--- title: "ATM/ANS.AR.A.001 – ATM/ANS.AR.A.030: SUBPART A — GENERAL REQUIREMENTS (REQUIREMENTS FOR COMPETENT AUTHORITIES — OVERSIGHT OF SERVICES AND OTHER ATM NETWORK FUNCTIONS, ATM/ANS) — rule index · Avioverse" description: "ATM/ANS.AR.A.001 – ATM/ANS.AR.A.030, Regulation (EU) 2017/373. This Annex establishes the requirements for the administration and management systems of…" url: "https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a" --- # SUBPART A — GENERAL REQUIREMENTS 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.A.001 – ATM/ANS.AR.A.030 On this page 1. ## [ATM/ANS.AR.A.001 Scope](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-001) This Annex establishes the requirements for the administration and management systems of the competent authorities responsible for certification… 2. ## [ATM/ANS.AR.A.005 Certification, oversight and enforcement tasks](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-005) The competent authority shall exercise certification, oversight and enforcement tasks in respect of the application of the requirements applicable to… [AMC1 ATM/ANS.AR.A.005(b) Certification, oversight and enforcement tasks](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-005#amc1-atm-ans-ar-a-005-b) [GM1 ATM/ANS.AR.A.005(b) Certification, oversight and enforcement tasks](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-005#gm1-atm-ans-ar-a-005-b) [GM2 ATM/ANS.AR.A.005(b) Certification, oversight and enforcement tasks](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-005#gm2-atm-ans-ar-a-005-b) [GM1 ATM/ANS.AR.A.005(c) Certification, oversight and enforcement tasks](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-005#gm1-atm-ans-ar-a-005-c) 3. ## [ATM/ANS.AR.A.010 Certification, oversight and enforcement documentation](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-010) The competent authority shall make available the relevant legislative acts, standards, rules, technical publications and related documents to its… 4. ## [ATM/ANS.AR.A.015 Means of compliance](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-015) The Agency shall develop acceptable means of compliance (AMC) that may be used to establish compliance with the requirements of this Regulation. [GM1 ATM/ANS.AR.A.015 Means of compliance](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-015#gm1-atm-ans-ar-a-015) [AMC1 ATM/ANS.AR.A.015(d)(3) Means of compliance](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-015#amc1-atm-ans-ar-a-015-d-3) 5. ## [ATM/ANS.AR.A.020 Information to the Agency](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-020) The competent authority shall without undue delay notify the Agency in case of any significant problems with the implementation of the relevant… [AMC1 ATM/ANS.AR.A.020(b) Information to the Agency](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-020#amc1-atm-ans-ar-a-020-b) [GM1 ATM/ANS.AR.A.020(b) Information to the Agency](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-020#gm1-atm-ans-ar-a-020-b) [GM2 ATM/ANS.AR.A.020(b) Information to the Agency](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-020#gm2-atm-ans-ar-a-020-b) [GM3 ATM/ANS.AR.A.020(b) Information to the Agency](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-020#gm3-atm-ans-ar-a-020-b) 6. ## [ATM/ANS.AR.A.025 Immediate reaction to safety problem](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-025) Without prejudice to Regulation (EU) No 376/2014, the competent authority shall implement a system to appropriately collect, analyse, and disseminate… 7. ## [ATM/ANS.AR.A.025A Immediate reaction to an information security incident or vulnerability with an impact on aviation safety](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-025a) The competent authority shall implement a system to appropriately collect, analyse, and disseminate information related to information security incidents… [AMC1 ATM/ANS.AR.A.025A Immediate reaction to an information security incident or vulnerability with an impact on aviation safety](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-025a#amc1-atm-ans-ar-a-025a) [GM1 ATM/ANS.AR.A.025A Immediate reaction to an information security incident or vulnerability with an impact on aviation safety](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-025a#gm1-atm-ans-ar-a-025a) 8. ## [ATM/ANS.AR.A.030 Safety directives](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-030) The competent authority shall issue a safety directive when it has determined the existence of any of the following: [GM1 ATM/ANS.AR.A.030 Safety directives](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-030#gm1-atm-ans-ar-a-030) [GM2 ATM/ANS.AR.A.030(b) Safety directives](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-030#gm2-atm-ans-ar-a-030-b) [GM3 ATM/ANS.AR.A.030(c) Safety directives](https://avioverse.aero/regulations/easa/atm-ans/requirements-for-competent-authorities-oversight/subpart-a/atm-ans-ar-a-030#gm3-atm-ans-ar-a-030-c) Consolidated from the EASA Easy Access Rules (revision 12 Mar 2025, extracted 13 Oct 2026) for convenience. 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