First, please buckle your seat belts, don’t spill your popcorn, and keep your baby asleep, fellas. The flight is just about to take off.
If you have ever noticed the tiny little hole around the bottom of the aeroplane window and thought that this glass is faulty and it’s going to break off as the plane takes off but then you managed to see a similar itsy-bitsy hole on another window and told yourself that ” I won’t panic as everyone else is not panicking” and ” I will just ignore this hole and sleep”
Now, if you have survived that flight of yours ( LOL), this is your chance to know about that Tiny hole in the Aeroplane Window. It turns out that this hole, which sometimes forms frost around it, is a very important safety feature. Technically, this tiny hole, which is on every single window on the airplane is known as the breather hole and it’s purpose is to regulate the amount of air pressure that passes between the window’s inner and outer panels.
At speeds, hundreds of km per hour and over 50,000 feet in the air, this pin-sized hole ensures that the outer glass panel bears the most pressure so that if there comes a situation that causes added strain in the window, it’s the outside panel that gives out, still letting us breathe.
The plane windows are made up of three glass panels from inside. The outer and middle ones effectively resist the variance in pressure between the cabin and the atmospheric pressure outside, with the breather hole making it sure that only the outer panel withstands the massive pressure.
Consequently, there is effectively a pair of glass panels on the outside – one facing outside and another in between this and the inner panel – thus forming a pretty safe and unbreakable window.