---
title: "ETSO — EASA Definition · Avioverse"
description: "Article 1, Regulation (EU) No 748/2012: “ETSO” means European Technical Standard Order. The European Technical Standard Order is a detailed airworthiness…"
url: "https://avioverse.aero/glossary/easa/etso"
---

# ETSO

EASA defines “ETSO” in one regulation. The wording below is reproduced verbatim from the EASA Easy Access Rules, with a link to the paragraph it comes from.

> “ETSO” means European Technical Standard Order. The European Technical Standard Order is a detailed airworthiness specification issued by the European Union Aviation Safety Agency (the “Agency”) to ensure compliance with the requirements of this Regulation as a minimum performance standard for specified articles;

Article 1 · Initial Airworthiness and Environmental Protection · Regulation (EU) No 748/2012 · Easy Access Rules, 27 Nov 2025 revision · [Read Article 1](https://avioverse.aero/regulations/easa/initial-airworthiness/cover-regulation/general#article-1)

## Also in the aviation glossary

- ETSO EASA EPAS

  European technical standard order

## Defined in the same article

- [article](https://avioverse.aero/glossary/easa/article)
- [complex motor-powered aircraft](https://avioverse.aero/glossary/easa/complex-motor-powered-aircraft)
- [control and monitoring unit (CMU)](https://avioverse.aero/glossary/easa/control-and-monitoring-unit)
- [control and monitoring unit component](https://avioverse.aero/glossary/easa/control-and-monitoring-unit-component)
- [ELA1 aircraft](https://avioverse.aero/glossary/easa/ela1-aircraft)
- [ELA2 aircraft](https://avioverse.aero/glossary/easa/ela2-aircraft)
- [EPA](https://avioverse.aero/glossary/easa/epa)
- [JAA](https://avioverse.aero/glossary/easa/jaa)