I believe one had to do with the 407 having only one hydraulic system. Bell had to demonstrate that the 407 was controllable and able to fly IFR with the hydraulics failed. No expert but I do not believe that the autopilot could handle the flight controls without hydraulics but I sure could be wrong. I have been tempted to see if the Helisas (VFR only autopilot) in the 407 I fly could handle the non-hydraulics loads however I don't want to break anything. The A119 has two systems. I can't recall what the second exemption was at the moment. I'll see if I can find it.