# 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 12: The national frequency manager shall register each frequency assignment in the central register by including the following information:

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

(a)data as specified in the ICAO European Frequency Management Manual including relevant associated technical and operational data;
(b)enhanced data requirements as referred to in point 6;
(c)a description of the operational use of the frequency assignment;
(d)the contact details of the operational stakeholder making use of the assignment.
The CAA shall make use of the central register to fulfil the United Kingdom's administrative frequency assignment registration obligations towards ICAO.
In this Annex “the central register” means the register developed and maintained by the Network Manager under Article 1(e) of Commission Implementing Regulation (EU) 2019/123 as that Regulation has effect in EU law as amended from time to time.

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Source: https://www.legislation.gov.uk/eur/2019/123/annex/III/part/B/division/12 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-123/annex-III/part-B/division-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.