---
title: "CAO.A.050 Components, equipment and tools — Part-CAO · Avioverse"
description: "The CAO shall: hold the equipment and tools specified in the maintenance data provided for in point CAO.A.055, or verified equivalents as listed in the…"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-cao/section-a-organisation-requirements/cao-a-050"
---

# CAO.A.050 Components, equipment and tools

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

IR Implementing rule

## CAO.A.050 Components, equipment and tools

(a) The CAO shall:

(1) hold the equipment and tools specified in the [maintenance](https://avioverse.aero/glossary/easa/maintenance) data provided for in point CAO.A.055, or verified equivalents as listed in the CAE, as necessary for day-to-day maintenance within the scope of the [organisation](https://avioverse.aero/glossary/easa/organisation)'s approval;

(2) have a procedure to ensure that it has access to all other equipment and tools necessary to carry out its work, used only on an occasional basis, where needed.

(b) The CAO shall ensure that the tools and equipment it uses are controlled and calibrated to an officially recognised standard. It shall keep records of such calibrations and the standards used and comply with point CAO.A.090.

(c) The CAO shall inspect, classify and appropriately segregate all incoming components in accordance with points M.A.501 and M.A.504 of Annex I (Part-M) or with points ML.A.501 and ML.A.504 of Annex Vb (Part-ML), as applicable.

IR · CAO.A.050 — Regulation (EU) No 1321/2014 · Regulation (EU) 2019/1383 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMC Acceptable means of compliance

## AMC1 CAO.A.050(a) Components, equipment and tools

(a) The tools ‘necessary for day-to-day [maintenance](https://avioverse.aero/glossary/easa/maintenance)’ refers to those needed to perform standard maintenance practices plus those needed in order to complete the normal servicing tasks as well as those needed up to the annual/100-hour or equivalent inspections and which are common to the majority of [aircraft](https://avioverse.aero/glossary/easa/aircraft) contained in the scope of approval.

(b) The availability of tools rarely used because the particular maintenance task is very rarely performed can be handled through a procedure in accordance with CAO.A.050(a)(2).

AMC · AMC1 CAO.A.050(a) — Regulation (EU) No 1321/2014 · ED Decision 2020/002/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in SECTION A — ORGANISATION REQUIREMENTS](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-cao/section-a-organisation-requirements)

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.