ECSS-Q-20A – Quality assurance (19 April 1996)

This standard has been cancelled and replaced by ECSS-Q-20B (8 March 2002).


This Standard defines the Quality Assurance (QA) requirements for the establishment and implementation of QA programmes for projects covering mission definition, design, development, production and operations of space systems, including disposal.

This standard is applicable to the Customer/Supplier relationship of space products to the extent agreed by both parties. The requirements of this standard and its associated level 3 standards should be tailored to the needs and classes of specific projects.

For software quality assurance the software PA standard ECSS-Q-80 is applicable.