Had the same problem (FA Hornet) spent 2 days trying to work it out, it shows clearly on the Hud after pressing S on the keyboard NWS yet not responding in game, add the command to the joystick and it will work
Thank you, The command S from the key board was registering on the Hud NWS however it was not working in gameplay, after designating it to a Joystick button it now responds and is working