Under a US Army & US Navy research program, the original 16H-1 Pathfinder was modified into the 16H-1A Pathfinder II 
List of Operators of Piasecki 16H-1A Pathfinder II | |
| From | Organisation with model 16H-1A Pathfinder II | |||||
Construction Numbers | Help Us | |
| C/N | Year | History | ||