Hi:
Heli Jet airways had a lioghtning strike, I'm guessing 7 or 8 years ago.
They operate a schedule service between Vancouver and Victoria, British Columbia using Sikorsky S-76 A aircraft.
I don't remember all the details, but they were hit in cruise(I think) . The aircraft was grounded for about a year after. The gear boxes all had to be rebuilt becuse of arcing on the gear teeth.
Sorry I can't help you with more details. Maybe if you sent them an e-mail they could probably fill you in.
http://http://www.helijet.com/about/about.php?pageID=51