How many people have been hurt on the ground anywhere in the world due to engine failure in ANY type of single engine heli ? In Australia, it's none. I suspect that the numbers are similar elsewhere.
My research indicates that from 2000 to 2013 there were no reported injuries to the public in filming or photography related prangs. Worldwide, 150 incidents, twins and singles.
But sadley a member of the public was killed this year when a news chopper toppled from a rooftop pad.
Mickjoebill