Please!! Enough!
Despite nearly 40 years of flying helicopters professionally I do not feel qualified to comment on this thread as I have been retired for the past 10 years and I am therefore out of touch and I also have no knowledge of the EC135 or its systems.
It is a great pity that somehow comments on this tragedy cannot be restricted to those who qualify under the heading of this forum ie "a haven for helicopter professionals to discuss the things that affect them". If you are not a helicopter professional then if you have genuine question I'm sure members will be willing to answer it but the unbelievable hypotheses from some posters who are not helicopter professionals contribute nothing to the thread and do disservice to those who have died in this disaster.