converting one's licence to a Russian one...(Have CAA, JAA, FAA, CASA)
You are a real Multipilot
like Bourne Identity?
Converting into PPL isn't so difficult, but you couldn't use a russian license without typerating. And it takes a few weeks to be real Mi-8/17 qualified. Especially in the north it needs only professionals and not western amateurs as co-seaters. May be they need western amateurs to pay good dollars. In this case i have no doubts you could have the co-seat for a time.