There have been two or three prosecutions in New Zealand over the last 2/3 years involving engineers and bogus parts. If my memory serves me right two of these prosecutions have been successful - one on the West Coast of the South Island and one in the Bay of Plenty region in the North Island. In the later, the engineer was found guilty of manslaughter.
This prosecution followed the crash of an R-22, which killed two, because the 'home repaired' tailrotor fitted to the machine delaminated in flight. The blade had been sourced from a Californian junk yard. An American father and son where charged over selling bogus parts - I think that case was concluded recently also.
PAC ROTORS - can you remember more details??