радіообмін шифрограмами
cipher
cipher cable
cipher group
cipher work
break а cipher
cipher clerk
cipher code
cipher device
cipher key
cipher message
cipher office
cipher system
cipher text
in cipher
transpose into cipher
air traffic clearance
air traffic control centre
air traffic control operator
air traffic control procedures
air traffic control radar
air traffic control service
air traffic flow management (ATFM)
air traffic management (ATM)
air traffic management centre (ATMC)
air traffic service (ATS)
air traffic signalling system
airspace and traffic management
communications traffic
division traffic control headquarters
International Traffic in Arms Regulations (ITAR)
Main Air Traffic Flow Management Centre (MATFMC)
maritime traffic