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21L.A.84 Application for a supplemental type certificate

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

IRImplementing rule

21L.A.84Application 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:

1.include in the application the information required by point 21L.A.65(b;)

2.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.

IR · 21L.A.84 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21L.A.84(a)Application for a supplemental type certificate

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FORM AND MANNER The applicant should file an application using the web-based ‘EASA Applicant Portal’ or the application form for a supplemental type certificate (STC), 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 email or regular mail following the information provided on the EASA website.

AMC · AMC1 21L.A.84(a) — Regulation (EU) No 748/2012 · ED Decision 2023/013/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

AMCAcceptable means of compliance

AMC1 21L.A.84(b)(1)Application for a supplemental type certificate

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CERTIFICATION BASIS Point 21L.A.65(b) ‘a proposal for the type-certification basis and the applicable environmental protection requirements, prepared in accordance with the requirements and options specified in point 21L.B.101’. The proposed type-certification basis should include applicable certification specifications, proposed special conditions, proposed equivalent safety findings, as well as a proposed ‘elect to comply’ and proposed deviations, as applicable.

AMC · AMC1 21L.A.84(b)(1) — 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

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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