What is the recommended rate of descent when using the personnel-lowering device?

The recommended rate of descent when using the personnel-lowering device is two to three feet per second. This rate is considered optimal for ensuring a controlled and safe descent, allowing personnel to lower themselves in a manner that reduces the risk of injury upon landing. A descent rate that is too fast can lead to a hard landing, increasing the chance of injury, while a rate that is too slow may not be practical in an emergency situation where timely evacuation is critical.

In operational contexts, maintaining this specific rate also ensures that personnel can effectively manage their descent, maintaining awareness and control as they approach the ground. This approach is crucial for performing safe ground landings, especially when dealing with varied environmental conditions or terrain.