 The tram were delivered in 1955.It remained in service until 1973, when it was replaced by the TS Class 7 trams, following the merger of Graakalbanen into Trondheim Trafikkselskap, and the subsequent reorganizing of routes, so the Gråkallen Line was operated onwards along the Lademoen Line.It is preserved as a heritage tram at Trondheim Tramway Museum.