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  • Report Misconduct
  • Contact ICAO
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  • ICAO Assembly (193 States)
  • Sessions of the Assembly
  • Resolutions in Force
  • ICAO Council (36 States)
  • President of the Council
  • Sessions of the Council
  • Council State Representatives
  • Air Navigation Commission
ICAO Secretariat
  • Secretary General
  • Air Navigation Bureau
  • Air Transport Bureau
  • Capacity Development and Implementation Bureau
  • Legal Affairs and External Relations Bureau
  • Administration Bureau
  • Regional Offices
  • Global Aviation Training
Global Priorities
Strategic Objectives
  • Aviation Safety
  • Air Navigation Capacity and Efficiency
  • Security and Facilitation
  • Economic Development
  • Environmental Protection
Global Objectives
  • Procurement
  • Capacity Development and Implementation
  • Next Generation Aviation Professionals
  • ICAO Training
  • CORSIA initiative
  • COVID-19
Key Initiatives
  • Innovation in Aviation
  • Aviation Development and ICAO World Aviation Forum
  • Humanitarian Assistance and Disaster Response in Aviation
  • Pandemic Response Coordination
  • Gender Equality and ICAO
  • State Action Plans for Aviation CO
Events
  • ICAO Global Implementation Support Symposium 2025
  • First ICAO Global Air Cargo Summit
  • Host your event at ICAO
  • ICAO Facilitation Conference 2025 (FALC 2025)
  • Assembly 42nd Session
  • View the Full List of Coming and Past meetings and Events
Resources
  • ICAO E-Library
  • Publications
  • Annual Reports of the Council
  • Safety Audit Results - Interactive
  • Aviation Benefits Report
  • Economic Facts and Figures
  • Global Aviation Safety Plan
  • Safety Reports
  • Global Air Navigation Plan
  • Air Navigation Reports
  • ICAO Partnership Programme
  • ICAO API Data Service
  • ICAO Data+
  • ICAO iSTARS
  • Air Transport Monthly Monitor
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  • Economic Analyses and Forecasting
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Legal Affairs and External Relations Bureau

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​Legal functions

The Bureau provides advice and assistance to the Secretary General and through him to Council and other  bodies of the Organization and to ICAO Member States on constitutional, administrative and procedural matters, on problems of international law, air law, commercial law, labour law and related matters.  The Bureau also conducts research and studies in the field of private and public international air law, prepares documentation for, and serves as the Secretariat of  the Legal Committee: relevant bodies of the Assembly; and Diplomatic Conferences which adopt multilateral treaties on international air law.

 
The Bureau is responsible for the depositary functions of ICAO under several treaties, as well as the registration of agreements or arrangements pursuant to Articles 81 and 83 of the Chicago Convention.
 
The functions of the Legal Bureau also include cooperation and coordination in legal activities with the United Nations and other international organizations, including the implementation of ICAO’s Policy on Regional Cooperation involving Regional Organizations and regional civil aviation bodies.

External Relations functions

The Bureau is responsible for reviewing, advising on and coordinating ICAO's relations with member and non-member States, the Organizations of the United Nations Common System and with other international organizations.
 
The Bureau monitors activities of the international system which are of mutual interest to ICAO, the United Nations and other international organizations, directs attention to international affairs and political developments which may affect ICAO, and makes arrangements for the representation of the Organization at meetings of other organizations.
 
The Bureau also provides policy guidance and advice on matters relating to the privileges and immunities granted to the Organization, national representatives and staff of the Secretariat. It acts as the focal point for ICAO's relations with the Host States of the Organization's Headquarters and of the Regional Offices, and is responsible for arranging and supervising the ICAO Familiarization Course.
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