Large windows were found to weaken the structure of planes making them unsafe…
The de Havilland Comets were the first passenger jet airliners. They had large windows that allowed passengers a panoramic view of the outside. A series of aircraft crashes in 1954 led to an investigation it was found that weakening of the metal at the corners of the windows was causing a weakening of the whole structure of the plane, causing it to give way during flight.
The crashes stopped when the windows were re-designed Since then windows in all aircraft have been kept as small as possible. They are generally about 33cm high and have three panes-two pressure panes and one interior pane-that are contained in a window unit that is fastened and sealed to the aircraft structure.
Picture Credit : Google
