GLSNightpilot
That link I first posted came from rec.aviation.rotorcraft but the page the link was on was full of dirty pictures, and poor Deeko01 got grossed out. That x-rated stuff stuff is on bus adverts where I grew up!
The film is of a Sea King in gray paint with large dark numbers 744 on the right side aft of the sliding door making a perfectly normal approach to a shipdeck in very calm seas. As he gets to the hover, a full right yaw trun develops, he loses control and the aircraft whacks the deck on its side, then tumbles off. Horrible stuff.