Friends,
I haven't heard any comment regarding AW139 fragile composite Tail Boom. In fact I am Helicopter Pilot at 30 years. But this helo is probably the only medium size with full composite Tail I have seen.
As everybody knows: Composite are very resistant at compression and expansion forces but very fragile at torsion forces - just forces suffered by a helicopter tail. I will bet that if Agusta should install cameras to screenning this helo flights.....I am sure they would have many "surprises"......