VOX was not used in LAMPS Mk I West. We never trained on it at all. Indeed, the one evolution where VOX would come in most handy (an electric hoist control failure, switch to manual where you push on two hydraulic valves to move the hoist up and down), we still didn't use it. When practicing a simulated hoist control failure, we would use the right hand to push the valves AND operate the ICS (thumb on the "up" valve, ring finger on the "down" valve, middle finger on the ICS while still holding non-functioning hoist controller), while the left guided the hoist itself. VOX just never entered into the equation. I wonder if the age of aircraft and the then current state of technology had anything to do with it? 
