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CAO.B.055 Continuing oversight

Annex Vd (Part-CAO) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IRImplementing rule

CAO.B.055Continuing oversight

(a)The competent authority shall establish and keep up-to-date, an oversight programme, specifying all CAOs to which it has issued a certificate and the dates at which it has audited and is scheduled to audit those CAOs.

(b)The competent authority shall audit at periods not exceeding 24 months each CAO to which it has issued an approval. Those audits shall concentrate, in particular, on the changes to the organisation notified to it in accordance with the procedure specified in point (b) of point CAO.A.105.

(c)A relevant sample of the aircraft managed by the CAO, if the organisation is approved to do so, shall be surveyed at every 24-month period. The size of the sample shall be decided by the competent authority based on the result of prior audits and earlier product surveys.

(d)The competent authority shall confirm in writing any finding during those audits to the CAO.

(e)The competent authority shall record any findings during those audits, any actions required to close the findings and any recommendations issued.

(f)The competent authority shall convey a meeting with the accountable manager of the CAO at least once every 24 months.

IR · CAO.B.055 — Regulation (EU) No 1321/2014 · Regulation (EU) 2019/1383 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC1 CAO.B.055Continuing oversight

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At the successful conclusion of the audit(s), including verification of the CAE, an audit report form should be completed by the auditing surveyor including all recorded findings, closure actions and the recommendation. An EASA Form 613 should be used for this activity (see Appendix I to AMC CAO.B.045(c) and CAO.B.055(b)). A review of EASA Form 613 audit report form should be carried out by a competent independent person nominated by the competent authority. Satisfactory review of the audit form should be indicated by a signature on the audit form.

AMC · AMC1 CAO.B.055 — Regulation (EU) No 1321/2014 · ED Decision 2020/002/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC2 CAO.B.055Continuing oversight

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SUBCONTRACTED ACTIVITIES

(a)If a CAO subcontracts continuing airworthiness management tasks, all subcontracted organisations should also be audited by the competent authority at periods not exceeding 24 months to ensure that the subcontracted continuing airworthiness management tasks are carried out in compliance with Part-CAO, Part-M and Part-ML, as applicable.

(b)If a CAO subcontracts specialised maintenance tasks, the competent authority should determine whether the subcontracted organisation needs to be audited and included in the oversight programme, taking into account the specific nature and complexity of the subcontracted activities and the results of previous oversight activities of the CAO. Consideration may also be given to subcontracted organisation holding an organisation approval or a certification to an industry standard.

(c)For these audits, the competent authority inspector should ensure that he or she is accompanied throughout the audit by a senior technical member of the CAO. NOTE: When a CAO subcontracts tasks, the competent authority should also ensure that the CAO has sufficient control over the subcontracted organisation.

AMC · AMC2 CAO.B.055 — Regulation (EU) No 1321/2014 · ED Decision 2020/002/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

All rules in SECTION B — AUTHORITY REQUIREMENTS

Consolidated from the EASA Easy Access Rules (revision 2 Sep 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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