arismount,
It was a genuine question, I'm afraid. I don't fly the EC135 but by all accounts (including those above), it is a very capable Cat A aircraft. Even if the regulations don't
require you to operate a certain way, surely common sense and 'safety sense' should encourage you to act in this manner if you can?
Otherwise, why bother using a twin? Why not just use a powerful single? It would be much cheaper to operate and at least that way, you are halving your chances of an engine failure on t/o resulting in an accident...
Phill77 - thanks for the updated detail.