Which country for the first time conducted a successful flight test of the MGTD-20 gas turbine engine made by 3D-printing?

Which country for the first time conducted a successful flight test of

1.	Which country for the first time conducted a successful flight test of the MGTD-20 gas turbine engine made by 3D-printing?
Answer» The Russian Foundation for Advanced Research Projects in the Defense Industry informed that Russia for the first time conducted a successful flight test of the MGTD-20 gas turbine engine made by 3D-printing.