---
title: "CAO.1 General — Part-CAO · Avioverse"
description: "For the purpose of this Annex (Part-CAO): the competent authority shall be:"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-cao/general/cao-1"
---

# CAO.1 General

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

IR Implementing rule

## CAO.1 General

For the purpose of this Annex (Part-CAO):

(1) the competent authority shall be:

(a) for organisations having their [principal place of business](https://avioverse.aero/glossary/easa/principal-place-of-business) in a Member State, the authority designated by that Member State;

(b) for organisations having their principal place of business in a third country, the Agency.

(2) 'owner' means the person responsible for the [continuing airworthiness](https://avioverse.aero/glossary/easa/continuing-airworthiness) of the [aircraft](https://avioverse.aero/glossary/easa/aircraft), including the following persons:

(i) the registered owner of the aircraft;

(ii) the lessee in the case of a leasing contract;

(iii) the operator.

IR · CAO.1 — Regulation (EU) No 1321/2014 · Regulation (EU) 2019/1383 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in GENERAL](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-cao/general)

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.