During emergency braking, is it advisable to use the normal braking system for optimal braking power?

• A. Yes
• B. No
• C. Only when dry runways
• D. Always when emergency

Answer: (B)

During an emergency you want the maximum possible deceleration, and the emergency braking function is designed to deliver that. The normal wheel-brake system works with anti-skid and depends on specific hydraulic pressure and normal operating logic, which can limit braking power in a high-demand situation. The emergency braking mode taps the available hydraulic sources and braking aids to provide the greatest braking effort, so relying on the normal system alone won’t give you the best stopping performance. Engage the emergency braking system to achieve the highest deceleration, and be prepared for a more abrupt stop and the need to maintain directional control.