This is the Cessna 182 addon for the game FlightGear
The Cessna 182 Skylane is an American four-seat, single-engine, light airplane. It has the option of adding two child seats, installed in the baggage area.
To install this aircraft, download the .zip archive to your local hard drive, and extract them into your Aircraft folder. For windows users, this will be located in C:\Program Files\FlightGear\data\Aircraft.