Airship Fortress is the last track of the Star Cup in Mario Kart DS. It is the only track that features Bullet Bills as Hazards. These Bullet Bills are fired toward the racers, and makes the character flip over and drop their item. The course only features one dash panel. Some wooden boxes can be hit to see if they drop a Mushroom or a Banana, and they are just like the boxes in Delfino Square, but they don't drop always drop an item 100%. CPU racers always ignore them. There are also Rocky Wrenches that pop up and some flames to also serve as obstacles. The Rocky Wrenches can be KOed if you crash into them with a star. There is also a cannon which launches the racers in a spiral tower. At the end, there is one side where it is open, and racers can be knocked off the edge and lose time. Missions 6-2 and 7-7 take place here. Mission 6-2 features Wario having to run over 15 Rocky Wrenches with stars. Mission 7-7 features Bowser driving backward to collect 12 coins. This course belongs to Bowser in the Tyrant, and can't be played on the game's online mode.
Airship Fortress reappears in Mario Kart 7 as the third course of the Lightning Cup. The Bullet Bills have been changed to Banzai Bills and the ship's interior has been changed, and in the beginning of the track you can now drive on the ledge to avoid banzai bills.
This track is inspired by the Airship levels from Super Mario Bros. 3.