Air New Zealand only briefly operated the "Wisper Jets" BAE-146 200s and 300s for less than a year between 2001 and 2002 after acquiring them through changes of ownership with the collapse of Ansett New Zealand who had replaced their fleet of the older and noisy Boeing 737 -100 aircraft, due to airport noise restrictions during the late Eighties - early Nineties. These were replaced with the new and quieter BAE-146 aircraft.Ansett New Zealand
which was a wholly owned airline subsidiary of Ansett Australia, serving the New Zealand domestic market between 1987 and 2000.
If your wanting repaint liveries done in the fictional Air New Zealand schemes recommend NZFF member Adamski's Repaints Civil Airliners+Others
Otherwise try searching on QW Ultimate 146 Collection repaints