Which Part of the 14 CFR outlines the requirements for Continued Airworthiness?

The correct choice focuses on the specific regulations established to ensure that aircraft maintain their airworthiness standards throughout their operational life. Continued Airworthiness involves the ongoing state of an aircraft being fit for flight following its initial certification, and is crucial for safety.

Part 27 of the 14 CFR specifically addresses the airworthiness standards for normal category rotorcraft. This part outlines the design and operational requirements necessary for ensuring that such aircraft meet the necessary standards for safety and reliability throughout their operational lifespan, particularly after maintenance, alterations, or repairs are conducted.

While the other options refer to different categories or types of aircraft and their respective standards—such as Part 29 which covers transport category rotorcraft, Part 33 focusing on aircraft engines, and Part 43 detailing maintenance, preventive maintenance, and alterations—none are specifically dedicated to continued airworthiness in the same way Part 27 does for rotorcraft. Understanding the context of each part provides clarity on how they contribute to the broader framework of aircraft safety regulations.