Bristow is pretty confident that had the CHC aircraft been operated by us, it would not have been despatched. Don't forget that the Maint Manual procs and the general profile of the relevant HUMS parameters had been changed/raised since the May ditching and there is surely no way that any operator who was up to speed with events (which we all are) would simply have put it on close monitoring.
HC - its a big claim and without wishing to get bogged down in the could have, would have, should have... it absolutely highlights the lack of clarity and direction from EC with HUMS. Had you got that there would be no question of any operator handling the situation any differently.
Given what had happened in May it isn't good enough to just direct operators to take a close look at certain part numbers and monitor more closely.