 The IATA callsigns are currently used in aerodromes on the announcement tables but never used any longer in air traffic control.For example, AA is the IATA callsign for American Airlines – ATC equivalent AAL.Other examples include LY/ELY for El Al, DL/DAL for Delta Air Lines, VY/VLG for Vueling Airlines, JL/JAL for Japan Airlines, NH/ANA for All Nippon Airways, etc.