It’s always been like this. If you enter the callsign from the world map flight planner menu, it will make everything upper caps and the ATC will interpret them as abbreviation “N E W”.
Usually, if livery designers are meticulous, they should have added the proper callsign “New Zealand” inside the livery aircraft.cfg file. To use this, you need to clear the callsign field in the world map menu. It needs to be blank. That way, the sim will do a “fallback” procedure where if the one from the world map menu is blank, it will fallback to use the one from the livery aircraft.cfg file instead.
Try this method first, if that doesn’t work, you might need to do a bit of aircraft.cfg editing on your Air New Zealand livery. Open it with notepad or notepad++, and look for the atc_airline field. You can change it to look like this:
atc_airline = "New Zealand" ; airline name
This way, the sim will not treat it as an abbreviation because it’s not all upper caps, and will give you the proper callsign as “New Zealand”. See this video for proof. My callsign is New Zealand 4316. See how the ATC calls me properly when they cleared me to land the same way the ATC calls the other New Zealand traffic properly as well.
