Boeing 747: Autobrakes

747 Autobrakes by jerome meriweather
	AFT OverHead Glareshield Forward Pedestal
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Autobrake Knob

RTO - Arms the Autobrake system to provide maximum braking for a rejected takeoff when the Throttles are retarded to idle above 85 knots. Selector moves to OFF on liftoff. System disarms and selector remains in RTO if:
- Brake pedals are pushed.
- Throttles are advanced.
- Speed brake lever is moved to DN detent after speed brakes have deployed on the ground.
- A fault is detected in the antiskid, Autobrake or normal brake system.
OFF - Disarms and resets the system.
Disarm - Disarms Autobrake system and releases all auto brake pressure to the wheels.
1, 2, 3, 4, MAX Auto - Selects increasing Autobrake deceleration rates for automatic braking on touchdown. Autobraking occurs when ground mode and wheel spin are sensed and the throttles are retarded to idle. System disarms and selector moves to DISARM for same conditions which disarm RTO mode.