What action is taken to sound the evacuation horn during evacuation initiation?

• A. Shout evacuation commands
• B. Use interphone to call the captain
• C. Evacuate passengers without instructions
• D. Announce "EVACUATE" on the PA and press Evac CMD to sound the horn

Answer: (D)

Initiating evacuation signaling follows a formal alert sequence. The best approach is to announce EVACUATE over the public address system and then activate the Evac CMD to sound the horn. The PA message immediately informs everyone in the cabin that an evacuation is commencing, setting the expectation to evacuate. Pressing the Evac CMD triggers the horn and related warning signals in a controlled, synchronized way, ensuring a clear, audible alert for all occupants.

This approach relies on a standardized procedure rather than spontaneous shouting, which can be noisy and misheard, or using an interphone to contact the captain without triggering the horn. Evacuating without clear instructions is unsafe. So combining a formal PA announcement with the dedicated evacuation command is the correct, safety-focused method.