P87
The reappearance of the flight directors on the PFD when two airspeeds are calculated as similar may prompt the crew to promptly engage an autopilot. However, although the magnitude of these speeds may be the same, they may be erroneous and low, and could cause the autopilot to command flight control surface movements that are incompatible with the aircraft’s actual speed.
Is it any different if it's coming from the sidestick ?