Instructions for Continued Airworthiness are described in which CFR section?

• A. 14 CFR Part 39, Appendix A
• B. 14 CFR Part 43, Appendix B
• C. 14 CFR Part 91, Appendix D
• D. 14 CFR Part 27, Appendix A

Answer: (D)

Instructions for Continued Airworthiness are the manufacturer’s documented plan for keeping an aircraft safe throughout its life, outlining maintenance requirements, inspection intervals, life limits, and service information that must be followed to stay compliant with airworthiness standards. For rotorcraft certificated in the normal category, this information is described in Appendix A of 14 CFR Part 27. That placement ties the rotorcraft’s certification data directly to the practical, ongoing maintenance expectations that keep the aircraft airworthy.

Other CFR sections cover different aspects of regulation: for example, Airworthiness Directives are found in Part 39 and mandate actions when a defect is identified; maintenance procedures and alterations are discussed in Part 43 but not specifically where the Instructions for Continued Airworthiness are described; Part 91 covers general operating rules. None of these provide the formal location of ICAs for rotorcraft like Part 27 does.