
In order to change a callsign you must open the aircraft.cfg file with an editor, such as notepad. Scroll down to the section:
atc_heavy=0
atc_airline=(Add Airline Name)
atc_flight_number=(Put in , if applicable)
Next you would go to the aircraft main folder and find the file Airlines.cfg file and open it with an editor and add you airline to the list.
This will get it to show up in the visual part of the ATC window of FS2002. If the name is not audibly givwn then you would have to get a program called Editvoicepack, which would enable you to add the audible name to your list.
Hope this wasn't to confusing.
