I guess most of you will have seen this:
Sikorsky considers Ukrainian engines for S-61 upgrade
Sikorsky considers Ukrainian engines for S-61 upgrade
Ukrainian gas-turbine maker Motor Sich has held talks with US rotorcraft
company Sikorsky over the possible installation of its engines in the
Sikorsky
S-61 helicopter, Motor Sich director Vyacheslav Boguslayev says.