---
title: "M.B.105 Mutual exchange of information — Part-M · Avioverse"
description: "In order to contribute to the improvement of air safety, the competent authorities shall participate in a mutual exchange of all necessary information in…"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-m/section-b-procedure-for-competent-authorities/m-b-105"
---

# M.B.105 Mutual exchange of information

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

IR Implementing rule

## M.B.105 Mutual exchange of information

(a) In order to contribute to the improvement of air safety, the competent authorities shall participate in a mutual exchange of all necessary information in accordance with Article 72 of Regulation (EU) 2018/1139.

(b) Without prejudice to the competencies of the Member States, in the case of a potential safety threat involving several Member States, the concerned competent authorities shall assist each other in carrying out the necessary oversight action.

IR · M.B.105 — Regulation (EU) No 1321/2014 · Regulation (EU) 2020/270 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMC Acceptable means of compliance

## AMC1 M.B.105(a) Mutual exchange of information

One typical case where in which the mutual exchange of information is necessary is when an [aircraft](https://avioverse.aero/glossary/easa/aircraft) is transferred inside the EU in accordance with point according to M.A.905. When notified of such a transfer, a competent authority should inform the competent authority where the aircraft will be registered of any known problems with the aircraft being transferred. Furthermore, the competent authority where the aircraft will be registered should ensure that the former competent authority has been properly notified that the aircraft is being transferred.

AMC · AMC1 M.B.105(a) — Regulation (EU) No 1321/2014 · ED Decision 2026/005/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in SECTION B — PROCEDURE FOR COMPETENT AUTHORITIES](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-m/section-b-procedure-for-competent-authorities)

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.