The S-76D features an upgraded main rotor. Composite materials were used in the manufacture of the blades. The main and tail rotors are equipped with an anti-icing system for starting at low temperatures. The Canadian company Pratt and Whitney developed the PW210S engines for the S-76D. They provide significant power, range, and payload mass and economical fuel consumption. The S-76D helicopter is equipped with Thales TopDeck integrated avionics.