# 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 5: The ATFM function shall apply to the following parties, or agents acting on their behalf, involved in ATFM processes:

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

(a)aircraft operators;
(b)air traffic service (ATS) providers, including ATS units, ATS reporting offices and aerodrome control service units;
(c)aeronautical information services providers;
(d)entities involved in airspace management;
(e)airport operators;
(f)...
(g)local ATFM units as referred to in point 6 of Part A of this Annex;
(h)slot coordinators at coordinated airports.

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Source: https://www.legislation.gov.uk/eur/2019/123/annex/II/part/A/division/5 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-123/annex-II/part-A/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.