# Commission Implementing Regulation (EU) 2019/123 of 24 January 2019 laying down detailed rules for the implementation of air traffic management (ATM) network functions and repealing Commission Regulation (EU) No 677/2011 (Text with EEA relevance), Division 1: The ... operational stakeholders shall plan and execute the tasks supporting the ATFM function for:

Extent: E+W+S+N.I.

(a)all phases of all flights intended to operate or operating as general air traffic and in accordance with the Instrument Flight Rules (IFR) in whole or in part;
(b)all phases of flights referred to in point (a) and air traffic management.

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Source: https://www.legislation.gov.uk/eur/2019/123/annex/II/part/B/division/1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-123/annex-II/part-B/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.