When should the horn shut-off switch be turned off?

When should the horn shut-off switch be turned off?

• A. When the last crew member leaves
• B. After every detour
• C. During every climb
• D. Only when the door is closed

Answer: (A)

The switch is used to silence the audible warning horn once the aircraft is no longer occupied. The proper time to turn it off is when the last crew member leaves, so the cockpit and cabin aren’t spurred by alarms while the aircraft is unattended. This keeps the environment quiet for ground operations and prevents nuisance horns after everyone has exited. It isn’t tied to detours or climbs, and turning it off just because a door is closed isn’t sufficient—the key moment is securing the aircraft by having no crew left aboard.

The switch is used to silence the audible warning horn once the aircraft is no longer occupied. The proper time to turn it off is when the last crew member leaves, so the cockpit and cabin aren’t spurred by alarms while the aircraft is unattended. This keeps the environment quiet for ground operations and prevents nuisance horns after everyone has exited. It isn’t tied to detours or climbs, and turning it off just because a door is closed isn’t sufficient—the key moment is securing the aircraft by having no crew left aboard.