Which certificate authorizes production of reasonable duplicates of aircraft, including replacement and modification parts?

• A. Type Certificate
• B. Supplemental Certificate
• C. Design Certification
• D. Production Certificate

Answer: (D)

Production-related responsibilities hinge on having a Production Certificate, which authorizes the manufacture of aircraft, engines, and propellers to the approved type design, including reasonable duplicates and the supply of replacement and modification parts. This ensures that items produced or repaired conform to the certified configuration and quality standards. The type certificate covers the initial design approval, not ongoing production; a supplemental type certificate handles approved changes to an existing design; and design certification refers to design approval in a broader sense, not to production rights.