I see the MR controls mixer and the engine installation but nothing of the nodal beam transmission mounting system, or even the roof deck the nodal beam is attached to. Did the rotor and transmission just rip itself off the aircraft and take the roof with it? That's an extremely violent set of loads to cause that. Loads this violent could also fail the tail boom if it was the same source of loads that contributed to both structural failures with the boom failing first, then the roof structure.
