Originally Posted by TyroPicard
Because without much airflow at really low IAS gravity affects the position of the AoA vane just as it does on the ground? The designers had to choose a speed - they chose 60kts.
Observation of the AoA vanes attitude during walk around tells me that they are
not affected by gravity, or they would all display that unique attitude commanded by gravity.
Something else is behind that AoA data invalidity below 60kts ...