There may be two people with the same name.
The Yves le Roi (French engineer) that I knew was at Bow helicopters in the late '60s. Bow had been formed from what was Bullock Helicopters which the United Nations of the helicopter business in Canada at the time. We had pilots and engineers from all over the world and a great crowd they were.
A connection with Bristow Helicopters at that time was when a crew came over from Redhill to film and discuss our ATCO trailer slinging operations in the High Arctic.
Yves was primarily involved in the maintenance of the Alouette 11s which Bow had at the time but moved on to the 204/5s.
I think it was 1969 that several of us from Bow had moved over to Okanagan Helicopters and Yves made the move shortly after that and went on to run their engine shop. I went to Bristow in the early '70s and lost track of him.
The young lady posting here does sound like she is the daughter of this Yves.
If she is reading this, maybe she could tell her Dad that I was talking to Russ Shand over the holidays and he remembers him well.
Regards
carholme