ICAO 9925 AMD 1 PDF

FOREWORD

Satellite technology has a unique potential to satisfy many present and future communication, navigation and surveillance (CNS) needs. A key part of system improvement in the future is the introduction of air-ground digital communication services which could provide substantial benefits in air traffic services (ATS) efficiency and capacity, satisfying the needs of air traffic safety as well. Important system considerations include: worldwide interoperability; access by all classes of aeronautical users; the need to accommodate evolutionary system growth in terms of functional capability and capacity in an adaptive manner, considering different requirements in different areas; and the potential for taking advantage of satellite service capability from different service providers.

The Aeronautical Communications Panel (ACP) of the Air Navigation Commission has carried forward future air navigation systems planning that designated basic architectural concepts for using satellite communications, initially in oceanic and remote environments, and eventually in continental airspace. Progress in the development of satellite communications for aeronautical safety is made through the revision of Standards and Recommended Practices (SARPs) and guidance material by ICAO for the aeronautical mobile satellite (route) service (AMS(R)S) and through the interactions of ICAO with other international bodies to assure that resources are coordinated and available. Accepting to largely replace voice communications with the application of data links to support ATS requires assurance that all relevant elements of data link network(s) and subnetworks (such as a satellite subnetwork) are properly coordinated and interoperable. AMS(R)S is considered a global satellite subnetwork of the aeronautical telecommunication network (ATN) that provides end-to-end voice and data connectivity among end-users, such as air traffic controllers, pilots and aircraft operators. Interoperability with the ATN is assured by means of a standardized architecture for all elements of the ATN, based on ICAO SARPs and guidance material.

The objective of this manual is to provide an overview of systems operating in the AMS(R)S and offer guidance on the consideration of satellite networks as a platform for AMS(R)S communications for the safety and regularity of flight. The AMS(R)S serves the safety, regularity and efficiency of flight by providing communications between the aircraft earth stations (AES) (on-board an aircraft) and ground earth stations (GES) through a satellite link.

This manual is to be considered in conjunction with the ICAO SARPs as contained in Annex 10, Volume III, Part I, Chapter 4. This manual provides implementation guidance for specific satellite systems operating in the AMS(R)S.

The AMS(R)S manual is divided into the following parts:

Part I – General information on AMS(R)S

Part I contains a general description of aeronautical mobile satellite communications including information on applications, user requirements, potential operational benefits, and information on standardization activities undertaken by ICAO and aviation industry bodies. Information on institutional guidelines related to AMS(R)S services, the SARPs and AMS(R)S spectrum availability is provided.

Part II – Iridium Satellite Network

Part II of the manual deals with aeronautical mobile satellite communications provided by the Iridium satellite network. Information is provided on the compliance with AMS(R)S SARPs and Iridium-specific performance parameters pertaining to minimum operation performance standards for avionics supporting next-generation satellite systems as specified in RTCA DO-262.

Part III – Inmarsat and MTSAT Classic Aero

Part III provides a technical overview and guidance material to ICAO Member States and the international civil aviation community on the “Classic Aero” aviation satellite system as operated globally by Inmarsat and regionally by the Japanese Civil Aviation Authority (JCAB) which provides AMS(R)S communications.

Part IV – Inmarsat SwiftBroadband (SBB)

Part IV deals with the SwiftBroadband Satellite (SBB) system operated by Inmarsat. A general overview is given and technical specifications are provided by reference. This is followed by a compliance matrix showing conformance with ICAO Standards and Recommended Practices (SARPs) and then general guidance on the use of the system, for ANSP and aircraft operators.

Comments on this manual would be appreciated from all parties involved in the development and implementation of global navigation satellite services (GNSS). These comments should be addressed to:

The Secretary General International Civil Aviation Organization 999 Robert-Bourassa Boulevard Montréal, Quebec H3C 5H7 Canada