What this relates to
Some or all of the external cargo can be lost during a transport flight.
Example
A customer has prepared a net for transport. There are two wooden posts at the bottom of the net, with two large sacks of material, a refrigerator and an emergency generator above them. This prevents the flight assistant from seeing the posts. The helicopter takes off– as it's flying away the load twists around and the wooden posts fall out of the net.
