Like the other planes, it can also be seen flying in the distance, but it is hard to take down the flying AT-400, even with homing rockets; the plane is also used for paid commercial flights between cities in San Andreas. As a controllable vehicle, the plane is considerably rare, appearing in only one location, inside the large airport hangar in Las Venturas Airport in Las Venturas.
Being a large commercial jet, the AT-400's large size and sluggish response makes it harder to land than the other planes in the game. The plane also features other unique features. A primary disadvantage to this plane is once you land and get out you can't get back in because the door is very high from the ground. The only way you can get back in it to find a Baggage with a ladder attached to the back, land the plane at Las Venturas Airport and go to the hangar again, or find a Yankee and jump over it, using its back side as a platform. The AT-400 is also only one of two aircraft that can fly to the maximum height in the game, the other being the Hydra. Unlike most other planes, this plane is also the only one that can be flown over Area 69 with less chance of being shot down by homing missiles, providing you don't hang around.
- The AT-400 is the biggest vehicle in the game, the next biggest is the Andromada. Interestingly enough, when comparing their real life counterparts the cargo plane (Andromada) is actually bigger than the passenger jet (AT-400).
- AT-400's are white and different color, but players may come across a unique AT-400 which is dark and different color.
- The AT in AT-400 may stand for Air Train as the large plane in Vice City which is called the Air Train also. The Air Train was going to appear in San Andreas.