"Grand Theft Auto IV" is an action-adventure video game published by Rockstar Games for the PlayStation 3. In the game you are Niko Bellic, who has become tangled in the criminal underworld. You can leave the story aside at any point to explore the expansive landscape. To do this you can use a variety of vehicles including, cars, monster trucks, tanks and helicopters. By accessing the cheats menu you can have a helicopter spawn directly on your location.
Access the cheat menu by pressing the "up" directional button to display Niko's cell phone. Once in the cell phone menu, pressing "up" a second time will bring up a keypad. You can then use the keypad to enter codes and unlock weapons, heal health, lose your wanted level and unlock vehicles, including a helicopter. Once you have correctly entered a cheat, a new "Cheats" menu will appear in the cell phone where you can reactivate previous cheats without typing the code again.
Annihilator Police Helicopter
Enter the code "3595550100" in the cheats menu on the cell phone. This will spawn a Annihilator Police Helicopter on your location. The Annihilator comes fully armed with rockets.
If you have "The Ballad Of Gay Tony" bonus downloadable content you will be able to access the Buzzard Helicopter. Enter the code "3595552899" in the cheats menu on the cell phone to have a Buzzard Helicopter spawn for you.
Note that the first three digits of each code "359" translates to "FLY" on a cell phone keypad. For example the code for the Annihilator Police Helicopter translates to "FLY-555-0100."