✈️ If you’ve ever sat by the window on a flight, you’ve probably noticed it: a tiny little hole at the bottom of the airplane window. Most people never think twice about it—or assume it’s just part of the design. But the truth is, that little hole has a very important job.
🛑 No, It’s Not a Mistake
Airplane windows aren’t made of just one piece of glass—they’re built with three layers of acrylic panes:
The outer pane (the strong one that handles the outside pressure).
The middle pane (the backup, in case of failure).
The inner pane (the one you touch).
And that tiny hole, called a “bleed hole,” sits in the middle pane.
