Cabin windows
Hi Philltowns
Most cabin windows consist of three individual panes. On the inside there is usually a plastic or similar material clear pane, used to protect the inner glass pane from being scratched, for example by a diamond ring worn by a passenger. A high strength glass pane is next and then a secondary glass pane as a back up to the primary pane. Small vent holes allow equalisation of pressures. There is of course, a pull down blind built into the window surround panel to keep out light if required. Cockpit windows on the other hand are usually very thick laminate windows with a flexible laminate nearer to the outer pane. They are also, in many cases, heated to prevent frosting from impeding vision.