Published
ISO 21351:2005 provides an overview of the respective purposes and positions of functional and technical specifications, their required contents, and the process for developing these documents.
ISO 21351:2005 is applicable to all types of space systems, all product elements, and projects.
PUBLISHED
ISO 21351:2005
90.92
Standard to be revised
Mar 23, 2026
PROJECT
ISO/CD 21351
Space systems - Functional and technical specifications (ISO/FDIS 21351:2004)
95.99 Withdrawal of Standard