According to this description and this one of some Trent 1000 engine problems, there appears to be a problem with cracking/corrosion of the fan blades, but does anyone have any insight as to why this is the case? (And why this problem doesn't occur on other platforms?)
I was thinking it could be due to the composites used in the compressor fan blades, or perhaps something to do with the no bleed-air system unique to the Trent 1000, but I'm not entirely sure.