"Growth of a fatigue crack requires repeated load cycles, for example through rotation of a gear or a
main rotor start/stop cycle. More work is required both to understand the propagation rate and the
origin of the observed fatigue cracks, but at present, the AIBN finds it most likely that the fatigue
fracture of this planet gear subsequently resulted in loss of the main rotor. It is considered unlikely
that this fatigue crack propagated as a consequence of a structural break-up of another component."
.... Looks like they are getting to the bottom of this and it does not look good. AH must regret the initial suspension strut statement.