ADR failures require time and crew coordination to evaluate the situation. Multiple failures may affect several systems in the aircraft. Particularly when failures occur at critical phases of flight (i.e., takeoff roll, after airborne, short final in IMC, go around in IMC), and when warnings are inhibited. Time is critical and may not be available to evaluate the situation and positively detect the faulty system.
In this ACTIVE RECALL Episode, you can find management recommendations in order to better sort ADR failures on the A320.
CLICK HERE=>PILOTECNICA ACTIVE RECALL