Scamp

The Scamp was a vehicle cut from Grand Theft Auto V. The only remnants of this vehicle are handling files which can be found in the game's internal files.

As seen in its handling data, it was an aircraft with a similar mass to some small aircraft, such as the Duster, the Mammatus, etc. Although this is unconfirmed, it is quite possible that the Scamp would have been the name for the unknown high-wing airplane, which was dropped from the game during development.