---
title: "Publication of the common information referred to in Article 5(4)(a) — ANNEX II, U-space · Avioverse"
description: "Providers of common information services shall ensure that the information referred to in Article 5(1), (2) and (3) is available online through common…"
url: "https://avioverse.aero/regulations/easa/u-space/annex-ii/table-of-contents/publication-of-the-common-information-referred-to-in-article-5-4-a"
---

# Publication of the common information referred to in Article 5(4)(a)

ANNEX II · Regulation (EU) 2021/664 · EAR revision 29 May 2024

IR Implementing rule

## Publication of the common information referred to in Article 5(4)(a)

1\. Providers of common information services shall ensure that the information referred to in Article 5(1), (2) and (3) is available online through common open, secure, scalable, sustainable technologies that are able to support the required levels of availability and performances, and that ensure interoperability and the free movement of U-space services in Union.

2\. Providers of common information services shall grant access to common information on a nondiscriminatory basis.

3\. [U-space service](https://avioverse.aero/glossary/easa/u-space-service) providers and air traffic service providers shall use a common secure interoperable open communication protocol.

IR — Regulation (EU) 2021/664 · Implementing Regulation (EU) 2021/664 · U-space Easy Access Rules · EAR revision 29 May 2024

[All rules in Table of contents](https://avioverse.aero/regulations/easa/u-space/annex-ii/table-of-contents)

Consolidated from the EASA Easy Access Rules (revision 29 May 2024, 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.