Yeah, a sad day indeed
One of the ballsiest riders there was and the first rider to lap the IOM at an average of 120mph. I've seen the on-bike video from one of his record laps and it is a truly humbling experience.
At least he died in fitting style, crashing his helicopter rather than going out with some wasting disease or something. Not much of a consolation I know.
R.I.P. Steve and condolonces to all your loved ones.