ICAO Document 9849 Global Navigation Satellite Systems (GNSS)

The ICAO Doc 9849 Manual (Manual on Global Navigation Satellite System) is primarily designed to provide States with the technical information necessary for the safe introduction of satellite-based operations. In today's aviation industry, this document offers a comprehensive overview of GNSS-based operations, describing the systems and providing guidance on service provision, including future evolution prospects for every international flight.

This 5th Edition 2025 integrates fundamental updates that every commander or infrastructure specialist must know. Key highlights include new material on dual-frequency, multiconstellation (DFMC) GNSS, alongside advanced protocols for monitoring, assessing, and reporting system performance. Furthermore, it technically addresses the detection and mitigation of radiofrequency interference, ensuring that air transport maintains the highest safety standards set in Annex 10, Volume I.

As a reference text for global aeronautics, this manual is indispensable for authorities, service providers, and any flight crew member interested in the foundations of satellite navigation. You can find this manual and other regulatory texts in our ICAO documents section, ensuring your technical library remains updated according to international organization requirements.

ICAO DOC 9849 MANUAL FEATURES

• 📘 Updated Edition: 5th Edition published in 2025 with revised technical content.
• 📡 DFMC Focus: Includes new guidelines on dual-frequency and multiconstellation systems.
• 🛡️ Operational Safety: Detailed guide on radiofrequency interference detection and mitigation.
• 📊 Performance: Methods for GNSS system performance monitoring, assessment, and reporting.
• 📑 Regulatory Reference: To be used in conjunction with Annex 10, Volume I provisions.

FREQUENTLY ASKED QUESTIONS (FAQS)

Does this manual replace the previous edition of Doc 9849?

Yes, this fifth edition of the ICAO Doc 9849 Manual updates and expands upon previous content, incorporating cutting-edge technologies like DFMC and new interference mitigation methods.

Who is the primary audience for this publication?

It is intended for Member States, air navigation service providers, and aeronautical professionals responsible for implementing or supervising satellite systems.

Is this document required for Annex 10 compliance?

This manual provides the practical and descriptive guidance necessary to correctly apply the binding technical provisions contained in ICAO Annex 10.