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21.A.113 Application for a supplemental type-certificate

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

IRImplementing rule

21.A.113Application for a supplemental type-certificate

(a)An application for a supplemental type-certificate shall be made in a form and manner established by the Agency.

(b)When applying for a supplemental type-certificate, the applicant shall:

(i)include in the application the information required by point 21.A.93(b);

(ii)specify whether the certification data has been or will be prepared completely by the applicant or on the basis of an arrangement with the owner of the type-certification data.

(c)Point 21.A.93(c) applies to the requirements for the time limits of the application effectivity as well as the requirements related to the need to update the type-certification basis, operational suitability data certification basis and environmental protection requirements, when the change has not been approved or it is evident that it will not be approved within the time limit established.

IR · 21.A.113 — Regulation (EU) No 748/2012 · Regulation (EU) 2019/897 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC 21.A.113(a)Form and manner

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The applicant should file an application using the web-based ‘EASA Applicant Portal’ or the application form for a supplemental type certificate (STC) (FO.CERT.00033), which may be downloaded from the EASA website. If the form is filled in offline, it should be completed in accordance with the instructions embedded at the bottom of the application form, and sent to EASA by fax, email or regular mail following the information provided on the EASA website.

AMC · AMC 21.A.113(a) — Regulation (EU) No 748/2012 · ED Decision 2019/018/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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