---
title: "21L.B.84 Issuance of an approval of a major change to a type certificate — Annex Ib, Initial Airworthiness · Avioverse"
description: "The Agency shall approve the major change when: the applicant has demonstrated that the change and the areas affected by the change comply with the…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-b-procedures-for-competent-authorities/21l-b-84"
---

# 21L.B.84 Issuance of an approval of a major change to a type certificate

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

IR Implementing rule

## 21L.B.84 Issuance of an approval of a major change to a type certificate

(a) The Agency shall approve the major change when:

1\. the applicant has demonstrated that the change and the areas affected by the change comply with the type-certification basis and the applicable environmental protection requirements, as established and designated by the Agency in accordance with point 21L.B.81;

2\. the applicant has demonstrated and declared compliance in accordance with point (f) of point 21L.A.66;

3\. the Agency through its verification of the demonstration of compliance has not found:

(i) any non-compliances with the type-certification basis or, where applicable, with the applicable environmental protection requirements;

(ii) any feature or characteristic of the change that may make the changed product unsafe or environmentally incompatible for the uses for which certification is requested.

(b) An approval of a major change to a type certificate shall be limited to the specific configuration(s) in the type certificate to which the change relates.

IR · 21L.B.84 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · 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-ib/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.