Point Association Use in Airspace

Link Semantic Value
Term Significant Point Association Use in Airspace
Status


Mandatory for


Contexts


Categories


Synonyms

Significant Association Type

Related entries


Broader term


Narrower term


Definition

The manner in which a significant point is used in association to an airspace.

Definition Source

  • AIFDD

Note

For example: entry point or exit point.

Significant Point Association to Airspace

Link Semantic Value
Term Significant Point Association to Airspace
Status


Mandatory for


Contexts


Categories

,

Synonyms

Significant Point in Airspace

Related entries


Broader term


Narrower term


Definition

The use and location relative to an airspace of a significant point.

Definition Source

  • AIFDD

Note

A significant point is a specified geographical location used to define an Air Traffic Service (ATS) route, the flight path of an aircraft and/or for other navigation/ATS purposes.

Significant Point Relative Location to Airspace

Link Semantic Value
Term Significant Point Relative Location to Airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The location of a significant point in relation to an airspace, as a category.

Definition Source

  • AIFDD

Note

For example: In, Out, or On Border.

Special Activity Airspace

Link Semantic Value
Term Special Activity Airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

SAA

Definition

[U.S.] Any airspace with defined dimensions within the National Airspace System wherein limitations may be imposed upon aircraft operations. This airspace may be restricted areas, prohibited areas, military operations areas, air ATC assigned airspace, and any other designated airspace areas.

Definition Source

FAA, Pilot-Controller Glossary, 2010 [5]

Note

The dimensions of this airspace are programmed into URET and can be designated as either active or inactive by screen entry. Aircraft trajectories are constantly tested against the dimensions of active areas and alerts issued to the applicable sectors when violations are predicted. (Note source: FAA Pilot-Controller glossary)

Special Use Airspace

Link Semantic Value
Term Special Use Airspace
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term

alert area

Military Operations Area (MOA)

prohibited area

restricted area

warning area

Abbreviation

SUA

Definition

Airspace of defined dimensions identified by an area on the surface of the earth wherein activities must be confined because of their nature and/or wherein limitations may be imposed upon aircraft operations that are not a part of those activities.

Definition Source

FAA, Pilot/Controller Glossary, [6]2010

Note

Temporary Reserved Area

Link Semantic Value
Term Temporary Reserved Area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

Cross-Border Area (CBA)

Temporary Segregated Area (TSA)

Broader term


Narrower term


Abbreviation

TRA

Definition

a defined volume of airspace normally under the jurisdiction of one aviation authority and temporarily reserved, by common agreement, for the specific use by another aviation authority and through which other traffic may be allowed to transit, under ATC clearance.

Definition Source

EUROCONTROL (2010) EUROCONTROL Guidelines, The ASM Handbook, Airspace Management Handbook for Application of the Concept of the Flexible Use of Airspace, Ed. 3.0

Note

Temporary Segregated Area

Link Semantic Value
Term Temporary Segregated Area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries

Cross-Border Area (CBA)

Temporary Reserved Area (TRA)

Broader term


Narrower term


Abbreviation

TSA

Definition

a defined volume of airspace normally under the jurisdiction of one aviation authority and temporarily segregated, by common agreement, for the exclusive use by another aviation authority and through which other traffic will not be allowed to transit.

Definition Source

EUROCONTROL (2010) EUROCONTROL Guidelines, The ASM Handbook, Airspace Management Handbook for Application of the Concept of the Flexible Use of Airspace, Ed. 3.0

Note

True Bearing

Link Semantic Value
Term True Bearing
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The horizontal direction of an object or point measured clockwise from True North up to, but not including, 360 degrees.

Definition Source

  • AIFDD

Note

The Magnetic Bearing added to the Magnetic Variation equals the True Bearing.

True Track

Link Semantic Value
Term True Track
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The projection on the Earth's surface of the path of an aircraft, the direction of which path at any point is expressed in arc degrees from True North, as published by the appropriate authority.

Definition Source

  • AIFDD

Note

There is no known note.

Turn Direction

Link Semantic Value
Term Turn Direction
Status


Mandatory for


Contexts


Categories

,

Synonyms


Related entries


Broader term


Narrower term


Definition

The applicable direction of the aircraft turn.

Definition Source

  • AIFDD

Note

For example: left or right.

Unpublished route

Link Semantic Value
Term unpublished route
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Abbreviation

Definition

A route for which no minimum altitude is published or charted for pilot use. It may include a direct route between NAVAIDs, a radial, a radar vector, or a final approach course beyond the segments of an instrument approach procedure.

Definition Source

FAA (2011) Pilot/Controller glossary [7]

Note

User Preferred Route

Link Semantic Value
Term User Preferred Route
Status

agreed

Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Shared Business or Mission Trajectory

Broader term


Narrower term


Abbreviation

UPR

Definition

Defined during the planning phase by Airspace Users, the UPR describes the entire airborne phase of a flight as an expression of their Business / Mission intentions.

Definition Source

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

2.«Free Route Task Force», Edition 00.01.00 (21.03.2014).

Note

The Airspace Users are free to define UPRs taking into account the network constraints already defined and shared. The User Preferred Route may include a part freely defined in Free Routing Airspace, a part chosen among a set of several available published routes (direct or not) outside the Free Routing Airspace, the description of the related transition phases and cruising, climbing and descending profiles. The User preferred trajectory computed from the UPR is published by the Airspace User for collaborative ATM planning purposes as Shared Business / Mission Trajectory.

Lexicon Release

Lexicon Release 2015.1

Vertical Lower Limit

Link Semantic Value
Term Vertical Lower Limit
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The altitude, height or flight level of the bottom of the airspace, air route, or holding pattern.

Definition Source

  • AIFDD

Note

There is no known note.

Vertical Override Limit

Link Semantic Value
Term Vertical Override Limit
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The numerical value of an altitude that may be assigned by Air Traffic Control (ATC) when different from the relevant published value.

Definition Source

  • AIFDD

Note

There is no known note.

Vertical Upper Limit

Link Semantic Value
Term Vertical Upper Limit
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term


Narrower term


Definition

The altitude, height or flight level of the top of the airspace, air route, or holding pattern.

Definition Source

  • AIFDD

Note

There is no known note.

Warning area

Link Semantic Value
Term warning area
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

Special Use Airspace

Narrower term


Abbreviation

Definition

type of Special Use Airspace "over international waters in which, because of military exercise, non-participating aircraft may be at risk."

Definition Source

Jane's Aerospace Dictionary, 1988, 3rd Ed.

Note

U.S.: A warning area is airspace of defined dimensions, extending from 3 NM outward from the coast of the United States, that contains activity that may be hazardous to nonparticipating aircraft. The purpose of such warning areas is to warn nonparticipating pilots of the potential danger. A warning area may be located over domestic or international waters or both. (source:FAA, Pilot/Controller Glossary)

Way-point Type

Link Semantic Value
Term Way-point Type
Status


Mandatory for


Contexts


Categories


Synonyms


Related entries


Broader term

way-point

Narrower term


Definition

A characteristic describing the aircraft's flight path when navigating by or over a waypoint.

Definition Source

Aeronautical Information Feature Data Dictionary (AIFDD)

Note

Waypoint

Link Semantic Value
Term waypoint
Status


Mandatory for


Contexts


Categories


Synonyms

spelling variant: way-point

Related entries


Broader term


Narrower term


Abbreviation

WPT

Definition

A specified geographical location used to define an area navigation route or the flight path of an aircraft employing area navigation. Waypoints are identified as either: Fly-by waypoint [...] or Flyover waypoint [...]

Definition Source

ICAO (2006), doc. 8168 (Aircraft Operations), Vol. I (Flight Procedures)

Note