A helicopter (informally called "chopper" or "helo") is a type of rotocraft in which lift and thrust is supplied be engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and the fly forwards, backwards, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft wouldn't be able to take off or land. The capability to efficiently hover for extended periods of time allows these vehicles to accomplish tasks that a fixed-wing aircraft and other forms of vertical takeoff and landing aircraft cannot preform.
- Wikipedia has a article relating to "helicopter".
In the Grand Theft Auto series, helicopters are one of the types of vehicles that the player can control. Below lists some of the flyable helicopters in GTA Vice City.