---
title: "21L.A.41 Scope — Annex Ib, Initial Airworthiness · Avioverse"
description: "This Subpart establishes the procedure for declaring the design compliance of aircraft, and establishes the rights and obligations of the persons making…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-a-technical-requirements/21l-a-41"
---

# 21L.A.41 Scope

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

IR Implementing rule

## 21L.A.41 Scope

(a) This Subpart establishes the procedure for declaring the design compliance of aircraft, and establishes the rights and obligations of the persons making such declarations.

(b) This Subpart applies to the following categories of aircraft, provided that the design of the aircraft does not include novel or unusual design features:

1\. an aeroplane with a maximum take-off mass (MTOM) of 1 200 kg or less that is not jet-powered, and has a seating configuration of maximum two persons;

2\. a sailplane or powered sailplane with an MTOM of 1 200 kg or less;

3\. a balloon designed for not more than four persons;

4\. a hot air airship designed for not more than four persons.

(c) For the purpose of this Subpart, a design feature shall be considered to be novel or unusual if at the time that the declaration of design compliance is made, that design feature is not covered by the detailed technical specifications established and made available by the Agency in accordance with point 21L.B.61.

IR · 21L.A.41 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · 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.