Skip to content

A gradual release of Avioverse begins in October 2026. Request early access →

GM No 1 to 21.A.125B(a) Uncontrolled non-compliance with applicable design data

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

GMGuidance material

GM No 1 to 21.A.125B(a) Uncontrolled non-compliance with applicable design data

An uncontrolled non-compliance with applicable design data is a non-compliance: a) that cannot be discovered through systematic analysis or b) that prevents identification of affected products, parts, appliances, or material.

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

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.

Ask Metis about GM No 1 to 21.A.125B(a) Uncontrolled non-compliance with applicable design data →

Metis opens with Avioverse in October 2026 · request early access.