---
title: "21L.A.45 Detailed technical specifications and environmental protection requirements that are applicable to aircraft subject to declarations of design compliance — Annex Ib, Initial Airworthiness · Avioverse"
description: "The declarant shall demonstrate the compliance of the aircraft design with the detailed technical specifications and the applicable environmental…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/section-a-technical-requirements/21l-a-45"
---

# 21L.A.45 Detailed technical specifications and environmental protection requirements that are applicable to aircraft subject to declarations of design compliance

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

IR Implementing rule

## 21L.A.45 Detailed technical specifications and environmental protection requirements that are applicable to aircraft subject to declarations of design compliance

The declarant shall demonstrate the compliance of the aircraft design with the detailed technical specifications and the applicable environmental protection requirements referred to in point 21L.B.61, which are applicable to that aircraft and which are effective on the date on which the declaration of design compliance is made to the Agency.

IR · 21L.A.45 — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GM Guidance material

## GM1 21L.A.45 Detailed technical specifications and environmental protection requirements that are applicable to aircraft subject to declarations of design compliance

ENVIRONMENTAL PROTECTION REQUIREMENTS

(See GM1 21L.B.61(c)(1))

Volumes I, II and III of Annex 16 to the Chicago Convention are available at https\://elibrary.icao.int/.

Since the Standards and Recommended Practices in Annex 16 Volumes I, II and III apply only to certain categories of products and as such do not necessarily apply to all products that are within the scope of Subpart C, it is recommended that the declarant may contact the Environment and Sustainability Section of EASA to confirm the environmental protection requirements that are applicable to their particular product and at any stage of the declared process for further guidance.

GM · GM1 21L.A.45 — 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](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.