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ISO/CD 21351

Space systems — Functional and technical specifications

General information

Current stage: 30.99 Effective date: Mar 23, 2026

Originator: ISO

Owner: ISO/TC 20/SC 14

Type: International Standard

Scope

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 21351:2005

NOW

IN_DEVELOPMENT
ISO/CD 21351
30.99 CD approved for registration as DIS
Mar 23, 2026