Which CFR part governs airworthiness certification and the issuance of airworthiness certificates?

• A. 14 CFR Part 21
• B. 14 CFR Part 39
• C. 14 CFR Part 61
• D. 14 CFR Part 91

Answer: (A)

Airworthiness certification is governed by the rules that lay out how a product becomes eligible to fly. 14 CFR Part 21 provides the certification procedures for aircraft and the articles, including how an aircraft is determined to conform to its type design and how an airworthiness certificate is issued. It covers type certifications, production certificates, changes to design, repairs, and the process the FAA uses to confirm conformity and issue the certificate. This is the part that defines who can issue the airworthiness certificate and what requirements must be met for an aircraft to be considered safe to operate.

The other parts address different aspects of aviation regulation and do not govern the certification and issuance of airworthiness certificates. For example, Part 39 deals with Airworthiness Directives, which mandate required actions to address safety issues but aren’t the procedures for certifying an aircraft. Part 61 covers certification of individuals like pilots and mechanics and their privileges, while Part 91 outlines general operating and flight rules.