Not sure this design flaw has ever been fixed by Sikorsky other than increased monitoring -
https://skybrary.aero/accidents-and-...north-sea-2016
https://www.offshore-technology.com/...60853/?cf-view
I believe there were a handful of identical issues going back previously also as they issued an emergency AD just before that accident above.
https://www.ainonline.com/aviation-n...2-emergency-ad
Just a post to highlight previous loss of control events. Most likely unrelated to this event but you never know.