Part C — Requirements for the provision of data

Transponder Code:

1. Applications submitted for new or amended allocations of SSR transponder codes shall be compatible with the format and data conventions, completeness, accuracy, timeliness, and justification requirements of the process laid down in point 4 of Part A of Annex IV to Commission Implementing Regulation (EU) 2019/123 as that Regulation has effect in EU law as amended from time to time.

2. The CAA must provide the Network Manager with the following data and information within agreed timescales to support the provision of the network function for SSR transponder codes:

(a) an up-to-date record of the allocation and use of all SSR transponder codes within their area of responsibility, subject to any security constraints concerning full disclosure of specific military code allocations not used for general air traffic;

(b) justification to demonstrate that existing and requested allocations of SSR transponder codes are the minimum necessary to meet operational requirements;

(c) details of any allocations of SSR transponder codes that are no longer operationally required and that can be released for re-allocation within the network;

(d) reports of any actual unplanned shortfall in SSR transponder code allocations;

(e) details of any change in the installation planning or in the operational status of systems or constituents that may impact on the assignment of SSR transponder codes to flights.

3. Air navigation service providers shall provide the Network Manager with the following data and information within agreed timescales to support the provision of the network function for SSR transponder codes:

(a) Enhanced Tactical Flow Management System’s Correlated Position Reports containing SSR transponder code assignments for general air traffic conducting flights under instrument flight rules;

(b) reports of any actual unplanned conflict or hazard caused by an actual operational SSR transponder code assignment, including information of how the conflict was resolved.

4. Responses by the CAA and air navigation service providers to the coordination of proposed amendments to SSR code transponder allocations and updates of the SSR transponder code allocation list shall as a minimum:

(a) identify whether or not any conflict or hazard between SSR transponder code allocations is foreseen;

(b) confirm whether or not operational requirements or efficiency will be adversely affected;

(c) confirm that amendments to SSR transponder code allocations can be implemented in accordance with required timescales.

Mode S Interrogator Code:

5. Applications submitted for new or amended allocations of interrogator code shall comply with the format and data conventions, completeness, accuracy, timeliness, and justification requirements of the process laid down in point 17 of Part A.

6. The CAA must provide the Network Manager with the following data and information within agreed timescales to support the provision of the interrogator code allocation service:

(a) characteristics of Mode S interrogators as specified in Regulation (EC) No 262/2009;

(b) details of any change in the installation planning or in the operational status of Mode S interrogators or constituents that may impact on the allocation of interrogator codes to Mode S interrogators.

(c) justification to demonstrate that existing and requested allocations of interrogator codes are the minimum necessary to meet operational requirements;

(d) allocations of interrogator code that are no longer operationally required and that can be released for re-allocation within the network;

(e) reports of any actual unplanned shortfall in interrogator code allocations.

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