The invention is related to a helicopter 1 with a fuselage 2 and a composite tail boom 3, the composite tail boom comprising at least a tubular tail boom cone 3b and a composite attachment ring segment 7 that defines a mating face, the mating face being connected to the fuselage at an associated connection interface 6 by means of a plurality of tension members that are oriented longitudinally with respect to a longitudinal extension direction of the composite tail boom 3, the plurality of tension members being distributed over a perimeter of the composite attachment ring segment 7, the composite attachment ring segment 7 comprising a clamp ring section with a plurality of tension member accommodations, the clamp ring section defining the mating face of the composite attachment ring segment 7, wherein the plurality of tension members is at least partly accommodated in the plurality of tension member accommodations.