---
title: "21.B.140 Amendment of a letter of agreement — Annex I, Initial Airworthiness · Avioverse"
description: "The competent authority shall investigate, as appropriate, in accordance with point 21.B.120 any amendment of the letter of agreement."
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-b-procedures-for-competent-authorities/21-b-140"
---

# 21.B.140 Amendment of a letter of agreement

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

IR Implementing rule

## 21.B.140 Amendment of a letter of agreement

(a) The competent authority shall investigate, as appropriate, in accordance with point 21.B.120 any amendment of the letter of agreement.

(b) When the competent authority is satisfied that the requirements of Section A, Subpart F continue to be complied with, it shall amend the letter of agreement accordingly.

IR · 21.B.140 — Regulation (EU) No 748/2012 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMC Acceptable means of compliance

## AMC 21.B.140 Amendment of a letter of agreement

The competent authority must be satisfied that any change affecting a letter of agreement complies with the shows of Section A Subpart F before implementation can start. A plan for the change should be agreed with the applicant in accordance with AMC1 21.B.120(d). If the change affects the content of the letter of agreement, a new application should be filed, and an amended/revised letter of agreement should be obtained subsequently.

AMC · AMC 21.B.140 — Regulation (EU) No 748/2012 · ED Decision 2023/014/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

[All rules in SECTION B — PROCEDURES FOR COMPETENT AUTHORITIES](https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-b-procedures-for-competent-authorities)

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.