Traffic appears at airport - does not land

Hi all,
I have an AI Air New Zealand 767-300 fly from Auckland to Perth (Australia) (real route), but the plane just appears at the airport when it approaches it's arrival time. It does not appear in the air space and land. I don't know if it has to do with the distance between the airports as AI traffic does work normally with closer airports. What's happening???
Thanks!
I have an AI Air New Zealand 767-300 fly from Auckland to Perth (Australia) (real route), but the plane just appears at the airport when it approaches it's arrival time. It does not appear in the air space and land. I don't know if it has to do with the distance between the airports as AI traffic does work normally with closer airports. What's happening???
Thanks!