The First And Only Flight Of The Russian Space Shuttle.

Test Flights:

The first suborbital test flight of a scale model of Buran took place in July 1983. There were five additional flights of the scale model in following years. Aerodynamic tests of the full-scale Buran analogue began in 1984. This aero-Buran was worn out after 24 test flights and would not fly again. The last of these aerodynamic test flights was in April 1988. LINK