What document governs aerial work operations like carrying or towing loads?

The document that specifically governs aerial work operations such as carrying or towing loads is the Part 137 Operations Guidelines. This regulation is designed to provide standards and protocols for various kinds of aerial work, including agricultural spraying, fire-fighting, and other operations that involve load carrying or towing.

Part 137 establishes the requirements for pilot certifications, aircraft operational limitations, and safety protocols specifically tailored to these types of operations, addressing the unique challenges and risks they present. This ensures that aerial work is conducted safely and efficiently, following specific procedures mandated by aviation authorities.

In contrast, the other documents mentioned pertain to different sectors of aviation. For example, Part 121 is focused on scheduled air carriers, while Part 135 deals with commuter and on-demand operations. Part 138, although relevant to agricultural aviation, does not specifically address all aspects of aerial work like towing loads. Therefore, the choice of Part 137 is the appropriate one for aerial work operations as it directly addresses the nature of those activities.