This aircraft was constructed by Hughes back in October 1969. It was first registered in Germany, but later left for Finland and Norway. It ended up in Sweden, purchased by Heli AB, in 1987. It was incorporated in Sterner Aero's fleet in 1989, and was eventually included in Heliflyg as the big joint company was established.

SE-HSD was exported to the US in October 1993. As of October 2017 the aircraft is still operating in the US as N521TC.

However, a detached tail boom marked SE-HSD was noted at the PS Aero Collection in Baarlo, The Netherlands, on 30 September 2017.