JoBuilt's Mammatus is the GTA universe's Cessna 172, fitting since the real 172 is the most produced aircraft in history. It returns from GTA V, confirmed for GTA 6 through official screenshots, with four seats listed in the files. Expectations should match the source material: slow, stable and forgiving, the plane you learn on before graduating to something reckless.
No confirmed acquisition route. Light planes like the Mammatus have historically been parked at small airfields for the taking or sold cheaply by aircraft dealers, and either fits. Unconfirmed until Rockstar says otherwise.
Official screenshots confirm it for GTA 6.
The community companion for Grand Theft Auto VI. Database, maps, guides and tools for Vice City and the state of Leonida.