Setting the autobrake selector knob to OFF will do what?

Setting the autobrake selector knob to OFF will do what?

• A. Disarm the autobrake modes
• B. Engage maximum braking automatically
• C. Increase brake pressure to the wheels
• D. Disable the parking brake

Answer: (A)

The autobrake system is designed to apply a preselected, automatic braking force on landing or during a rejected takeoff. Setting the selector to OFF disables that automatic function, disarming all autobrake modes so no automatic brake application will occur. You then rely on manual braking input from the pilots. This does not cause automatic maximum braking to occur, and it does not by itself increase brake pressure—the system simply stops executing the preset automatic deceleration. The parking brake is a separate system and remains unaffected by turning autobrake off.

The autobrake system is designed to apply a preselected, automatic braking force on landing or during a rejected takeoff. Setting the selector to OFF disables that automatic function, disarming all autobrake modes so no automatic brake application will occur. You then rely on manual braking input from the pilots.

This does not cause automatic maximum braking to occur, and it does not by itself increase brake pressure—the system simply stops executing the preset automatic deceleration. The parking brake is a separate system and remains unaffected by turning autobrake off.