# 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 14

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

The national frequency manager shall ensure that any required frequency shift, modification or termination is performed by the individual or organisation assigned with the frequency concerned within the agreed timeframe and that the central register is updated accordingly. The national frequency manager shall forward appropriate justification to the Network Manager when those actions cannot be performed.

---
Source: https://www.legislation.gov.uk/eur/2019/123/annex/III/part/B/division/14 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-123/annex-III/part-B/division-14
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.