---
title: "21.A.153 Changes to the terms of approval — Annex I, Initial Airworthiness · Avioverse"
description: "Each change to the terms of approval shall be approved by the competent authority."
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-a-technical-requirements/21-a-153"
---

# 21.A.153 Changes to the terms of approval

Annex I · Regulation (EU) No 748/2012 · EAR revision 27 Nov 2025

IR Implementing rule

## 21.A.153 Changes to the terms of approval

Each change to the terms of approval shall be approved by the competent authority. An application for a change to the terms of approval shall be made in a form and manner established by the competent authority. The applicant shall comply with the applicable requirements of this Subpart.

IR · 21.A.153 — Regulation (EU) No 748/2012 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMC Acceptable means of compliance

## AMC 21.A.153 Changes to the terms of approval — Application for a change to the terms of approval

EASA Form 51 (see AMC1 21.A.147) must be obtained from the competent authority and completed in accordance with the procedures of the production organisation exposition (POE).

The information entered on the form is the minimum required by the competent authority to assess the need for change of the production organisation approval.

The completed form and an outline of the changed POE, and details of the proposed change to POA terms of approval should be forwarded to the competent authority.

AMC · AMC 21.A.153 — Regulation (EU) No 748/2012 · ED Decision 2022/021/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

[All rules in SECTION A — TECHNICAL REQUIREMENTS](https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-a-technical-requirements)

Consolidated from the EASA Easy Access Rules (revision 27 Nov 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.