I was lucky enough in the late 80s to see the AS565 panther do a loop at the factory in Marignane and It was one of the 1st time it was executed live at airshow.
The maneuver was slightly underwhelming as we were all expecting to see a nice round loop, and instead it was basically falling on its tail and recovering.
The point is: in oposition to the BO105 solid machined titaninum head or the lynx all metal head, the AS565 (loop pioneer of the time) is a starflex not as away from the EC 135 flex beams design.