No-Fly Zone

A No-Fly Zone is an area in the Grand Theft Auto series that the player isn't supposed to fly over. Sometimes, no-fly zones are protected by ground weapons, such as surface-to-air missiles or sometimes by guards. No-fly zones are the same as restricted areas.

List of No-Fly Zones
Grand Theft Auto: Vice City Grand Theft Auto: San Andreas
 * Fort Baxter Air Base- A military base located in the Escobar International district of Vice City. If the player flies a helicopter or the Skimmer over the base, while not wearing the cop uniform, the soldiers on the ground will attack the player's aircraft.
 * Area 69- A secret military base located in the heart of Bone County. The player will recieve a 5-star wanted level if the player flies over the area. Also the player will be attacked by SAM sites.
 * Easter Basin Naval Station- A military port located in Easter Basin, San Fierro. The player will recieve a 5-star wanted level if the player flies over the area. Also, the player will be attacked by SAM sites.