Czechoslovak State Railways
The second prototype (TL 659.002) was built with lessons learned from the first. It left the factory in March 1960 and was the only turbine locomotive to pass the tests for regular service on tracks of the former Czechoslovak State Railways. It was tried near Kolín and Plzeň with mixed results. This engine was taken out of service in April 1966 and sold to the University of Žilina as an educational instrument. It was scrapped some time later.