I can believe that autorotation landings are dangerous, but then, so are airplane engine-out landings at night over water... but how often are they necessary?
Helicopters are more dangerous than other aircraft:
The crash rate for helicopters alone is 9.84 per 100,000 hours. That means helicopters crash about 35 percent more often per hour in the air than your average aircraft
But have a lower fatality rate:
The fatality rate in helicopter crashes is 1.3 deaths per 100,000 flight hours versus 1.4 deaths for aircraft in general.
Helicopters are more dangerous than other aircraft:
The crash rate for helicopters alone is 9.84 per 100,000 hours. That means helicopters crash about 35 percent more often per hour in the air than your average aircraft
But have a lower fatality rate:
The fatality rate in helicopter crashes is 1.3 deaths per 100,000 flight hours versus 1.4 deaths for aircraft in general.
https://slate.com/news-and-politics/2009/10/why-are-helicopt...