The rumor say 6 months.
Well the fan was disaligned at the impact, so all of the blades will have to be replaced, the whole fenestron gearbox checked, repaired, or replaced, the duct will have to be replaced, so is the whole skin. Than the drive train, whole tail section checked for cracks, bends, material strains. Don't know where the tail fan drive train goes in the EC155, so that parts will have to be checked also.
Too cut it short - the while tail will have to striped down, checked and every component repaired/replaced. The whole thing is very serious - many fast-spinning, precise-machined, very important parts out there
