I'm sorry, but as you can clearly see from my screenshot, the airplane is perfectly planted on ground.
Of course, you should first always check with a default airplane and, if the problem is still there, you should check for another scenery or AFCAD in conflict.
On FS9, you can use the free ScanAFD program to find AFCAD duplicates for an airport. You need to remove all the extra, except the default one and the one that comes with our scenery.