What is the standard emergency signal to evacuate on board?

• A. An explicit evacuation command issued by the PIC or cabin crew.
• B. A general alarm heard by cabin crew only.
• C. A whistle from the head of the cabin.
• D. A written message posted on the cabin wall.

Answer: (A)

The signal to evacuate is an explicit command given by the person in charge or by cabin crew. This clear instruction starts the evacuation immediately, coordinating door actions, slide deployment, and passenger movement so everyone knows exactly what to do and where to go. An alarm alone doesn’t tell passengers to evacuate or specify timing, and other signals like a whistle or a posted message don’t provide the immediate, authoritative direction needed in an emergency.