1. Xplane 9.
This game is the best game i have on my ipod, and probably the most powerful one. Its a flight simulator that used to cost £5.99 but now its only £2.99!!! It has good graphics, a range of areas, planes and runways. You can go multi player and change lots of settings on it. The best thing is you control the plane by tilting the ipod/iphone. Brilliant
2. F-SIM Shuttle
This game involves landing a space shuttle. This is a good 'tutorial' app for learning to use Xplane better. This game focuses on landing, and you can start lined up with the runway, so all you have to do is bring the shuttle down and land it, or you can start in the air, so you have to steer the plane to align it with the runway then land it. One thing this has that Xplane doesn't is ATC (air traffic control). A voice tells you when to turn, how far you are from the ground and when the wheels go down. After, you are scored on your landing.
There is also a video of a good landing, so you can watch it to help you land