---
title: "GM No 2 to 21.A.303(c) Officially recognised Standards — Annex I, Initial Airworthiness · Avioverse"
description: "In this context ‘officially recognised Standards’ means: Those standards established or published by an official body whether having legal personality or…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-a-technical-requirements/gm-no-2-to-21-a-303-c-officially-recognised-standards"
---

# GM No 2 to 21.A.303(c) Officially recognised Standards

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

GM Guidance material

## GM No 2 to 21.A.303(c) Officially recognised Standards

In this context ‘officially recognised Standards’ means:

1\. Those standards established or published by an official body whether having legal personality or not, which are widely recognised by the air transport sector as constituting good practice.

2\. The standard used by the manufacturer of the equipment as mentioned in paragraph 2 of AMC 21.A.303(c).

GM — Regulation (EU) No 748/2012 · ED Decision 2012/020/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-i/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.