Australians taking the sky for the first time since the Covid pandemic ended are noticing the tiny 'hole' on their plane windows for the first time - and have questioned what it does. Known as the 'bleed hole' the tiny opening in the window of commercial passenger planes is actually an important safety feature, according to aviation experts.The hole helps to regulate how much pressure from the cabin is exerted onto the window's panes and it makes sure that if the window is going to break, the outer pane goes first.
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