Sikorsky S-76B



The Sikorsky S-76B is an American medium commercial helicopter built by Sikorski. The S-76B is powered by two turboshaft engines, has a four-bladed main rotor, a four-bladed tail rotor and retractable landing gear.

The S-76B is the second model Sikorski designed for the civilian market, particularly for business flights. The design was first given the designation S-74, but that was changed to S-76 as a tribute to the "bicentennial" in 1976 (the 200th anniversary of the U.S. Declaration of Independence). The aircraft was then also given the nickname Spirit, but this was dropped after a few years. The helicopter was designed to carry 12 people, which is the typical number of a crew being flown to an oil rig. The prototype flew for the first time on March 13, 1977. This was equipped with two Allison 250C30 turbines of 478 kW each