Tiny yet important: Know why aeroplane windows have holes

Many of us must have travelled in aeroplane and have come across the tiny holes on the windows of the aircraft. Have you ever wondered why these tiny holes are there? Have you ever realised what crucial role they play for the safety of the aircraft? Here is all you need to know about the tiny yet one of the most important part of the flight.

Generally, the flights fly at more than 30,000 feet altitude. The tiny holes known as bleed holes are specially designed to maintain air pressure inside the cabin of the plane at the higher altitude.

The flight windows are made up of three separate panes. While the outer pane of the window handles the air pressure difference, the middle pane has the bleed hole. 

The middle pane balances air pressure. It plays an important role in balancing cabin pressure and the air gap. Besides, it also helps release the moisture from the air gap restricting the mist to settle on the aircraft  windows.

The third or the inner pane of the flight windows are used to protect the outer and middle panes from any damage by passengers.