Glossary Aviation TermsAll | # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z There are currently 4 terms in this directory beginning with the letter N.NailsBrevity code for radar detected in search mode.NATONorth Atlantic Treaty Organization.NDANon-disclosure Agreement.NVG Night-Vision Goggles, a device that amplifies light for night operations.