I think this may be the first time any Authority (in this case EASA), has predicated the safety of a helicopter based only on HUMS indications. There is no other inspection, visual or otherwise, required.
Does this mean that HUMS has finally come of age?
I know the oil companies and CAA have disregarded the AD but EASA are happy to let the 225 fly if HUMS is closely monitored. This is a big step forward.