The smooth and steady application of brakes symmetrically across the aircraft improves lateral stability and ensures a constant deceleration rate. This greatly enhances passenger ride comfort during the landing. The brakes are always applied at the same point in the touchdown sequence and the deceleration rate is constant which makes stopping distances consistent and predictable. The pilot can pre-select a runway turnoff with a high degree of confidence. Operation under Cat IIIb auto-land conditions is enabled.
Some studies suggest that brake life can be extended by the use of autobrakes.
Takeoff Mode RTO autobrakes have been certified as the primary means of stopping the aircraft during a rejected take-off. With the system armed during takeoff, movement of the thrust levers back to the fully retarded position or operation of the thrust reversers will trigger full brake application. This automatic feature reduces crew workload during an emergency and frees resource for dealing with cause of the rejected take-off. The prompt, sustained application of full system pressure to the brakes minimizes stopping distance and reduces the probability of runway excursion. As with the Landing Mode, application of pedal braking transfers control back to the pilot.