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ATM/ANS.AR.C.025A Changes to the information security management system

REQUIREMENTS FOR COMPETENT AUTHORITIES — OVERSIGHT OF SERVICES AND OTHER ATM NETWORK FUNCTIONS · Regulation (EU) 2017/373 · EAR revision 12 Mar 2025

IRImplementing rule

ATM/ANS.AR.C.025AChanges to the information security management system

(a)(a) For changes managed and notified to the competent authority in accordance with the procedure set out in point IS.I.OR.255(a) of Annex II (Part-IS.I.OR) to Implementing Regulation (EU) 2023/203, the competent authority shall include the review of such changes in its continuing oversight in accordance with the principles laid down in point ATM/ANS.AR.C.010. If any non-compliance is found, the competent authority shall notify the organisation thereof, request further changes and act in accordance with point ATM/ANS.AR.C.050.

(b)With regard to other changes requiring an application for approval in accordance with point IS.I.OR.255(b) of Annex II (Part-IS.I.OR) to Implementing Regulation (EU) 2023/203:

(1)upon receiving the application for the change, the competent authority shall check the organisation’s compliance with the applicable requirements before issuing the approval;

(2)the competent authority shall establish the conditions under which the organisation may operate during the implementation of the change;

(3)if it is satisfied that the organisation complies with the applicable requirements, the competent authority shall approve the change. [applicable from 22 February 2026 - Regulation (EU) 2023/203]

IR · ATM/ANS.AR.C.025A — Regulation (EU) 2017/373 · Regulation (EU) 2023/203 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025

All rules in SUBPART C — OVERSIGHT, CERTIFICATION AND ENFORCEMENT (ATM/ANS.AR.C)

Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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