The brightly coloured internal layer present in sure aviation jackets serves a vital objective past mere aesthetics. This vibrant hue, typically a selected shade of worldwide orange, was chosen for its excessive visibility. A downed pilot, notably in difficult terrain or water, might reverse the jacket, exposing the conspicuous colour, considerably growing the probabilities of being noticed by rescue personnel.
This sensible design characteristic turned an indicator of military-issued flight jackets, particularly in the course of the mid-Twentieth century. The improved visibility supplied by this contrasting internal layer offered a significant 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 characteristic continues to be valued in each navy and civilian aviation contexts.