This is the Bleriot XI addon for the game FlightGear
The Bleriot XI was a light and sleek monoplane constructed of oak and poplar. The flying surfaces were covered with cloth. The original XI was designed and built in 1908.
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.