Skip to main content
  • English
  • Français
  • 中文
User account menu
  • Log in
Home
International Civil Aviation Organization
ICAO store
User account menu
  • Log in
Seach MENU
About ICAO

About ICAO

  • Overview
  • Strategic Plan 2026-2050
  • Latest News and Highlights
  • FAQs
  • List - ICAO Member States
  • ICAO Museum
  • ICAO Carbon Calculator
  • Report Misconduct
  • Contact ICAO

Diplomatic Bodies

  • 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 Priorities

Strategic goals

  • Every Flight is Safe and Secure
  • Aviation is Environmentally Sustainable
  • • CORSIA
  • • State Action Plans for Aviation CO2 Reduction
  • • Finvest Hub
  • Seamless, Accessible, and Reliable Mobility
  • No Country Left Behind
  • • Capacity Development and Implementation Support
  • Comprehensive Legal Framework
  • Economic Development

Enablers

  • ICAO Continuous Improvement
  • Innovation in Aviation
  • Next Generation Aviation Professionals
  • Gender Equality
  • ICAO Global Ambassadors Programme
  • ICAO Training
  • Partnerships and Resource Mobilization
Events

Featured Events

  • 2026 ICAO Air Law Treaty Workshop Tanzania (Third Edition)
  • ICAO/AWG Joint Regional Workshop on Cross-Border Transferability of Aircraft (XBT) and Compliance with the Cape Town Convention (CTC)
  • ICAO Global Implementation Support Symposium 2026
  • Fourteenth Meeting of the Facilitation Panel (FALP/14)

Event Information

  • Host your Event at ICAO
  • View the full list of Coming and Past Meetings & Events
Resources

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
  • Compendium: Competition Policies/Practices
  • Economic Analyses and Forecasting
  • Databases and Studies
  • Environment Reports
  • Environment Publications
  • ICAO TRIP Strategy Compendium
  • Unmanned Aviation
  • ICAO GIS Aviation Data
Careers
Featured Articles
ICAO TV
Subscribe
About ICAO
About ICAO
  • Overview
  • Strategic Plan 2026-2050
  • Latest News and Highlights
  • FAQs
  • List - ICAO Member States
  • ICAO Museum
  • ICAO Carbon Calculator
  • Report Misconduct
  • Contact ICAO
Diplomatic Bodies
  • 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 Priorities
Strategic Goals
  • Every Flight is Safe and Secure
  • Aviation is Environmentally Sustainable
  • • CORSIA
  • • State Action Plans for Aviation CO2 Reduction
  • • Finvest Hub
  • Seamless, Accessible, and Reliable Mobility
  • No Country Left Behind
  • • Capacity Development and Implementation Support
  • Comprehensive Legal Framework
  • Economic Development
Enablers
  • ICAO Continuous Improvement
  • Innovation in Aviation
  • Next Generation Aviation Professionals
  • Gender Equality
  • ICAO Global Ambassadors Programme
  • ICAO Training
  • Partnerships and Resource Mobilization
Events
Featured Events
  • 2026 ICAO Air Law Treaty Workshop Tanzania (Third Edition)
  • ICAO/AWG Joint Regional Workshop on Cross-Border Transferability of Aircraft (XBT) and Compliance with the Cape Town Convention (CTC)
  • ICAO Global Implementation Support Symposium 2026
  • Fourteenth Meeting of the Facilitation Panel (FALP/14)
Event Information
  • Host your Event at ICAO
  • View the full list of Coming and Past Meetings & Events
Resources
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
  • Compendium: Competition Policies/Practices
  • Economic Analyses and Forecasting
  • Databases and Studies
  • Environment Reports
  • Environment Publications
  • ICAO TRIP Strategy Compendium
  • Unmanned Aviation
  • ICAO GIS Aviation Data
Careers
Featured Articles
ICAO TV
ICAO store
Subscribe
  • English
  • Français
  • 中文

Breadcrumb

  1. Homepage
  2. Publications
  3. Doc 9974
  • Annual Reports of the Council
  • 42nd Assembly Documentation
  • Assembly Archive
  • Doc Series
  • TRIP Strategy Compendium
  • TRIP Magazine
  • Air Navigation Reports
  • Safety Reports
  • ICAO Journal
  • Regional Reports
  • Training Report
  • ICAO States Today
  • Aircraft Type Designators (Doc 8643)
  • Products and Services Catalogue
  • Depository Libraries
  • Online Publications Samples
  • Marketing Opportunities
  • EAAC Report
  • Annex – Aviation 2026 - 2028

Doc Series

Doc 9974

Flight Safety and Volcanic Ash

Flight Safety and Volcanic Ash
EN
FR
SP
RU
AR
ZH
Learn more about ICAO
  • Contact ICAO
  • The United Nations
  • Terms & Conditions
  • External Resources
  • web [at] icao.int (Web Support)
  • FAQ
Connect with us :
  • linkedIn
  • Facebook
  • Unitingaviation
  • ICAO-TV
  • Instagram
  • Youtube

© 2025 International Civil Aviation Organization