GF I have said in the past that HUMS development stalled a long time ago. The problem is that its a costly venture to research and develop. With no joined-up industry initiative to do so, it would be left to the individual operators who have limited budget, resource and technical ability. Bristow did spend a fortune back in the late 80s to develop their IHUMS system, but in this day and age it seems highly unlikely that such an excercise could be repeated. I am pretty sure they made a big financial loss on the whole thing, and the other operators benefitted from the development just as much as Bristow did. (not forgetting of course that BAH carried out a similair excercise). I takes someone or some organisation with lots of initiative and dosh to raise the game, but at the moment I can't see who that would be.