ICAO Document 8585. Designators For Aircraft Operating Agencies, Aeronautical Authorities and Services

The ICAO Doc 8585 Designators (Designators for Aircraft Operating Agencies, Aeronautical Authorities and Services) is an essential tool for Air Traffic Control (ATC) worldwide. This publication provides the internationally recognized three-letter codes used for aircraft identification and telecommunication services, as well as the telephony designators for operating agencies. It is a vital document for any pilot or controller to maintain precise and secure communication within the global air navigation environment.

The structure of this 215th Edition, January 2026, is divided into four fundamental parts. Parts 1, 2, and 3 consist of encode and decode tables linking operating agencies and aeronautical authorities with their assigned designators. Meanwhile, Part 4 includes an updated directory listing the addresses of government civil aviation authorities. For a flight crew member or dispatch personnel, accessing this information ensures that aircraft identification strictly complies with aviation industry standards.

Maintaining updated documentation is a critical responsibility to ensure interoperability in air transport. You can acquire this manual and explore other regulatory texts in our specialized ICAO documents section. This volume ensures that all operating entities are recognizable under a unified technical language in global aeronautics.

ICAO DOC 8585 DESIGNATORS FEATURES

• ✈️ ATC Identification: Three-letter designators for use on international telecommunication services.
• 📞 Aeronautical Telephony: Includes telephony designators for aircraft operating agencies and authorities.
• 📘 Updated Edition: 215th Edition, published in January 2026 according to ICAO standards.
• 🗺️ Global Directory: Part 4 dedicated to the addresses of government civil aviation authorities.
• 📊 Comprehensive Coding: Cross-tables for encoding and decoding agencies and services.

FREQUENTLY ASKED QUESTIONS (FAQS)

How often is this manual updated?

The ICAO Doc 8585 Designators manual is updated periodically to reflect changes in operating agencies; this is the latest version corresponding to the 215th Edition of 2026.

Is it necessary for Air Traffic Control personnel?

Yes, it is the official source that allows ATC personnel to correctly identify the agencies and services operating aircraft within international airspace.

Does it include information on government authorities?

Correct, Part 4 of the manual contains the complete list of addresses for the civil aviation authorities of Member States.