max takeoff 4672kg (10， max takeoff 5307kg (11，300lb). S76C+ - Empty (executive configuration) 3691kg (8138lb)， a quiet tail rotor with curved blades， an active noise and vibration control system， Details Country of Origin United States of America Type Mid size utility helicopter History Sikorskys S76 is a popular mid size corporate and oil rig support helicopter.Sikorsky began development work on the S76 (for a time named Spirit) in the mid 1970s and used technologies and experience gained from the military S70 Black Hawk program. The resulting S-76A was powered by two Allison 250C30S turboshafts and could seat 12. First flight was on March 13 1977 and FAA certification was awarded in November 1978.The first improved model was the S76 Mark II (introduced in March 1982) with more powerful Allison engines and 40 detail refinements. The S76B is powered by two Pratt Whitney Canada PT6B36s (the 101st and last B was due to be delivered in December 1998)，1.76英雄合击， 43 S76Cs and 35 S-76C+s. Over 70 S76As converted to S76A+ standard. Related Links Sikorsky S-76 The backbone of this section is from the TheInternational Directory of Civil Aircraft by Gerard Frawleyand used with permission. To get your own copy of the bookclick here. ，000ft. Range with 12 passengers， long range cruising speed 232km/h (125kt). Initial rate of climb 1350ft/min. Service ceiling 15， cruising speed 269km/h (145kt). Initial rate of climb 1625ft/min. Hovering ceiling out of ground effect 1800ft. Range at 259km/h (140kt) with reserves 813km (439nm). Weights S76 Mk II - Empty (standard equipment) 2540kg (5600lb)， standard fuel and reserves 748km (404nm)， auxiliary fuel and reserves 1112km (600nm). S76C+ - Max speed 287km/h (155kt)， length overall 16.00m (52ft 6in)， comprising 284 S76As， height overall 4.41m (14ft 6in). Main rotor disc area 141.3m2 (1520.5sq ft). Capacity Flightcrew of two. Max seating for 12 or 13 passengers at 79cm (31in) pitch in oil rig support aircraft. VIP configurations offered in six or eight passenger seat form. EMS configured aircraft accommodate one or two stretchers and four medical attendants. Production Total S76 production in late 1998 of approximately 480。

with eight passengers， fuselage length 13.22m (43ft 4in)， and an advanced health and usage monitoring system. A three LCD screen integrated instrument display system (IIDS) for engine and rotor information is now standard， supplementing the four screen Honeywell EFIS suite. Powerplants S76 Mk II - Two 485kW (650shp) takeoff rated Allison 250C30S turboshafts driving four blade main and tail rotors. S76C+ - Two 638kW (856shp) takeoff rated Turboméca Arriel 2S1s. Performance S76 Mk II - Max cruising speed 287km/h (155kt)，700lb). Dimensions Main rotor diameter 13.41m (44ft 0in)， 17 S76A+， 101 S76Bs， while the S76C is powered by two Turboméca Arriel 1S1 engines. The S76A+ designation covers undelivered S76As subsequently fitted and delivered with Arriel engines， and S76As converted to Arriel power.Current production is of the S76C+ with 18% more powerful FADEC equipped Arriel 2S1 engines. Certification of the C+ was awarded in mid 1996. Forthcoming improvements include composite blades，。