ECSS-Q-ST-20C Rev.1 – Quality assurance (1 March 2013)

This standard has been superseded by ECSS-Q-ST-20C Rev.2 (1 February 2018)


This Standard defines the quality assurance (QA) requirements for the establishment and implementation of a Quality Assurance programme for products of space projects.
Discipline related qualification activities are complemented in standards specific to those disciplines (e.g. ECSS-E-ST-32-01 for fracture control).
For software quality assurance, the software product assurance standard, ECSS-Q-ST-80 is applicable.

This Standard is applicable to all space projects.

This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.
For the tailoring of this standard the following information is provided:

  • A table providing the pre-tailoring per “Product types” in clause 6
  • A table providing the pre-tailoring per “Project phase” in Annex J


Md5 checksum .doc file = 43617EE81EB3DFADCF6223DC21FD36D3
Md5 checksum .pdf file = 285827864EED7199FDABDAE129E04FAD

This Standard cancels and replaces ECSS-Q-ST-20C (15 November 2008).