During evacuation, which action is performed by the Pilot Flying when the EMER/PARK BRAKE is commanded?

During evacuation, which action is performed by the Pilot Flying when the EMER/PARK BRAKE is commanded?

• A. ENGAGE emergency parking brake
• B. RELEASE parking brake
• C. ACTIVATE emergency exit lights
• D. DISABLE parking brake

Answer: (A)

During an evacuation, the aircraft must be kept securely in place so evacuees can exit safely without the airplane moving. The action tied to the EMER/PARK BRAKE in this scenario is to engage the emergency parking brake, which applies the main-wheel brakes and locks the aircraft stationary. This prevents any unintended movement while doors are open and people are evacuating. Releasing the brake would undo that security, activating emergency exit lights is a separate system, and disabling the parking brake would allow movement, defeating the purpose of the procedure.

During an evacuation, the aircraft must be kept securely in place so evacuees can exit safely without the airplane moving. The action tied to the EMER/PARK BRAKE in this scenario is to engage the emergency parking brake, which applies the main-wheel brakes and locks the aircraft stationary. This prevents any unintended movement while doors are open and people are evacuating. Releasing the brake would undo that security, activating emergency exit lights is a separate system, and disabling the parking brake would allow movement, defeating the purpose of the procedure.