ATS.OR.446 Surveillance data

• Regulation (EU) 2023/1771 found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

ATS.OR.446 Surveillance data Regulation (EU) 2023/1771 (a) Air traffic services providers shall not use data from Mode S interrogators that operate under the responsibility of a third country if the allocation of the interrogator code has not been coordinated. (b) Air traffic services providers shall ensure that the necessary capabilities are implemented to allow air traffic controllers to establish individual aircraft identification using the downlinked aircraft identification feature, as detailed in [Appendix 1](#_DxCrossRefBm647742492). (c) Air traffic service providers shall ensure seamless operations within the airspace under their responsibility and at the boundary with adjacent airspaces by applying appropriate minimum requirements for the separation of aircraft.