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21.A.432C Application for a repair design approval

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

IRImplementing rule

21.A.432CApplication for a repair design approval

(a)An application for a repair design approval shall be made in a form and manner established by the Agency.

(b)An application for a major repair design approval shall include, or be supplemented after the initial application by, a certification programme containing:

1.a description of the damage and repair design identifying the configuration of the type design upon which the repair is made;

2.the identification of all areas of the type design and the approved manuals that are changed or affected by the repair design;

3.the identification of any reinvestigations necessary to demonstrate compliance of the repair design and areas affected by the repair design with the type-certification basis and the applicable environmental protection requirements incorporated by reference in, as applicable, either the type certificate, the supplemental type certificate or the APU ETSO authorisation;

4.any proposed amendments to the type-certification basis incorporated by reference in, as applicable, either the type-certificate, the supplemental type-certificate or the APU ETSO authorisation;

5.a proposal for a breakdown of the certification programme into meaningful groups of compliance demonstration activities and data, including the means and process proposed to be followed to demonstrate compliance with point 21.A.433(a)(1) and references to related compliance documents;

6.a proposal for the assessment of the meaningful groups of compliance demonstration activities and data, addressing the likelihood of an unidentified non-compliance with the type-certification basis or the applicable environmental protection requirements and the potential impact of that non-compliance on the product, UAS or CMU safety or environmental compatibility. The proposed assessment shall take into account at least the elements set out in point 21.B.100(a), points 1 to 4. Based on that assessment, the application shall include a proposal for the Agency’s involvement in the verification of the compliance demonstration activities and data; and

7.the specification whether the certification data is prepared completely by the applicant or on the basis of an arrangement with the owner of the type-certification data.

IR · 21.A.432C — Regulation (EU) No 748/2012 · Regulation (EU) 2025/1065 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC 21.A.432C(a)Form and manner

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The applicant should file an application using the web-based ‘EASA Applicant Portal’ or the application forms for the approval of major changes/major repair designs (FO.CERT.00031) or for the approval of minor changes/minor repair designs (FO.CERT.00032), which may be downloaded from the EASA website. The forms should be completed in accordance with the instructions embedded at the bottom of the application forms, and sent to EASA by fax, email or regular mail following the information provided on the EASA website.

AMC · AMC 21.A.432C(a) — Regulation (EU) No 748/2012 · ED Decision 2019/018/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC 21.A.432C(b)Certification programme for a repair design approval

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Clarification of 21.A.432C(b)(1): the description of the repair should consist of: the pre- and post-repair configuration; a drawing or outline of the repair; a list of the detailed features; a description of the type and extent of the inspection; and an outline of the damage. Clarification of 21.A.432C(b)(3): the identification of reinvestigations does not refer to the demonstration of compliance itself, but to the list of the affected certification specifications (CSs) and applicable environmental protection requirements, together with the means of compliance.

AMC · AMC 21.A.432C(b) — Regulation (EU) No 748/2012 · ED Decision 2025/016/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

All rules in SECTION A — TECHNICAL REQUIREMENTS

Consolidated from the EASA Easy Access Rules (revision 27 Nov 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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