Knievel
May i sugguest you have a look at this site
www.aaib.dft.gov.uk
Its the air investigations website and there is a monthly bulletin.
Do a search for R22 and it will give you all the accidents over the yesars. I found this incredibly informative and regularly discussed the accidents with my instructor and how to avoid the situations that have caused them.
Personally i find the reports extremely useful and if any good is to come from these accidents or tragic loss of life, its that guys like you and me dont make the same mistakes.