HeliBaron, Shytorque.
The Italian authorities issued AD 2000-371 which I believe covers the rotating scissors issue. Mandatory for UK registered aircraft. No reason for the CAA to issue an AD.
Manufacturers mandatory bulletins are only mandatory if backed by an AD!!!!!!!!!
It is the operators choice as to what action they take in respect of them.
If they choose to ignore them they might have to explain their decision in court at a later date.