If the evacuation horn sounds unintentionally, what is the appropriate action?

• A. Silence the horn
• B. Ignore it
• C. Reset it
• D. Disable it

Answer: (A)

When the evacuation horn sounds, it’s a real safety cue meant to start an orderly evacuation if there’s an actual emergency. If it goes off unintentionally, the priority is to stop the audible signal to prevent panic and an unnecessary evacuation. Silencing the horn removes the alarm so you can safely assess the situation and confirm there isn’t a genuine threat. After silencing, investigate for faults in the evacuation system, check for indicators of an actual emergency, and follow the aircraft’s SOP or QRH to determine the next steps. It isn’t appropriate to ignore the sound, and resetting or disabling the horn without proper verification could cause confusion or leave the system in an unsafe state. So, silence the horn first, then proceed with fault diagnosis and necessary follow-up.