---
title: "Problematic use of substances — EASA Definition · Avioverse"
description: "Article 2, Regulation (EU) No 923/2012: ‘problematic use of substances’ means the use of one or more psychoactive substances by aviation personnel in a…"
url: "https://avioverse.aero/glossary/easa/problematic-use-of-substances"
---

# problematic use of substances

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

> ‘problematic use of substances’ means the use of one or more psychoactive substances by aviation personnel in a way that:
>
> (a) constitutes a direct hazard to the user or endangers the lives, health or welfare of others; and/or
>
> (b) causes or worsens an occupational, social, mental or physical problem or disorder;

Article 2 · Standardised European Rules of the Air (SERA) · Regulation (EU) No 923/2012 · Easy Access Rules, 26 Aug 2025 revision · [Read Article 2](https://avioverse.aero/regulations/easa/sera/cover-regulation/powers-and-recital#article-2)

## Defined in the same article

- [accuracy](https://avioverse.aero/glossary/easa/accuracy)
- [advisory airspace](https://avioverse.aero/glossary/easa/advisory-airspace)
- [advisory route](https://avioverse.aero/glossary/easa/advisory-route)
- [aerial work](https://avioverse.aero/glossary/easa/aerial-work)
- [aerobatic flight](https://avioverse.aero/glossary/easa/aerobatic-flight)
- [aerodrome](https://avioverse.aero/glossary/easa/aerodrome)
- [aerodrome control service](https://avioverse.aero/glossary/easa/aerodrome-control-service)
- [aerodrome control tower](https://avioverse.aero/glossary/easa/aerodrome-control-tower)