It's not something many people know about, but airliners have horns, just like cars!
For instance, pilots have a horn switch on the overhead panels of the Boeing 737 family.
But, unlike cars, pilots don't use them to warn other vehicles to get out of their way.
So, why do planes have horns, and how often are they used?
Let's find out.
First things first, the aircraft horns don't sound at all like your traditional car horn.
Instead, it sounds more like an alarm, and it is kind of annoying!
In May 2019, KLM Royal Dutch Airlines published a video demonstrating the sound of an airliner's horn.
As described by the airline itself, when the button is pressed, "it sounds as if three steamboats are passing under the plane." All airplanes have a ground call button, which is similar to a horn, KLM added.
This is a tiny switch on the overhead panel, next to the switch pilots use to contact cabin attendants.
