My Grandfather was an airframe rigger on Tiger Moths at Temora during the earlier war years. He doesn't have a lot of praise for them and honestly can't believe that they are still flying around the place.
I do not wish to disparage the operator or the victims of this accident but one does have to wonder about the wisdom of using ancient wood and wire flying machines in the commercial world of today... Having said that, I hate the thought of yet another restrictive rule being introduce to spoil legitimate fun and enjoyment of aviation. Unfortunately there are always risks involved in this business and someone, sometime inevitably pays the ultimate price...
My thoughts are with the families of those involved in this tragedy and I hope more definitive answers will be forthcoming compared to other recent historical aircraft crashes...