The following standards can be downloaded in PDF or MS Word format.

The European Space Agency hereby disclaims any liability for use of these electronic documents and assumes no responsibility for any error or omission therein. See the License agreement – Disclaimer for more information.

NOTE: June 2026:
There are technical issues with the online Change Request form. Please use for any ECSS Change Requests the ECSS CR form in Excel format and submit it by e-mail to the ECSS Secretriat.

1. ECSS-U-AS-10C Rev.2 – Adoption Notice of ISO 24113: Space systems – Space debris mitigation requirements (9 February 2024)
2. ECSS-U-ST-20C – Space sustainability – Planetary protection (1 August 2019)