The brightly coloured internal layer present in sure aviation jackets serves an important function past mere aesthetics. This vibrant hue, typically a selected shade of worldwide orange, was chosen for its excessive visibility. A downed pilot, significantly in difficult terrain or water, may reverse the jacket, exposing the conspicuous colour, considerably growing the possibilities of being noticed by rescue personnel.
This sensible design function turned a trademark of military-issued flight jackets, particularly in the course of the mid-Twentieth century. The improved visibility provided by this contrasting internal layer supplied an important security measure for aviators working in hazardous situations. 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 army and civilian aviation contexts.