ECSS-Q-ST-20C Rev.2 – Quality assurance (1 February 2018)

This Standard cancels and replaces ECSS-Q-ST-20C Rev.1 (1 March 2013).



This Standard defines the quality assurance (QA) requirements for the establishment and implementation of a Quality Assurance program 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 constraints 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


Docx file: ECSS-Q-ST-20C-Rev.2(1February2018).docx
PDF file: ECSS-Q-ST-20C-Rev.2(1February2018).pdf

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Md5 checksum .pdf file = 166A213970F707ABD8A26A51CB075D2F