international telecommunication service
міжнародна служба телезв’язку
міжнародна служба телезв’язку
aeronautical telecommunication service
airline telecommunication and information service
panel on aeronautical fixed telecommunication in Europe
aeronautical telecommunication network panel
international humanitarian law (See international law of armed conflict)
International Military Sports Council (IMSC) / Conseil International du Sport Militaire (CISM)
International Air Service Transit Agreement
International Aviation Weather Service Programme
international earth rotation service
scheduled international air service
branch (military/service branch, armed service)
separate from active service / the service
Y service (Y-service) / Y-station
regional meteorological service/ regional weather service (RWS)