Highway

I do like to add/stress that this problem also occured before the latest update (whilst flying a chinook), and I did check my controls and messed around with them a little bit but nothing had an impact.. I do need to mention that I fly with keyboard and mouse and use no form of analouge throttle input. I also heard that Moonfire has a video regarding this:

Hey guys, I noticed something odd whilst flying the RHS helicopters. Sometimes this occurs what i think is a bug, the turbine on the helicopters gets stuck into full throttle mode. Which prevents me of slowing down after a sizeable descent. Once this has occured (ofwich I do not know what triggers it) I'm still able to descent using the collective lower but I'm not in any way able to slow down. If I do so use autohover to try and slow down the vehicle it launches itself upward into the air never actually coming to a stop, which to me is a key indicator thats this problem is occuring due to some issue with the turbines. I hope this gives an accurate discription of what my findings are regarding to this issue so this can hopefully can get fixed. If it is even fixable on our end and not up to the RHS modders. Greetings, Highway.

Is it possible you forgot to run OBS as admin?