Part B — Requirements for the execution of the function

1. The CAA is the national frequency manager with the responsibility for ensuring that frequency assignments are made, modified and terminated in accordance with this Regulation.

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4. The national frequency manager shall report to the Network Manager, radio interference cases that impact the European aviation network.

5. The national frequency manager must assist the Network Manager to further develop and enhance frequency management procedures, planning criteria, data sets and processes to improve the use and occupancy of radio spectrum by general air traffic users.

6. When a frequency assignment is required, the individual or organisation applying for the use of a frequency shall file a request with the national frequency manager with all the relevant data and justification.

7. The national frequency manager must assist the Network Manager to assess and prioritise frequency requests on the basis of operational requirements and agreed criteria.

8. Where there is no impact on the network, the national frequency manager shall determine suitable frequency(ies) in reply to the frequency request taking into account the requirements of point 12 of Annex III to Commission Implementing Regulation (EU) 2019/123 as that Regulation has effect in EU law as amended from time to time.

10. When a suitable frequency as referred to in points 11 and 12 cannot be determined, the national frequency managers may request the Network Manager to undertake a specific frequency search.

11. The national frequency manager shall assign suitable frequency(ies) determined in points 12 or 13.

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

(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.

13. When assigning the frequency to the applicant, the national frequency manager shall include conditions of use. As a minimum, those conditions shall specify that the frequency assignment:

(a) remains valid as long as it is being used to meet the operational requirements described by the applicant;

(b) may be subject to a frequency shift request and that such shifts will need to be implemented within a limited timeframe;

(c) is subject to modification once the operational use described by the applicant changes.

14. 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.

15. The national frequency manager shall ensure that the information referred to in point 12 of Part B concerning all frequency assignments used in the European aviation network are available in the central register.

16. The national frequency manager shall perform monitoring and evaluations of aviation frequency bands and frequency assignments based on transparent procedures in order to ensure their correct and efficient use.