oldchina, I was taking a little liberty in my comment, have happily flown the world in twins without thought, even made a living flying single engine over water IMC, though I have wondered about being 370 from home and down to one, the reaction of fellow pax may be interesting, particularly if accompanied by severe vibes from an unbalanced rotor. Risk assessment is a funny thing, we parachute with two canopies as well, hard to get folk to accept that it's a safe sport though, as an ex jumper it seems to me far more parachutists these days die in aircraft accidents than skydiving.