# 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 Secretary of State must endeavour to ensure that:

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

(a)the ATFM function is available to parties concerned 24 hours a day and that the local ATFM unit, on an exclusive basis, covers a designated area in respect of the airspace under their responsibility within the geographical area where ATFM measures are applied;
(b)in order to ensure efficient airspace planning allocation and efficient use, as well as direct links between airspace management and ATFM, consistent procedures are established for the cooperation between the parties involved in the ATFM function, ATS units and entities involved in airspace management;
(c)common procedures for requesting exemption from an ATFM departure slot are in accordance with the ICAO provisions referred to in the Appendix. Those procedures shall be coordinated ... through the unit providing central ATFM and published in national aeronautical information publications.

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