Grand Theft Auto: San Andreas Easter eggs

Controllable AT-400
After you've unlocked Las Venturas,go to the LV airport and find the biggest garage near the runway.You can enter this garage.You will find an AT-400 airliner.The AT-400 plane can fly upto a huge height amongst all the planes.NOTE:If you leave the plane after you've taken it out of the garage,you cant get inside it again as it has a little longer length.Hope you try the trick