Is any single-axis autopilot for a light piston single certified for unusual-attitude recovery? Recovery from unusual attitudes is required during primary training and must be demonstrated during the checkride. In the case of an incapacitated or disoriented pilot, will activating a single-axis autopilot in ROL mode while in an unusual attitude safely recover straight-and-level flight?
You would need a three-axis autopilot. The nature of an unusual attitude is that it needs corrections around all three axes.