# 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 7: The ATS units shall:

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

(a)coordinate ATFM measures, through the local ATFM unit(s), ... in order to ensure that the measures chosen aim at the optimisation of the overall performance of the UK ATMS;
(b)ensure that ATFM measures applied to airports are coordinated with the airport operator concerned, in order to ensure efficiency in airport planning and usage for the benefit of all concerned operational stakeholders;
(c)notify to the CAA, through the local ATFM unit, all events, including transition plans for the entry into service of major airspace or ATM systems improvements and adverse weather, that may impact air traffic control capacity or air traffic demand and proposed mitigation;
(d)provide the CAA and the local ATFM units with the following data and subsequent updates, as technically feasible, in a timely manner and ensuring its quality:
(i)airspace and route structures;
(ii)airspace and route availability including availability through application of flexible use of airspace in accordance with Regulation (EC) No 2150/2005;
(iii)ATS unit sector configurations and activations;
(iv)aerodrome taxi times and runway configurations;
(v)air traffic control sector, and aerodrome capacities including runways;
(vi)updated flight positions;
(vii)deviations from flight plans;
(viii)actual flight take-off times;
(ix)information on the operational availability of the Communication Navigation Surveillance (CNS)/ATM infrastructure.

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Source: https://www.legislation.gov.uk/eur/2019/123/annex/II/part/B/division/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-123/annex-II/part-B/division-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.