---
title: "GM1 UAS.STS 02.020(3) UAS operations in STS-02 — Annex to Implementing Regulation (EU) 2019/947 — UAS OPERATIONS IN THE ‘OPEN’ AND ‘SPECIFIC’ CATEGORIES, UAS · Avioverse"
description: "GM1 UAS.STS-02.020(3) UAS operations in STS-02 FLIGHT VISIBILITY Point UAS.STS-02.020(3) requires a minimum flight visibility of 5 km to ensure that the…"
url: "https://avioverse.aero/regulations/easa/uas/annex-to-implementing-regulation-eu-2019-947-uas/appendices/gm1-uas-sts-4"
---

# GM1 UAS.STS 02.020(3) UAS operations in STS-02

Annex to Implementing Regulation (EU) 2019/947 — UAS OPERATIONS IN THE ‘OPEN’ AND ‘SPECIFIC’ CATEGORIES · Regulations (EU) 2019/947 and 2019/945 · EAR revision 29 Jun 2026

GM Guidance material

## GM1 UAS.STS 02.020(3) UAS operations in STS-02

GM1 UAS.STS-02.020(3) UAS operations in STS-02

FLIGHT VISIBILITY

Point UAS.STS-02.020(3) requires a minimum flight visibility of 5 km to ensure that the [remote pilot](https://avioverse.aero/glossary/easa/remote-pilot) and/or the AO(s) can adequately visually scan the [operational volume](https://avioverse.aero/glossary/easa/operational-volume) and surrounding airspace to detect well in advance any incoming manned aircraft and identify any risk of collision with that aircraft.

‘Flight visibility’ should be understood as the shortest distance from the remote pilot’s position, or from the position of each of the AOs (if employed), at which unlighted objects may be seen and identified at day and prominently lighted objects may be seen and identified at [night](https://avioverse.aero/glossary/easa/night). It should be considered in all directions.

Before starting the intended UAS operation, the UAS operator should gather all relevant information that may affect the UAS flight visibility.

Other aspects that should be considered are, for example, the light conditions (including the sun or other intense lights that may blind the remote pilot and/or the AO(s)), the presence of natural or artificial obstacles, the cloud ceiling level, the presence of smoke, etc.

GM · GM1 UAS.STS — Regulations (EU) 2019/947 and 2019/945 · ED Decision 2022/002/R · UAS Easy Access Rules · EAR revision 29 Jun 2026

[All rules in APPENDICES](https://avioverse.aero/regulations/easa/uas/annex-to-implementing-regulation-eu-2019-947-uas/appendices)

Consolidated from the EASA Easy Access Rules (revision 29 Jun 2026, 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.