If you search on the web to find articles related to helicopter accidents, you’ll find about 429,000 results on Google alone. There are not many popular people (or celebrities) who died on a helicopter crash from what I read. One case though is that of Vic Morrow who died while filming Twilight Zone on board a chopper. I understand from the write-up that the accident involved kids and stuntmen.
On the legal side of things, it’s good that the families of these victims were able to seek help from a company like HelicopterAccidentAttorney.com, which can provide specific legal assistance through an aviation attorney.