MichaelJP,
I had no inside information on this accident but when a light aircraft comes down like that
I am always keen to know the circumstances as even the gossip can teach something.
With the Rotax I have always been nervous about exhaust and fuel fittings when I watch how they shake so much on start-up and shutdown.
Recently on inspection the exhaust on my Champ had an ugly crack in the exhaust and it was only spotted after another owner casually mentioned one on his Cub.
I suppose we just have to live and learn, and try to postpone the appointment with the Grim Reaper as long as possible.