Some of the right engine fan blades had large chunks taken out. The left engine had many fan blades damaged at midway along the blade leading edge.
The aircraft dumped some fuel before returning to FCO
Without wanting to question the flt crew actions, I would be curious to know what the engine indications were in the flt deck, ANY sign of abnormal indications to BOTH eng at the same time and I would'nt be dumping fuel, it would be an immediate overweight re-land!!!
either way well done to the flt crew