Third Sikorsky S-76D prototype flies

The third S-76D prototype “recently” made its first flight, Sikorsky has announced, with the helicopter to serve as the primary vehicle for avionics and electrical system certification for the S-76D program.

Dubbed ‘D3’, the third Pratt & Whitney Canada PW210S powered S-76D prototype will begin certification testing during the fourth quarter of this year, alongside S-76D development machines D1 and D2.