---
title: "21L.B.103 Issuance of a supplemental type certificate — Annex Ib, Initial Airworthiness · Avioverse"
description: "Upon receiving an application for a supplemental type certificate under this Annex, the Agency shall issue a supplemental type certificate when:"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-b-procedures-for-competent-authorities/21l-b-103"
---

# 21L.B.103 Issuance of a supplemental type certificate

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

IR Implementing rule

## 21L.B.103 Issuance of a supplemental type certificate

(a) Upon receiving an application for a supplemental type certificate under this Annex, the Agency shall issue a supplemental type certificate 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.101;

2\. the applicant has demonstrated and declared compliance in accordance with point (f) of point 21L.A.85;

3\. the owner of the type-certificate data, if the applicant has specified in accordance with point (b)(2) of 21L.A.84 that the certification data has been providedon the basis of an arrangement with the owner of the type-certificate data, has:

(i) no technical objection to the information submitted under point (a)(2) of point 21L.B.103; and

(ii) agreed to collaborate with the holder of the repair design approval to discharge all the obligations for the continued airworthiness of the product with the repair design through compliance with point 21L.A.88;

4\. 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, 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) A supplemental type certificate shall be limited to the specific configuration(s) in the type certificate to which the related major change relates.

IR · 21L.B.103 — 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.