Board Thread:Questions and Answers/@comment-73.35.140.143-20140811021817/@comment-24170389-20140815154302

73.35.140.143 wrote: I guess the Ace is banned on the Mountains because it would easily fall off from the mountain and ultimately crash into the ground. On top of that, it would look silly to see an airplane flying downwards. A complement - Since it's a place with high altitude, it has clouds, and it might be hard to see or fly, thus, causing a crash.