---
title: "21L.B.201 Type-certification basis and applicable environmental protection requirements for a repair design approval — Annex Ib, Initial Airworthiness · Avioverse"
description: "The Agency shall designate any amendments to the type-certification basis and the applicable environmental requirements incorporated by reference in, as…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-b-procedures-for-competent-authorities/21l-b-201"
---

# 21L.B.201 Type-certification basis and applicable environmental protection requirements for a repair design approval

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

IR Implementing rule

## 21L.B.201 Type-certification basis and applicable environmental protection requirements for a repair design approval

The Agency shall designate any amendments to the type-certification basis and the applicable environmental requirements incorporated by reference in, as applicable, either the type certificate or the supplemental type certificate, which the Agency considers necessary for maintaining a level of safety and environmental compatibility equal to that previously established and notify them to the applicant for the approval of a repair design.

IR · 21L.B.201 — 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.