[slohand]

Its been twenty years but I did have to work on part of the control systems. Everything, pedals, cyclic and collective was hooked to electric sensors that connected to two SAS boxes, Stability Augmentation Systems, one was for normal use and one was backup. These electronic boxes controlled hydraulic servos that controled the rotors, ect. Yes I do believe both rotors were controlled. that was how you could turn. Obviously with a one rotor chopper the tail rotor lets you turn. As I said its been 20 years and I have not worked on any aircraft after leaving the army in 84.

[Dustoff45]

We had two hydraulic actuators on each rotor head. With those we could move the swath plate through 360 degrees.

Were you ever on a flight where the SAS was disabled. every input was way too late, so you wallowed all over the place.

The SAS cabinet, and all that was in there made the pilots day go a whole lot better.