What describes a suitable load in the context of sling loads?

A suitable load in the context of sling loads is one that has been extensively tested and proven safe through experience. This means that the load meets the necessary safety standards and has a track record of successful transport under similar conditions. Such a load would have gone through the evaluation processes that ensure its stability, integrity, and compliance with load limits defined by both the sling and the aircraft used for the lift.

This correct understanding highlights the importance of having a proven history with the load, which reinforces safety during operation. Loads that are untested or have not been certified may pose risks to both personnel and equipment during transport, which is why proper evaluation and experience are crucial for ensuring safety with sling operations.