I've driven EC225s for thousands of hours and there's one difference between this terrible accident and the equally terrible REDL, apart from the fact that the aircraft involved are different variants of the Super Puma family. As far as I can recall REDL had been "making metal" for a few flights or some hours before the epicyclic gears at the top of the gearbox failed. There was communication between engineers and Eurocopter before the accident to establish whether the gearbox should be allowed to continue in service. Please correct me if I'm wrong.
As a consequence and shortly after that tragedy, all Mk2s and all EC225s had the magnets just below the epicyclic stages removed, so that the shedding of metal particles would become obvious much sooner. Is this so please, respected engineers?
What I'd dearly like to know is whether the Norwegian EC225 gearbox had been "making metal" in the run-up to this latest terrible crash, because if wasn't then that inclines me towards believing that a suddenly disconnected suspension strut might well have been the cause.