The brightly coloured internal layer present in sure aviation jackets serves an important goal past mere aesthetics. This vibrant hue, usually a selected shade of worldwide orange, was chosen for its excessive visibility. A downed pilot, notably in difficult terrain or water, may reverse the jacket, exposing the conspicuous shade, considerably rising the possibilities of being noticed by rescue personnel.
This sensible design function turned a trademark of military-issued flight jackets, particularly throughout the mid-Twentieth century. The improved visibility supplied by this contrasting internal layer offered an important security measure for aviators working in hazardous circumstances. Its adoption displays a broader emphasis on pilot security and survival, underscoring the significance of readily identifiable alerts in emergency conditions. This function continues to be valued in each navy and civilian aviation contexts.