When erecting or stowing a swing-away lattice extension, what should be used to control its movement?

Using a tag line is the correct approach for controlling the movement of a swing-away lattice extension during erection or stowing. A tag line is a rope that is attached to a load being lifted, which allows the operator or crew members to control the position and orientation of the load without having to be directly underneath it or in a potentially dangerous position. This is particularly important when dealing with large components, such as a swing-away lattice extension, where precise positioning is critical for safety and efficiency.

Tag lines enable the crew to mitigate the risks associated with swinging or sudden movements caused by wind or other influences. By guiding the load with a tag line, the personnel can maintain control and ensure that the extension is properly positioned in accordance with safety protocols and operational guidelines.

Other options, while they may provide some form of control, do not offer the same level of safety and effectiveness in managing the specific challenges of handling large, movable components such as a swing-away lattice extension.