Going back to the beginning of the thread the poor sales were the result of the US Army sales of surplus Huey's going cheap and perhaps the lack of role flexibility.
One thing that is noticeable and that is how quiet it is.No tail rotor and the relatively slow turning main rotor make it probably the quietest.
In terms of the accident record one must remember that it spends much of its life lifting and carrying,usually in inhospitable locations where there is nowhere to land when the red light comes on?