14 CFR Part 21

14 CFR Part 21 is the section of the U.S. Federal Aviation Regulations that addresses certification procedures for civil aviation products and articles. It commonly covers processes related to type certification, production approvals, airworthiness certification, and approvals for certain parts or articles.

In aerospace manufacturing, 14 CFR Part 21 is relevant to organizations involved in producing aircraft, aircraft engines, propellers, and approved articles under FAA oversight. It affects how design approvals, production systems, conformity evidence, records, and authorized releases may be managed in regulated aviation supply chains.

14 CFR Part 21 should not be confused with 21 CFR Part 11, which concerns electronic records and electronic signatures in FDA-regulated environments. It is also distinct from quality management standards such as AS9100 and inspection reporting standards such as AS9102, although these may be used alongside regulatory requirements in aerospace operations.