Service Identification

Service Abstract

service abstract

The Digital NOTAM Subscription and Request Service allows the service consumer to get aeronautical information in accordance with the Digital NOTAM Specification. The aeronautical information conforms to the event scenarios that are supported by Digital NOTAM such as runway closures. The service consumer may subscribe to the service, specifying the event scenarios of interest. It is also possible to send a direct request to the service to get the aeronautical information. The information returned is in the form of an AIXM 5.1.1 message. This supports the integration of the latest information into an existing aeronautical information store in the various ATM systems.

Service Definition Provider

service definition provider	name	EUROCONTROL
	description	EUROCONTROL is an intergovernmental organisation with 41 Member and 2 Comprehensive Agreement States.
	point of contact	swim@eurocontrol.int

Geographical Extent of Information

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title Explanatory note
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geographical extent of information

Service Categories

Service Standard Reference

Service Standard Reference

Operational Environment

operational environment	operational needs	Air traffic management is defined by ICAO as the "dynamic, integrated management of air traffic and airspace including air traffic services, airspace management and air traffic flow management - safely, economically and efficiently - through the provision of facilities and seamless services in collaboration with all parties and involving airborne and ground-based functions". Stakeholders involved in air traffic management need aeronautical data concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential for flight operations. This service satisfies this need by allowing clients to subscribe to event scenarios and to be notified when the aeronautical data described in the event scenario is affected. The aeronautical data can be used, e.g., in pre-flight information bulletins. It can also be used to improve decision making thus positively impacting the efficiency of their planning and flight executions, enabled through automatic data verification and graphical visualisation. The aeronautical data is also used in other systems such as those used for airspace reservations (ARES). A list of these is available in Appendix C. This service satisfies this need by offering the aeronautical data (in the form of event features) as regulated by ICAO Annex 15 - Aeronautical Information Services. The scope covers the event encodings outlined in the Digital NOTAM Specification including aerodrome data for the 18 airports listed in EU Implementing Regulation 2021/116 - Common Project One.
	capabilities	The service offers subscription and request capabilities to distribute aeronautical data based on event scenarios.
	information exchange requirements	IER 1 Digital NOTAM Exchange (A3SG-IER-05)

Service Functions

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service functions	function	name	Subscribe to event scenario
		description	The service consumer shall be able to subscribe/unsubscribe in order to receive information based on an event scenario.
		real-world effect	Service consumer subscribes to information offered by the service.
	function	name	Request a Digital NOTAM
		description	The service consumer shall be able to request aeronautical information in the form of a Digital NOTAM.
		real-world effect	Service consumer receives the Digital NOTAM.
	function	name	Distribution
		description	When new data is available, it shall be distributed to the subscribers.
		real-world effect	Service consumer is notified when a change happens based on an event scenario.
	function	name	Check distribution list
		description	The service consumer shall be able to check if it has received all the distributions expected to be received.
		real-world effect	Service consumer has an understanding of the distributions.
	function	name	Request Digital NOTAM reissue
		description	The service consumer shall be able to request the redistribution of a Digital NOTAM (if, for example, the original distribution was not received).
		real-world effect	Service consumer receives a Digital NOTAM.

Service Access and Use Conditions

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title Explanatory note
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service access and use conditions	legal constraints
	service policies	business policy
		operational policy
		technical policy
	service consumption constraints

Security Constraints

security constraints	authentication	The service may offer unauthenticated/public use. If the use is authenticated, the service shall ensure consumer authentication in accordance with the EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of a X.509 certificate or the use of a username/password (SASL). The service shall ensure provider authentication in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of a X.509 certificate.
	authorisation	The service shall ensure that satisfactory authorisation is put in place according to EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile requirement SWIM-TIYP-0070.
	confidentiality	The service shall ensure point-to-point confidentiality in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of Transport Layer Security (TLS) 1.2 or above.
	integrity	The service shall ensure point-to-point integrity in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile through the use of Transport Layer Security (TLS) 1.2 or above.

Quality of Service

quality of service	performance	capacity	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
		response time	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	reliability	availability	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
		recoverability	The service shall achieve a quality that is sufficient to ensure the service is fit for purpose.
	security	confidentiality	The service shall ensure confidentiality by using SWIM Technical Infrastructure (TI) Yellow Profile bindings.
		integrity	The service shall ensure integrity by using SWIM Technical Infrastructure (TI) Yellow Profile bindings.

Quality of Data

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quality of data

The aeronautical data offered by the service shall satisfy the applicable sections of Commission Implementing Regulation (EU) 2017/373 of 1 March 2017. The aeronautical data offered by the service shall be encoded according to the event scenarios given in the Digital NOTAM Specification. The aeronautical data offered by the service shall apply the AIXM 5.1.1 coding guidelines. This includes: Common Coding Guidelines Technical Coding Guidelines

Source of Information

Service Validation Information

Service Validation Information

Application Message Exchange Pattern

application message exchange pattern	PUBLISH_SUBSCRIBE SYNCHRONOUS_REQUEST_REPLY

Service Behaviour

Service Monitoring

Service Interfaces

service interfaces	interface	name	Digital NOTAM Subscription and Request Service Subscription Interface
		description	Allows the service consumer to select and subscribe to event scenarios of interest. It allows the service consumer to manage the subscriptions e.g. to pause a subscription of to unsubscribe.
		provider/consumer side	Provider side
	interface	name	Digital NOTAM Subscription and Request Service Distribution Interface
		description	Allows the service provider to distributes AIXM Basic Messages based on the event scenario that has triggered the need for the service consumer to be updated.
		provider/consumer side	Provider side
	interface	name	Digital NOTAM Subscription and Request Service Request Interface
		description	Allows the service consumer to request an AIXM Basic Message based on filters which are linked to the event feature.
		provider/consumer side	Provider side

SWIM TI Profile and Interface Bindings

Digital NOTAM Subscription and Request Service Subscription Interface

SWIM TI profile and interface bindings	profile name	EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile
	profile version	1.1
	selected service interface binding	WS_LIGHT
	selected network interface binding	The service shall use the network bindings of the SWIM Technical Infrastructure (TI) Yellow Profile.
	description

Digital NOTAM Subscription and Request Service Distribution Interface

Digital NOTAM Subscription and Request Service Request Interface

Service Interface Protocols and Data Format

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service interface protocols and data format	transport / messaging protocols	The service shall use TLS1.2 or later in accordance with EUROCONTROL Specification for SWIM Technical Infrastructure (TI) Yellow Profile.
	data format	Info This is captured at Service Message level (see below).

Service Operations

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Info
title Explanatory note
The Operation Environment and Service Functions use the term "event scenario". The Service Operations use the term "topic". This is a more abstract term and is typically used in the context of publish-subscribe services. In this case, the topics are aligned with the event scenarios.

Digital NOTAM Subscription and Request Service Subscription Interface

Service operations	operation	operation name	subscribe
		description	This operation allows a service consumer to subscribe to event scenarios of interest.
		messages	SubscriptionRequest, SubscriptionReply
	operation	operation name	unsubscribe
		description	This operation allows a service consumer to unsubscribe from event scenarios of interest.
		messages	UnsubscriptionRequest, UnsubscriptionReply
	operation	operation name	pause
		description	This operation allows a service consumer to pause the subscription for a particular topic subscription.
		messages	PauseRequest, PauseReply
	operation	operation name	resume
		description	This operation allows a service consumer to resume a subscription that had been paused.
		messages	ResumeRequest, ResumeReply
	operation	operation name	getSubscriptions
		description	This operation allows a service consumer to obtain the list of subscriptions.
		messages	GetSubscriptionsRequest, GetSubscriptionsReply
	operation	operation name	getSubscriptionDetails
		description	This operation allows a service consumer to obtain information on a specific subscription.
		messages	GetSubcriptionDetailsRequest, GetSubcriptionDetailsReply
	operation	operation name	getTopics
		description	This operation allows a service consumer to request the list of topics (event scenarios) available for subscription.
		messages	GetTopicsRequest, GetTopicsReply
	operation	operation name	getTopic
		description	This operation allows a service consumer to obtain information on a specific topic (event scenario).
		messages	GetTopicRequest, GetTopicReply

Digital NOTAM Subscription and Request Service Distribution Interface

Digital NOTAM Subscription and Request Service Request Interface

Service Messages

Service Messages

Information Definition (Minimum) and (Extended)

information definition	The service shall expose the event scenarios found in Appendix B. These reflect the Digital NOTAM Specification.  The event scenarios use features that are in the Aeronautical Information Exchange Model (AIXM) 5.1.1 and the AIXM Event Extension. The AIXMBasicMessage that is returned by the service shall contain an event feature and the related AIXM features and time slices.

Filter Encoding

Machine-Readable Service Interface Definition

Model View

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title Explanatory note
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model view	reference

Abbreviations and Acronyms

abbreviations and acronyms	abbreviation	code	AISP
		term	Aeronautical Information Service Provider
	abbreviation	code	AIXM
		term	Aeronautical Information Exchange Model
	abbreviation	code	AMQP
		term	Advanced Message Queuing Protocol
	abbreviation	code	ARES
		term	Airspace Reservation
	abbreviation	code	ATM
		term	Air Traffic Management
	abbreviation	code	NOTAM
		term	Notice to Airmen
	abbreviation	code	OGC
		term	Open Geospatial Consortium
	abbreviation	code	SASL
		term	Simple Authentication and Security Layer
	abbreviation	code	SESAR
		term	Single European Sky ATM Research
	abbreviation	code	SWIM
		term	System Wide Information Management
	abbreviation	code	TI
		term	Technical Infrastructure
	abbreviation	code	TLS
		term	Transport Layer Security
	abbreviation	code	WFS
		term	Web Feature Service
	abbreviation	code	WFS-TE
		term	Web Feature Service - Temporality Extension

Appendix A: References

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references	reference	title	EU Implementing Regulation 2021/116 - Common Project One
		version	1 February 2021
		description	Commission Implementing Regulation (EU) 2021/116 of 1 February 2021 on the establishment of the Common Project One supporting the implementation of the European Air Traffic Management Master Plan provided for in Regulation (EC) No 550/2004 of the European Parliament and of the Council, amending Commission Implementing Regulation (EU) No 409/2013 and repealing Commission Implementing Regulation (EU) No 716/2014.
		url	https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32021R0116
		document type
	reference	title	Digital NOTAM Specification
		version	"Version 2.0" - WORK IN PROGRESS
		description	The Digital NOTAM Specification defines the rules for harmonised encoding of NOTAM information as digital AIXM data sets (version 5.1 or later).
		url	https://ext.eurocontrol.int/aixm_confluence/display/DNOTAM/Overview
		document type
	reference	title	Commission Implementing Regulation (EU) 2017/373
		version	1 March 2017 (as amended)
		description	Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight, repealing Regulation (EC) No 482/2008, Implementing Regulations (EU) No 1034/2011, (EU) No 1035/2011 and (EU) 2016/1377 and amending Regulation (EU) No 677/2011.
		url	https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A02017R0373-20230126
		document type
	reference	title	AIXM Coding - Common coding guidelines
		version
		description	Coding guidelines for complex AIXM properties such as geometry, schedules, annotations, etc. It also contains general coding guidelines which are not for a particular subject area but applicable for all AIXM features.
		url	https://ext.eurocontrol.int/aixm_confluence/display/ACG/Common+coding+guidelines
		document type
	reference	title	AIXM Coding - Data coding guidelines
		version
		description	A set of coding guidelines to promote the interoperability of AIXM 5.1.1 formatted data.
		url	https://aixm.aero/page/data-coding-guidelines
		document type
	reference	title	Aeronautical Information Exchange Model (AIXM)
		version	5.1.1
		description
		url	https://www.aixm.aero/schema/5.1.1/AIXM_Features.xsd
		document type	INFORMATION_DEFINITION
	reference	title	AIXM Event Extension
		version
		description	The schema in support of the Event Extension
		url	https://www.aixm.aero/schema/5.1.1/event/version_5.1.1-i/Event_Features.xsd
		document type	INFORMATION_DEFINITION
	reference	title	AIXM 5.1.1 semantic correspondence
		version
		description	The report on the semantic correspondence between AIXM 5.1.1 and the ATM Information Reference Model (AIRM)
		url	https://airm.aero/developers/aixm-5.1.1-to-airm-1.0.0-index
		document type	SEMANTIC_CORRESPONDENCE_REPORT
	reference	title	OGC Filter Encoding 2.0 Encoding Standard
		version
		description	This jointly developed OGC and ISO TC/211 International Standard describes an XML and KVP encoding of a system neutral syntax for expressing projections, selection and sorting clauses collectively called a query expression. These components are modular and intended to be used together or individually by other standards which reference this International Standard. Note: This is equivalent to ISO 19143 - Geographic Information - Filter encoding.
		url	https://www.ogc.org/docs/is
		document type
	reference	title	OGC Web Feature Service (WFS) Temporality Extension (WFS-TE)
		version	12-027r3
		description	This OGC discussion paper provides a proposal for a temporality extension for the WFS 2.0 and FES 2.0 standard.
		url	https://portal.ogc.org/files/?artifact_id=58922
		document type
	reference	title	Digital NOTAM Specification - General Principles
		version
		description	General principles for encoding digital NOTAM.
		url	https://ext.eurocontrol.int/aixm_confluence/display/DNOTAM/General+Principles
		document type
	reference	title	Message Exchange Patterns: Identification Guidelines.
		version	JULY 2nd, 2019
		description	Document intended to facilitate the understanding of message exchange patterns from an application and Technical Infrastructure perspective.
		url	https://reference.swim.aero/technical-infrastructure/message-exchange-patterns-identification-guidelines.html
		document type	SERVICE_BEHAVIOUR_DESCRIPTION
	reference	title	Publish/Subscribe Push MEP: Implementation Guidance
		version	JULY 2nd, 2019
		description	This document intends to serve as implementation guidance of the Publish/Subscribe Push Message Exchange Pattern using SWIM-TI Yellow Profile Service Bindings.
		url	https://reference.swim.aero/technical-infrastructure/guidance-for-pub-sub-push-implementation.html
document type

Appendix B: Information Definition for Digital NOTAM Subscription and Request Service

BluetitleAGREEDThe table below lists the event scenarios outlined in the Digital NOTAM Specification. It gives the identifier and the name of the scenario. It then lists the version of the scenario that shall be used and the level of implementation expected.

event scenario identifier	event scenario name	event scenario version	mandatory (M) / recommended (R) / optional (O)	notes
AD.CLS	Aerodrome/Heliport - closure (NOTAM)	2.0	M
AD.LGT	Ground Light System unserviceable - decoding	1.0	O
AD.LIM	Aerodrome/Heliport - limitation (NOTAM)	2.0	M
AGS.UNS	Airport Ground Service unserviceable - decoding	1.0	O
APE.CLS	Apron element - closure (NOTAM)	2.0	R
APE.LIM	Apron portion - usage limitation change (NOTAM)	2.0	R
APN.CLS	Apron - closure (NOTAM)	2.0	R
APN.LIM	Apron - usage limitation change (NOTAM)	2.0	R
ATSA.ACT	Published ATS airspace - activation or deactivation - decoding	2.0	R
ATSA.NEW	Ad-hoc ATS airspace - creation - decoding	2.0	R
DEI.IOP	De-icing in operation	1.0	O
FFS.CHG	Rescue and firefighting services change - decoding	1.0	O
GNSS.UNS	GNSS not available - decoding	1.0	n/a	Depends on AIXM 5.2
LVP.IOP	Low Visibility Procedures in operation	1.0	O
NAV.UNS	Navaid unserviceable - decoding	2.0	R
OBL.UNS	Obstacle lights unserviceable - decoding	2.0	R
OBS.NEW	Obstacle new - decoding	2.0	M
RCP.CHG	Runway centreline point - displacement	2.0	R
RDD.CHG	Runway declared distance(s) - change	2.0	R
RTE.CLS	Route portion closure - decoding	2.0	R
RTE.OPN	Route portion opening - decoding	1.0	O
RWY.CLS	Runway - closure (NOTAM)	2.0	M
RWY.LIM	Runway - usage limitation change (NOTAM)	2.0	M
SAA.ACT	Published special activity area - activation (NOTAM)	2.0	M
SAA.NEW	Ad-hoc special activity area - creation (NOTAM)	2.0	M
SFC.CON	Surface condition report - decoding	2.0	M
STAND.CLS	Aircraft stand - closure (NOTAM)	2.0	R
STAND.LIM	Aircraft stand - usage limitation change (NOTAM)	2.0	R
TWY.CLS	Taxiway - closure (NOTAM)	2.0	R
TWY.LIM	Taxiway - usage limitation change (NOTAM)	2.0	R
WLF.HZD	Wildlife Hazard	1.0	O
OTHER	Other	2.0	R	OTHER Event Scenario that allows for anything even if not tied to an AIXM feature.

Appendix C: Operational Needs

Transversal

• Collaborative information sharing is essential for decision making involving multiple actors. Automatic taxi with time and path information on the ground, collaborative decision making during emergencies, de-icing operations and infrastructure availability information are examples that involve multiple actors including the aircraft crew.

By service consumer role