Aeronautical Message Handling System (AMHS) or Air Traffic Services Message Handling System (ATSMHS) is a standard for aeronautical ground-ground communications (e.g. for the transmission of

NOTAM A NOTAM (ICAO & FAA: Notice to Airmen, CAA: Notice to Aviation or, for the FAA from 2021 to 2025, Notice to Air Missions) is a notice filed with an aviation authority to alert aircraft pilots of potential hazards along a flight route or at a loca ...

, flight plans or meteorological data) based on X.400 profiles. It has been defined by the

ICAO The International Civil Aviation Organization (ICAO ) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international sch ...

. IWXXM requires the use of AMHS for international exchange.

Levels of service

ICAO Doc 9880 Part II defines two fundamental levels of service within the ATSMHS; * Basic ATSMHS and * the Extended ATSMHS. Additionally, ICAO Doc 9880 (Part II, section 3.4) outlines different subsets of the Extended ATSMHS. The Basic ATSMHS performs an operational role similar to the

Aeronautical Fixed Telecommunication Network The Aeronautical Fixed Telecommunications Network (AFTN) is a worldwide system of aeronautical fixed circuits provided, as part of the Aeronautical Fixed Service, for the exchange of messages and/or digital data between aeronautical fixed stations ...

with a few enhancements. The Extended ATSMHS provided enhanced features but includes the Basic level of service capability; in this way it is ensured that users with Extended Service capabilities can inter-operate, at a basic level, with users having Basic Service capabilities and vice versa. The ATSMHS is provided by a set of end systems, which collectively comprise the ATS Message Handling System. The systems co-operate to provide users (human or automated) with a data communication service. The AMHS network is composed of interconnected ATS Message Servers that perform message switching at the application layer (Layer 7 in the

OSI model The Open Systems Interconnection (OSI) model is a reference model developed by the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems inter ...

). Direct users connect to ATS Message Servers by means of ATS Message User Agents. An ATS Message User Agent supporting the Extended level of service will use the Basic level of service to allow communication with users who only support the Basic ATSMHS.

Interoperability

In order to ensure unobstructed communication between the ANSPs, the European Air Navigation Planning Group (EANPG) of ICAO has defined 59 test cases in its EUR AMHS Manual (V5.0), 17/06/2010 (Appendix D, AMHS Conformance Tests), ASIA/PAC AMHS Manual (Annex B, AMHS Conformance and Compatibility Test, V2.0, 22/09/08) which have to be performed prior to establishment of bilateral links between the ANSPs. Those tests are conducted using a test engine (AMHS Conformance Test Tool) and verify the conformance to the AMHS standard, which is defined in ICAO Doc 9880-AN/466: Manual on Detailed Technical Specifications for the Aeronautical Telecommunication Network (ATN) using ISO/OSI Standards and Protocols, Second Advanced Edition - 2016, Part II. In the context of

Single European Sky The Single European Sky (SES) is a European Commission initiative that seeks to reform the European air traffic management system through a series of actions carried out in four different levels (institutional, operational, technological and cont ...

(SES) initiative and the European regulation EC552/2004

EUROCONTROL The European Organisation for the Safety of Air Navigation, commonly known as Eurocontrol (stylised ''EUROCONTROL''), is an international organisation working to achieve safe and seamless air traffic management across Europe. Founded in 1963, Eur ...

developed a specification to complement the regulation. The use of the specifications facilitates the demonstration of conformity to the essential requirements and regulatory provisions.

Implementations

In order to facilitate the transition from legacy protocols to this new standard EUROCONTROL launched a project called ECG (European or EATM Communications Gateway) to develop a gateway between

AFTN The Aeronautical Fixed Telecommunications Network (AFTN) is a worldwide system of aeronautical fixed circuits provided, as part of the Aeronautical Fixed Service, for the exchange of messages and/or digital data between aeronautical fixed stations ...

and AMHS. The ECG was developed by the French manufacturer

THALES Thales of Miletus ( ; ; ) was an Ancient Greek philosophy, Ancient Greek Pre-Socratic philosophy, pre-Socratic Philosophy, philosopher from Miletus in Ionia, Asia Minor. Thales was one of the Seven Sages of Greece, Seven Sages, founding figure ...

and the

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

manufacturer FREQUENTIS COMSOFT. Meanwhile, nearly all AMHS systems in

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

are derived from the ECG (see table below). Similar solutions are offered by Indra Avitech GmbH (Germany), Intelcan (Canada), TELEFONICA (Spain), IDS AirNav (Italy, Canada), Copperchase Ltd (UK), Radiocom (USA) working together with Skysoft Servicios S.A. (Argentina) and FREQUENTIS (Austria). The first AMHS system was implemented b
Avitech GmbH
(Germany) as a pioneer solution and went into operational use in 1996 with 36 centers for the German Military (Bundeswehr) and the first AMHS connection in Europe is in operational use since February 2005 between the ANSPs of Germany and Spain. Second in Europe were Bosnia and Herzegovina with Austria in 2011. The first operational AMHS connection in the Middle East was established in 2009 between the United Arab Emirates (Abu Dhabi) and Oman. In the meantime Abu Dhabi has evolved as a nucleus for the introduction of AMHS in the Middle East, resulting in a coherent AMHS network of operational connection between UAE, Jordan, Egypt, Saudi Arabia, Oman and Qatar. Since 2010 Jordan, Egypt and Saudi Arabia form the first operational AMHS triangle. In 2012 the South American countries Peru and Colombia joined the circle of AMHS users while Asia has operated AMHS links between Hong Kong and Macao since 2009 and between Singapore and India since 2011. Interregional AMHS connections for improved traffic between ICAO regions could be established between the UK and the US in 2011 and the UK and Singapore in the beginning of 2012. By end 2011, ANSPs worldwide have replaced 14 operational international AFTN connections by an AMHS link. The up-to-date worldwide implementation status of AMHS is recorded in the ICAO COM Charts which are available from the AMC (ATS Messaging Management Centre) operated by EUROCONTROL.

AMHS usage around the world

References

{{reflist

External links

Eurocontrol Sub-Domain on ATS Message Handling System (AMHS)

AMHS User Group

AMHS naming

Routing Policy for AMHS in Asia/Pacific region

ICAO Aeronautical Communications Panel

Alternative Solution to ECG

Hipaa Messaging
Aviation communications Email