sprocket,
I'am not anymore 100% sure about the AS 350, but I know for a fact, that the AS 355 has only 1 accumulator and it is mounted to the tailrotor servo actuator. The AS 355 gets hydr. redundancy from it's tandem servos and 2 hyd pumps. Maybe thats why they have no accumulators at the cyclic servos. I addition they have simple jack stall warning lights, like coalface describes.
sp