What turns on the emergency signaling system?

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Multiple Choice

What turns on the emergency signaling system?

Explanation:
Activating the emergency signaling system is done with the Evac CMD switch in the cockpit. This switch arms the system so the crew can issue evacuation commands to the cabin and enable the related alerts and announcements (the evacuation PA and associated signaling). The other options don’t specifically turn on the ESS: the plain CMD is not a targeted ESS control, EMERGENCY is a general alert label rather than the dedicated activator, and the FAP (Flight Attendant Panel) handles cabin calls but does not arm the cockpit’s emergency signaling. So, the Evac CMD switch is the dedicated control that turns on the emergency signaling system.

Activating the emergency signaling system is done with the Evac CMD switch in the cockpit. This switch arms the system so the crew can issue evacuation commands to the cabin and enable the related alerts and announcements (the evacuation PA and associated signaling). The other options don’t specifically turn on the ESS: the plain CMD is not a targeted ESS control, EMERGENCY is a general alert label rather than the dedicated activator, and the FAP (Flight Attendant Panel) handles cabin calls but does not arm the cockpit’s emergency signaling. So, the Evac CMD switch is the dedicated control that turns on the emergency signaling system.

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