Shamal
The Shamal is an aircraft based on the Learjet 35 (minus the tip tanks), and is one of the easiest aircraft to control. The Shamal first appeared in GTA III and then GTA: Vice City; however, the player could not fly the plane. The first time the player could fly the Shamal was Grand Theft Auto: San Andreas. The plane's interior can be seen during the mission Freefall and, despite its interior size, can only transport Carl Johnson. The interior view also shows seven windows, yet when viewed from the outside, only four are visible. The Shamal can be found at Los Santos International Airport, Easter Bay International Airport and Las Venturas Airport. It is always seen unmarked.
In GTA IV, the Shamal is no longer a flyable aircraft, as mentioned by Rockstar Games. It can be found at Francis International Airport, and features an updated design.