THEIR IS A BUG IN THE AUCKLAND 2005 SCENERY FILES WHICH CAUSES THE AIRCRAFT WHEELS TO SINK WHEN TAXIING NEAR THE AUCKLAND INTERNATIONAL TERMINAL .. THE CURE FOR THIS IS TO DELETE FROM THE SCENERY DIRECTORY , THE FILE CALLED NZAA-FS2002-SMOOTH.BGL. THIS WAS AN OLD FIX FILE FOR FS2002 BUT IS DEFINITELY CONFLICTING WITH THE FS2004 HYBRID SCENERY SO PLEASE ENSURE THAT YOU DELETE IT ....[/quote]
From the readme

Just delete the file NZAA-FS2002-SMOOTH.BGL in the scenery folder of NZAA (usually under ..\Addon Scenery\Auckland 2005).