World Meteorological Organization

ICAO has  published the 21st edition of Annex 3, Meteorological Service for International Air Navigation, which incorporates Amendment 82, and the new (first) edition of the Procedures for Air Navigation Services - Meteorology (PANS-MET) (Doc 10157), which will both be applicable on 27 November 2025 . 

These ICAO publications are available on ICAO-NET (secure access) and on the ICAO Store (public access)*. 

* At time of writing, only Annex 3 is on the ICAO Store. 

• Annex 3 (21st edition): ICAO-NET (secure) | ICAO Store (public)
• PANS-MET (1st edition): ICAO-NET (secure) | ICAO Store (public) [awaiting] 

These publications are a milestone achievement for ICAO and the broader aeronautical meteorological community. The ‘splitting’ of Annex 3 and the re-introduction of a PANS-MET represents a major reform of ICAO's regulatory framework in aeronautical meteorology and paves the way for the continued, progressive introduction of aeronautical meteorological information services in support of global air traffic management through system-wide information management. 

If you/your agency do not have direct access to Annex 3 and PANS-MET on ICAO-NET, or if you/your agency is not willing to purchase copies on the ICAO Store, please contact your national civil aviation authority and/or meteorological authority. 

Since Annex 3 and PANS-MET are revenue-generating publications, ICAO imposes necessary licence controls on their access, distribution and use. WMO to unable to supply copies of these and other ICAO publications to Members and their service providers. 

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