The airworthiness standards for transport category rotorcraft are found in which part?

The airworthiness standards for transport category rotorcraft are indeed outlined in Part 29. Part 29 specifically addresses the requirements applicable to large rotorcraft that are intended for commercial operations, such as those used for transporting passengers or freight. These standards are designed to ensure safety and reliability in the operation of these types of aircraft, taking into account factors like performance, structural integrity, and systems management crucial for transport operations.

In contrast, other parts listed address different categories of aircraft. Part 23 pertains to small aircraft, Part 25 focuses on transport category airplanes (fixed-wing), and Part 27 is concerned with small rotorcraft. Each part is structured to address the unique characteristics and operational needs of the aircraft type it governs, making Part 29 the correct choice for transport category rotorcraft.