---
title: "21L.A.27 Requirements for the issuance of a type certificate — Annex Ib, Initial Airworthiness · Avioverse"
description: "In order to be issued with a type certificate, the applicant shall:"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-a-technical-requirements/21l-a-27"
---

# 21L.A.27 Requirements for the issuance of a type certificate

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

IR Implementing rule

## 21L.A.27 Requirements for the issuance of a type certificate

In order to be issued with a type certificate, the applicant shall:

(a) demonstrate their design capability in accordance with point 21L.A.23;

(b) demonstrate the compliance of the design in accordance with point 21L.A.25;

(c) demonstrate, for aircraft type certificates, that the engine or propeller, or both, if installed on the aircraft, have either:

1\. a type certificate issued or determined in accordance with Annex I ([Part 21](https://avioverse.aero/glossary/easa/part-21)) or issued in accordance with this Annex; or

2\. been included within the application for the aircraft type certificate and the applicant has ensured the compliance of the engine and propeller during the compliance demonstration in point 21L.A.25;

(d) demonstrate that there are no unresolved issues from the physical inspection of the first [article](https://avioverse.aero/glossary/easa/article) of that product in the final configuration or any other investigation carried out by the Agency in accordance with points (c) and (d) of point 21L.B.46.

IR · 21L.A.27 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GM Guidance material

## GM1 21L.A.27(c)(1) Requirements for the issuance of a type certificate

CLARIFICATION OF THE TERM ‘DETERMINE’

A type certificate ‘determined’ in accordance with [Part 21 Light](https://avioverse.aero/glossary/easa/part-21-light) means a type certificate or a document that allows the issuance of a certificate of airworthiness issued before 28 September 2003 by a Member State that complies with [Article](https://avioverse.aero/glossary/easa/article) 3(1)(a) of Regulation (EU) No 748/2012.

GM · GM1 21L.A.27(c)(1) — Regulation (EU) No 748/2012 · ED Decision 2023/013/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMC Acceptable means of compliance

## AMC1 21L.A.27(d) Requirements for the issuance of a type certificate

DEMONSTRATION OF NO UNRESOLVED ISSUES

After the physical inspection and investigation carried out by EASA in accordance with points 21L.A.46(c) and (d), and upon notification from EASA in accordance with point 21L.B.46(d), the applicant should carry out the necessary actions, such as:

— redesign,

— retesting,

— additional compliance-demonstration activities,

— corrections and updates to compliance-demonstration documents to ensure that no unresolved issues remain.

When any findings from the first-[article](https://avioverse.aero/glossary/easa/article) inspection are resolved by the applicant to the satisfaction of EASA or no findings are raised by EASA or the competent authority, then point 21L.A.27(d) will be considered met.

AMC · AMC1 21L.A.27(d) — Regulation (EU) No 748/2012 · ED Decision 2023/013/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-ib/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.