Aircraft overview

The Sikorsky S-76 is a medium twin engine helicopter developed by Sikorsky Aircraft for corporate transport, offshore energy support, emergency medical services and government missions. The prototype first flew in 1977, with customer deliveries beginning in 1979. Production continued for more than four decades, with major variants including the S-76A, S-76B, S-76C, S-76C+, S-76C++ and S-76D. Its importance in the used market comes from its combination of IFR capability, retractable landing gear, a dedicated passenger cabin and broad global operator support.

Performance & specifications

Performance depends on variant and equipment, but later S-76C series aircraft typically cruise around 150 to 155 knots. Published range is commonly around 400 nautical miles, subject to reserves, payload and auxiliary fuel configuration. Maximum operating altitude is generally listed at 15,000 feet. Maximum takeoff weight is 11,700 lb on many S-76C series aircraft, with useful load varying materially by interior, avionics, mission kit and service bulletin status. Powerplants differ by model: early S-76A aircraft used Allison 250 series engines, the S-76B used Pratt & Whitney Canada PT6B engines, S-76C variants used Turbomeca, now Safran, Arriel engines, and the S-76D used Pratt & Whitney Canada PW210S engines.

Cabin & avionics

The S-76 has a separate cockpit and cabin, with typical seating for 6 to 8 passengers in executive layouts or up to 12 passengers in utility and offshore configurations. Large sliding cabin doors, a flat floor and baggage capacity make the type adaptable for corporate, EMS and crew transfer roles. Avionics vary widely by year. Older aircraft may have analog or early EFIS panels with Collins, Honeywell or Sperry equipment, while many used examples have GPS, transponder, radio and display upgrades such as Garmin GTN navigators. The S-76D introduced the Thales TopDeck integrated avionics suite and a modern four axis autopilot.

Buying & value

Prospective buyers should compare variant, engine program status, component times, corrosion history, offshore exposure, damage history, avionics standard and compliance with Sikorsky service bulletins. The S-76C+ and S-76C++ are common choices where acquisition cost, parts availability and capability are balanced, while the S-76D offers newer systems at a higher capital cost. Values are strongly affected by mission equipment, interior condition, remaining life on dynamic components and whether the aircraft is configured for corporate, EMS or offshore operations.