---
title: "21.A.127 Tests: aircraft — Annex I, Initial Airworthiness · Avioverse"
description: "Each manufacturer of an aircraft manufactured under this Subpart shall establish an approved production ground and flight test procedure and check-off…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-i/section-a-technical-requirements/21-a-127"
---

# 21.A.127 Tests: aircraft

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

IR Implementing rule

## 21.A.127 Tests: aircraft

(a) Each manufacturer of an aircraft manufactured under this Subpart shall establish an approved production ground and flight test procedure and check-off forms, and in accordance with those forms, test each aircraft produced, as a means of establishing relevant aspects of compliance with point 21.A.125A(a).

(b) Each production test procedure shall include at least the following:

1\. a check on handling qualities;

2\. a check on flight performance (using normal aircraft instrumentation);

3\. a check on the proper functioning of all aircraft equipment and systems;

4\. a determination that all instruments are properly marked, and that all placards and required flight manuals are installed after flight test;

5\. a check of the operational characteristics of the aircraft on the ground;

6\. a check on any other items peculiar to the aircraft being tested.

IR · 21.A.127 — Regulation (EU) No 748/2012 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GM Guidance material

## GM 21.A.127 Approved production ground and flight tests

The production ground and flight tests for new aircraft will be specified by the aircraft design organisation.

GM · GM 21.A.127 — 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.