Well there is nothing like blind faith!
The fundamental problem here is that Airbus have not been able to duplicate the failure.
Instead they are relying on trying to use procedural barriers against potential failure causes. But the issue is that these are potential causes, not the definitive cause - which might be something new, but more likely is some threshold value being reached which means that instead of spalling the material cracks.
There was some interesting comment earlier on regarding better lubrication which might be an interesting route of investigation - suppressing surface damage whilst allowing crack initiation. But until Airbus can duplicate the problem, all of this is guesswork. Gearbox has fallen off a truck - don't let gearboxes fall off trucks, gearbox has x hours - don't let gearboxes accumulate x/4 hours and so on.
They might be the answer - alternatively they might just be garlic necklaces - incredibly effective in repelling vampires - and you know I've never been bitten by a vampire since I started wearing it!
Last edited by gasax; 26th Oct 2017 at 09:33.