--- title: "ATM/ANS.AR.C.001 – ATM/ANS.AR.C.050: SUBPART C — OVERSIGHT, CERTIFICATION AND ENFORCEMENT (ATM/ANS.AR.C) (REQUIREMENTS FOR COMPETENT AUTHORITIES — OVERSIGHT OF SERVICES AND OTHER ATM NETWORK FUNCTIONS, ATM/ANS) — rule index · Avioverse" description: "ATM/ANS.AR.C.001 – ATM/ANS.AR.C.050, Regulation (EU) 2017/373. The competent authorities shall regularly monitor and assess the safety performance of the…" url: "https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c" --- # SUBPART C — OVERSIGHT, CERTIFICATION AND ENFORCEMENT (ATM/ANS.AR.C) REQUIREMENTS FOR COMPETENT AUTHORITIES — OVERSIGHT OF SERVICES AND OTHER ATM NETWORK FUNCTIONS · Air Traffic Management / Air Navigation Services · Regulation (EU) 2017/373 · ATM/ANS.AR.C.001 – ATM/ANS.AR.C.050 On this page 1. ## [ATM/ANS.AR.C.001 Monitoring of safety performance](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-001) The competent authorities shall regularly monitor and assess the safety performance of the service providers under their oversight. 2. ## [ATM/ANS.AR.C.005 Certification, declaration, and verification of service providers' compliance with the requirements](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-005) Within the scope of point ATM/ANS.AR.B.001(a)(1), the competent authority shall establish a process in order to verify: [AMC1 ATM/ANS.AR.C.005(a)(4) Certification, declaration, and verification of service providers’ compliance with the requirements](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-005#amc1-atm-ans-ar-c-005-a-4) 3. ## [ATM/ANS.AR.C.010 Oversight](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-010) The competent authority, or qualified entities acting on its behalf, shall conduct audits, in accordance with Article 5. [GM1 ATM/ANS.AR.C.010 Oversight](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-010#gm1-atm-ans-ar-c-010) [AMC1 ATM/ANS.AR.C.010(a) Oversight](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-010#amc1-atm-ans-ar-c-010-a) [GM1 ATM/ANS.AR.C.010(b)(1) Oversight](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-010#gm1-atm-ans-ar-c-010-b-1) 4. ## [ATM/ANS.AR.C.015 Oversight programme](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-015) The competent authority shall establish and update annually an oversight programme taking into account the specific nature of the service providers, the… [AMC1 ATM/ANS.AR.C.015 Oversight programme](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-015#amc1-atm-ans-ar-c-015) [AMC1 ATM/ANS.AR.C.015(a) Oversight programme](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-015#amc1-atm-ans-ar-c-015-a) [AMC1 ATM/ANS.AR.C.015(a)(1) Oversight programme](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-015#amc1-atm-ans-ar-c-015-a-1) 5. ## [ATM/ANS.AR.C.020 Issue of certificates](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-020) Following the process laid down in point ATM/ANS.AR.C.005(a), upon receiving an application for the issuance of a certificate to a service provider, the… [GM1 ATM/ANS.AR.C.020(c) Issue of certificates](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-020#gm1-atm-ans-ar-c-020-c) [GM2 ATM/ANS.AR.C.020(c) Issue of certificates](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-020#gm2-atm-ans-ar-c-020-c) [GM3 ATM/ANS.AR.C.020(c) Issue of certificates](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-020#gm3-atm-ans-ar-c-020-c) 6. ## [ATM/ANS.AR.C.025 Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025) Upon receiving a notification for a change in accordance with point ATM/ANS.OR.A.045, the competent authority shall comply with points ATM/ANS.AR.C.030… [AMC1 ATM/ANS.AR.C.025(b) Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025#amc1-atm-ans-ar-c-025-b) [AMC2 ATM/ANS.AR.C.025(b) Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025#amc2-atm-ans-ar-c-025-b) [GM1 ATM/ANS.AR.C.025(b) Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025#gm1-atm-ans-ar-c-025-b) [GM2 ATM/ANS.AR.C.025(b) Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025#gm2-atm-ans-ar-c-025-b) [AMC1 ATM/ANS.AR.C.025(c) Changes](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025#amc1-atm-ans-ar-c-025-c) 7. ## [ATM/ANS.AR.C.025A Changes to the information security management system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-025a) 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)… 8. ## [ATM/ANS.AR.C.030 Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030) The competent authority shall review: change management procedures for functional systems or any material modification to those procedures submitted by… [AMC1 ATM/ANS.AR.C.030 Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030#amc1-atm-ans-ar-c-030) [GM1 ATM/ANS.AR.C.030 Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030#gm1-atm-ans-ar-c-030) [AMC1 ATM/ANS.AR.C.030(a) Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030#amc1-atm-ans-ar-c-030-a) [AMC1 ATM/ANS.AR.C.030(b) Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030#amc1-atm-ans-ar-c-030-b) [GM1 ATM/ANS.AR.C.030(b) Approval of change management procedures for functional systems](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-030#gm1-atm-ans-ar-c-030-b) 9. ## [ATM/ANS.AR.C.035 Decision to review a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-035) Upon receipt of a notification in accordance with point ATM/ANS.OR.A.045(a)(1), or upon receipt of modified information in accordance with point… [AMC1 ATM/ANS.AR.C.035 Decision to review a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-035#amc1-atm-ans-ar-c-035) [AMC1 ATM/ANS.AR.C.035(a) Decision to review a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-035#amc1-atm-ans-ar-c-035-a) [GM1 ATM/ANS.AR.C.035(b) Decision to review a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-035#gm1-atm-ans-ar-c-035-b) [GM1 ATM/ANS.AR.C.035(c) Decision to review a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-035#gm1-atm-ans-ar-c-035-c) 10. ## [ATM/ANS.AR.C.040 Review of a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-040) When the competent authority reviews the argument for a notified change, it shall: [GM1 ATM/ANS.AR.C.040(b) Review of a notified change to the functional system](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-040#gm1-atm-ans-ar-c-040-b) 11. ## [ATM/ANS.AR.C.045 Declarations of flight information services providers](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-045) Upon receiving a declaration from a provider of flight information services intending to provide such services, the competent authority shall verify that… 12. ## [ATM/ANS.AR.C.050 Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050) The competent authority shall have a system to analyse findings for their safety significance and decide on enforcement measures on the basis of the… [GM1 ATM/ANS.AR.C.050 Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050#gm1-atm-ans-ar-c-050) [GM2 ATM/ANS.AR.C.050 Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050#gm2-atm-ans-ar-c-050) [AMC1 ATM/ANS.AR.C.050(e) Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050#amc1-atm-ans-ar-c-050-e) [GM1 ATM/ANS.AR.C.050(e) Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050#gm1-atm-ans-ar-c-050-e) [GM1 ATM/ANS.AR.C.050(f) Findings, corrective actions, and enforcement measures](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-c/atm-ans-ar-c-050#gm1-atm-ans-ar-c-050-f) Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, extracted 13 Oct 2026) for convenience. 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