ATR 72 - 500
Automatic Flight Control System
WHEN CAN AUTOMATIC DISCONNECTION OF THE AUTOPILOT OCCUR?
A - The engagement condition of AP or/and YD is no longer met or mismatch between the two pitch trims
B - Stall warning indicator threshold is achieved
C - There is a disagreement between the two AHRS or the two ADC
A + B + C are correct.