Originally Posted by
cwatters
I'm curious.. It's well known contamination can increase the stalling speed but would the stick shaker also operate at a higher airspeed? How does the stall warning sensor know there is contamination or is it only looking at air speed and AOA?
Actually that sort of makes AirRabbit's point, since the AOA vane only reads angle of airflow. If the airplane was rotated normally with the wing stalled at a lower than normal AOA due to ice affect, there would only be buffet sounds on the CVR. The stick shaker would not have activated.