You’re buckled in, tray table up, ready for takeoff, when you glance out the window and spot something strange: a tiny hole in the glass. Cue the panic. Is the window broken? You’re not alone ...

Breather hole between inner and outer window of airplane to adjust the air pressure and to drain the humidity. Image Credit: Michael Mong / Shutterstock You’re buckled in, tray table up, ready ...

You’re buckled in, tray table up, ready for takeoff, when you glance out the window and spot something strange: a tiny hole in the glass. Cue the panic. Is the ...