a) ATS airspace

Introduction & Background

Minimum Data Items

Due to the extent of the AIXM 5 diagrams, the mapping of the PANS-AIM "ATS airspace" subject is divided into several parts.

The first part contains the basic mapping, i.e. those properties that are listed in PANS-AIM Chapter 5.3.3.1 "AIP Data set" , hence considered as the minimum data set to be provided. These are

a) ATS airspace (type, name, lateral limits, vertical limits, class of airspace).

Attention, conditional items should be considered obligatory if the tables from ENR 2.1 and/or AD 2,17 and/or AD 3.16 are removed from the AIP.

Conditional & Optional Data Items

The other parts contain the mapping for the additional data items identified in the section marked as #AIP-DS# in PANS-AIM "Contents of the Aeronautical Information Publication (AIP)".

In the context of this mapping, these properties are considered as conditional AIP data set items.

All other data items defined in the PANS-AIM Data Catalogue are considered optional.

Page Table of Content

Basic mapping (minimum data set)

The properties of the ATS Airspace subject are mapped to the following main AIXM 5 classes:

PANS-AIM	Description (PANS-AIM)	AIXM 5	Definition (AIXM 5.1.1)	Remarks
Type	Type of ATS airspace according to ICAO Annex 11.	Airspace.type, (and Airspace.localType, if necessary)	Airspace: A defined three dimensional region of space relevant to air traffic. type: An indicator of the general structure or characteristics of a particular airspace. localType: A type designator used locally (inside a State or a Region) for a particular airspace sub-category.	The ATS Airspace types explicitly listed in the PANS-AIM and the Aeronautical Data Catalogue are: FIR, UIR, TMA, CTA, CTR (and ELT areas). Although other types of airspaces that may also be published in ENR 2.1 or AD 2.17, e.g. UTA, OCA, ATZ, MATZ, etc. are not explicitly mentioned in PANS-AIM, these types are also considered in the coding guidelines section (see coding topic Basic Data of Airspace for details). Info Mapping Decision: Both attributes of the Airspace feature are mapped: type and localType. Rationale: For these other airspaces mentioned above the localType attribute may be used in case there is no corresponding value in the type attribute.
Name	The designator given to an airspace by a responsible authority	Airspace.name, (and Airspace.designator, if necessary)	name: The name given to an airspace by a responsible authority. It should be written as published, with no significance to upper or lower case letters. designator: A published sequence of characters allowing the identification of the airspace.	Info PANS-AIM is not clear in regard to the application of the name and designator for an ATS airspace. In the data catalogue it does not define a dedicated 'designator' property for ATS airspaces but just a 'name' property. The description for name reads like it would be the designator (see on the left). Also, in AD 2.17/3.16 term 'airspace designation' is used but name is not. Mapping Decision: Both attributes of the Airspace feature are mapped: name and designator. Rationale: In real life some ATS Airspaces do have a name and a designator e.g. An FIR with name 'Vienna' and designator 'LOVV'.
Lateral limits	The surface defining the horizontal shape of the Airspace	( AirspaceVolume.horizonalProjection.Surface, and AirspaceVolume.horizontalProjection.Surface.horizontalAccuracy ) or ( AirspaceVolume.centreline.Curve and AirspaceVolume.centreline.Curve.horizontalAccuracy, and AirspaceVolume.width )	AirspaceVolume: A defined volume in the air, described as horizontal projection with vertical limits. Surface: A 2-dimensional primitive and is composed of one or more surface patches as specified in ISO 19107:2003. Curve: A one-dimensional geometric primitive, representing the continuous image of a line. horizontalAccuracy: The difference between the recorded horizontal coordinates of a surface / curve and its true position referenced to the same geodetic datum expressed as a circular error at 95 percent probability. width: The width of the corridor, in case the AirspaceVolume has been originally defined as having a corridor shape.	Info In the PANS-AIM Aeronautical Data Catalogue the lateral limits of an airspace are defined as polygon (Surface). In AIXM it is also possible to encode an airspace as a corridor (Curve). In case of a corridor also the width has to be specified. Mapping Decision: Both alternatives for the lateral limits of an Airspace feature are mapped: Surface and Curve. Rationale: In real life the lateral limits of an airspaces may be defined as a corridor. Note In AIXM 5 the lateral limits of an Airspace may also be defined by an aggregation of one or more other airspace(s) (using AirspaceGeometryComponent or AirspaceVolumeDependency). To avoid complexity this is not mapped but explained in detail in the coding guidelines (see coding topic Geometry of Airspace).
Vertical limits - Upper limit	The upper limit of the airspace	AirspaceVolume.upperLimit and AirspaceVolume.upperLimitReference	upperLimit: The vertical distance of the upper bound (ceiling) of an airspace volume. The vertical distance is measured relative to a separately specified upper limit reference. upperLimitReference: The reference surface (Mean Sea Level, Ground, standard pressure, etc.) used for the value of the upper limit of an airspace volume.	Note in AIXM 5 the vertical limits of an Airspace may also be defined by an aggregation of one or more other airspace(s) (using AirspaceGeometryComponent or AirspaceVolumeDependency). To avoid complexity this is not mapped but explained in detail in the coding guidelines (see coding topic Geometry of Airspace).
Vertical limits - Lower limit	The lower limit of the airspace	AirspaceVolume.lowerLimit and AirspaceVolume.lowerLimitReference and AirspaceVolume.annotation.Note.namedProperty equal to 'lowerLimit' .translatedNote.LinguisticNote.note	lowerLimit: The vertical distance of the lower bound (floor) of an airspace volume. The vertical distance is measured relative to a separately specified lower limit reference. lowerLimitReference: The reference surface (Mean Sea Level, Ground, standard pressure, etc.) used for determining the value of the lower limit of an airspace volume.	See Note above. AIXM 5.1.1 issue_001_Airspace.lowerLimit PANS-AIM defines an accuracy for the lower limit of an ATS airspace. There is no dedicated attribute in AIXM 5.1.1. Workaround: A Note may be used to encode that information. Status: CCB AIXM-269.
Class of airspace	A categorisation of airspace which determines the operating rules, flight requirements, and services provided.	Airspace.class.AirspaceLayerClass.classification	AirspaceLayerClass: The airspace class for a portion of airspace between two specified vertical levels. classification: A classification of airspace which determines the operating rules, flight requirements, and services provided. According to ICAO Annex 11 'Air Traffic Services', Appendix 4.	Note In AIXM also for the airspace layer vertical limits may be defined (in case an airspace as more than one class layer). For details see coding guidelines Class of Airspace. Aixm 5.2 Improvements A change proposal (AIXM-550) for the next AIXM 5.2 version has been approved by the AIXM Change Control Board, where the AirspaceLayerClass complex property is added to the RouteSegment feature. The coding guidelines provided here are aligned with forward/backward conversion rules contained in the AIXM-550 Change Proposal.

Info

Mapping Decision: The attributes designatorICAO, controlType and upperLowerSeperation of the Airspace feature and minimumLimit and maximumLimit of the AirspaceVolume feature have no mapping.

Rationale: These data items are not defined in PANS-AIM.

(However, these attributes are discussed in the guidelines section, see coding topic Basic Data of Airspace.)

Additional mapping (ATS Unit & Frequency)

Additional (conditional) data items, regarding the ATS Unit providing a service within the airspace are listed in the following section of Appendix 2 of PANS-AIM marked with #AIP-DS#:

ENR 2.1 FIR, UIR, TMA and CTA

2) identification of unit providing the service;
3) call sign of aeronautical station serving the unit and language(s) used, specifying the area and conditions, when and where to be used, if applicable;
4) frequencies, and if applicable SATVOICE number , supplemented by indications for specific purposes; and

AD 2.17 / AD 3.16 Air traffic services airspace

4) call sign and language(s) of the ATS unit providing service;

The additional data elements contained in this section is mapped to the following main AIXM 5 features and its properties:

PANS-AIM	Description (PANS-AIM)	AIXM 5	Definition (AIXM 5.1.1)	Remarks
ATS Unit	Unit providing service	( SearchRescueService.clientAirspace and SearchRescueService.serviceProvider ) and/or ( InformationService.clientAirspace, and InformationService.serviceProvider ) and/or ( AirTrafficControlService.clientAirspace, and AirTrafficControlService.serviceProvider )	Service: The provision of tangible goods, information, instructions, guidance, etc. to pilots, flights, aircraft operators and other personnel and institutions concerned with flight operations. serviceProvider: The Unit that provides the Service. Unit: A generic term referring to all types of entities providing all types of aeronautical related services. This primarily includes Air Traffic Management (ATM) Units but also includes entities such as Search and Rescue entities, Meteorological offices, Communications office/centres, etc. clientAirspace: The airspace for which the air traffic separation service is provided.	In AIXM 5, there is no direct association between an Airspace and its ATS Unit, hence the mapping has to be done via the corresponding Service for the Airspace, which is provided by a Unit. In PANS-AIM there is no requirement/property to code the type of Service that is provided. It seems that the type of Service is rather part of the CallSign (e.g. LJUBLJANA INFORMATION or WIEN RADAR). AirTrafficManagmentService is not an ATS Unit and thus not mapped.
ATS Unit - Name	The name of the unit providing the service	Unit.name and/or Service.name	Unit: A generic term referring to all types of entities providing all types of aeronautical related services. This primarily includes Air Traffic Management (ATM) Units but also includes entities such as Search and Rescue entities, Meteorological offices, Communications office/centres, etc. Unit.name: The full textual name of a unit. This name must be established according to the rules specified by International Civil Aviation Organisation (ICAO), and specifically in the official language of the country, transposed into the Latin Alphabet where necessary. Service.name: A free text name by which the service is identified.	Service.name may be coded, if appropriate.
ATS Unit - Call sign	The call sign of the aeronautical station serving the unit	SearchRescueService.call-sign.CallsignDetail.callSign, and/or InformationService.call-sign.CallsignDetail.callSign, and/or AirTrafficControlServiceService.call-sign.CallsignDetail.callSign	callSign: The full textual service provider identification or call-sign for a particular frequency. For example, Athinai Control, Malmoe Radar, etc..
ATS Unit - Language	Information on the language(s) used, specifying area and conditions, when and where to be used, if applicable	SearchRescueService.call-sign.CallsignDetail.language, and/or InformationService.call-sign.CallsignDetail.language, and/or AirTrafficControlService.call-sign.CallsignDetail.language	language: A code indicating the language in which the service is provided on a particular frequency, as associated with a particular call-sign.
ATS Unit - Applicability	Information on the area and conditions when to be used	SearchRescueService.annotation.Note, and/or InformationService.annotation.Note, and/or AirTrafficControlService.annotation.Note, and/or Airspace.annotation.Note	Note: A general text note for a feature or for one of its properties.	Note.purpose equal-to 'REMARK' The applicability of the ATS unit may also be coded as a Note for the Airspace.
[Frequency]*	NA	AirTrafficControlService.radioCommunication, and/or InformationService.radioCommunication, and/or SearchRescueService.radioCommunication,	RadioCommunicationChannel: A radio frequency band of sufficient width and associated identification data used for one- or two-way communication from or to a transmitter on the ground or in the air.	Note regarding AIXM In AIXM 5, there is no direct association between an Airspace and Frequency. Hence, the mapping has to be done via the corresponding Service for the Airspace, which uses one or more frequencies. Note regarding PANS-AIM *In the latest version of the PANS-AIM Aeronautical Data Catalogue the 'Frequency' property and its sub-properties have been replaced by the SATVOICE property and sub-properties. But in ENR 2.1 Frequency is still mentioned besides SATVOICE (see above ENR 2.1). Hence Frequency mapping is considered to be still relevant.
[Frequency - Value]	NA	RadioCommunicationChannel.frequencyTransmission and/or RadioCommunicationChannel.frequencyReception	frequencyTransmission: The value of the transmission frequency. frequencyReception: The value of the reception frequency.	see Notes above
[Frequency - Purpose]	NA	RadioCommunicationChannel.rank	rank: A code indicating the role of the communication channel, in terms of primary, alternate, emergency, etc.	see Notes above
SATVOICE number	none	AirTrafficControlService.annotation.Note, and/or InformationService.annotation.Note, and/or SearchRescueService.annotation.Note,	Note: A general text note for a feature or for one of its properties.	AIXM 5.1.1 issue_002_SATVOICE SATVOICE is not covered by AIXM 5.1.1. Workaround: May be coded as Note for the Service. Status: See CCB AIXM-189
SATVOICE number -Value	The SATVOICE number of the ATS airspace	see above	see above	see above
SATVOICE number -Purpose	Indications for specific purposes of the SATVOICE number.	see above	see above	see above

Additional mapping (Hours of applicability & Hours of service)

Additional data elements regarding Hours of applicability of the airspace & Hours of service are listed in the following sections of Appendix 2 of PANS-AIM marked with #AIP-DS#:

ENR 2.1 FIR, UIR, TMA AND CTA

3) call sign of aeronautical station serving the unit and language(s) used, specifying the area and conditions, when and where to be used, if applicable;

AD 2.17 / AD 3.16 Air traffic services airspace

6) hours of applicability

The additional data elements contained in these sections are mapped to the following main AIXM 5 features and its properties:

PANS-AIM

Description (PANS-AIM)

AIXM 5

Definition (AIXM 5.1.1)

Remarks

ATS unit - Hours of service

Operational hours of the station serving the unit

SearchRescueService.availability.ServiceOperationalStatus.timeInterval

and/or

InformationService.availability.ServiceOperationalStatus.timeInterval

and/or

AirTrafficControlService.availability.ServiceOperationalStatus.timeInterval

availability: The operational status of the Service.

In general for airspaces published in ENR 2.1.

Hours of applicability

The hours of applicability of the airspace

Airspace.activation.AirspaceActivation.timeInterval

activation: The operational status of the Airspace.

Required by PANS-AIM for airspaces published in AD 2.17/3.16.

Additional mapping (Transition altitude)

Additional data items regarding the transition altitude is required in the following section of Appendix 2 PANS-AIM marked with #AIP-DS#:

AD 2.17 / AD 3.16 Air traffic services airspace

5) transition altitude

The additional data element contained in this section is mapped to the following main AIXM 5 features and its properties:

PANS-AIM	Description (PANS-AIM)	AIXM 5	Definition (AIXM 5.1.1)	Remarks
Transition altitude	The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes.	AirportHeliport.transitionAltitude	transitionAltitude: The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes at the airport/heliport.	Only relevant for ATS airspaces listed in AD 2.17/3.16. Info In AIXM 5.1.1 the transitionAltitude is an attribute of the AirportHeliport feature and not the Airspace.