---
title: "GM No 2 to 21.A.15(d) Determination of type or variant — Annex I, Initial Airworthiness · Avioverse"
description: "The criteria for the determination whether an aircraft with a new type certificate (TC) is considered a new type or is a variant with reference to…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-a-technical-requirements/gm-no-2-to-21-a-15-d-determination-of-type-or-variant"
---

# GM No 2 to 21.A.15(d) Determination of type or variant

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

GM Guidance material

## GM No 2 to 21.A.15(d) Determination of type or variant

The criteria for the determination whether an aircraft with a new type certificate (TC) is considered a new type or is a variant with reference to another aircraft type from the same TC holder for the purpose of the specific OSD constituent are provided in the applicable certification specifications for maintenance certifying staff data, flight crew data and cabin crew data.

GM — Regulation (EU) No 748/2012 · ED Decision 2016/007/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.