The Sikorsky S-76D is a modern, medium twin-engine helicopter built for executive transport, offshore passenger logistics, instrument flight rules (IFR) missions, and utility work. This aircraft delivers excellent flight handling across many sectors. It is a top choice for missions that require speed, passenger comfort, and proven twin-engine reliability.
The S-76D stands out in its class by mixing a reliable frame with a quiet, smooth passenger cabin. It features advanced avionics, a composite main rotor system, and powerful Pratt & Whitney Canada PW210S engines. These features separate the aircraft from older models, lowering fuel use and boosting real-world flight capabilities.
Table of Contents
- Aerodynamic Profile and Design Evolution
- Engine Performance and Propulsion Efficiency
- Exterior Dimensions and Weight Limits
- Cruise Velocity and Operational Range
- Interior Layout and Operational Utility
- S-76D Core Specifications
- S-76D Engineering and Design Verdict
Aerodynamic Profile and Design Evolution
At-A-Glance Technical Data
The S-76 airframe relies on a sleek, low-drag fuselage and a fully retractable tricycle landing gear system. This medium, twin-turboshaft design cuts down on wind resistance in flight. This streamlined shape explains why the helicopter remains a popular choice for corporate travel and long-distance passenger flights.
The “D” model adds major technological upgrades over older versions. The S-76D features an all-glass cockpit and a dual-speed composite main rotor. These upgrades, alongside larger fuel tanks and full ice protection, help the helicopter fly safely in poor weather conditions.
Engine Performance and Propulsion Efficiency
PW210 Engine | Photo: rtx.com
Two Pratt & Whitney Canada PW210S turboshaft engines provide dependable twin-engine power. This platform sits in the elite 1,100 shaft horsepower class and features an advanced dual-channel Full Authority Digital Engine Control (FADEC) system. This smart automation reduces pilot workload and ensures optimal engine settings during every phase of flight.
Engineers built this specific powerplant with a compact, modern design to lower fuel burn and maximize the power-to-weight ratio. The twin-engine setup provides critical power margins. If one engine fails during a demanding flight, the remaining engine safely steps up to deliver steady, predictable torque so the aircraft can continue flying safely to a landing zone.
Exterior Dimensions and Weight Limits
The Sikorsky S-76 airframe | Photo: lockheedmartin.com
The structural footprint of the Sikorsky S-76D features a compact profile designed for seamless integration with standard helipad layouts and hangar configurations.
Built with a fully retractable tricycle landing gear setup, the airframe maintains high ground clearance while maximizing stability during taxiing and ground handling.
The data below details the exact physical sizes and weight limits of the aircraft.
| Main Rotor Diameter | 44 feet (13.41 meters) |
| Overall Fuselage Length | 52.5 feet (16.00 meters) |
| Aircraft Height | 14.5 feet (4.41 meters) |
| Maximum Gross Weight | 11,875 pounds (5,386 kilograms) |
Cruise Velocity and Operational Range
The aerodynamic profile of the Sikorsky S-76D is optimized for sustained high-speed transit and excellent range efficiency under varied environmental conditions. Equipped with a dual-speed composite main rotor system and advanced ice protection, the platform maintains stable cruise velocities and predictable fuel burn rates across high-altitude and hot-weather environments.
The values below define the standard factory performance metrics for the aircraft.
| Average Cruise Airspeed | 143 knots (265 kilometers per hour) |
| Range (With 30-Minute Reserve) | 297 nautical miles (550 kilometers) |
| Maximum Passenger Seating | Up to 12 passenger seats |
| Maximum Fuel Capacity | 296 gallons (1,120 liters) |
Interior Layout and Operational Utility
Entry and exit are easy through large, limousine-like cabin doors with electrically extendable steps. | Photo: lockheedmartin.com
The Sikorsky S-76D is widely known as a top-tier passenger transport helicopter. Its large seating layout, twin-engine safety, full IFR tools, and quiet cabin make it ideal for corporate flights, offshore energy crew transfers, and quick utility tasks.
The layout of the aircraft manages the payload and flight range through a smart balance of weight. The cabin can carry high passenger weights while keeping plenty of room for baggage and fuel. For flights over water, the frame supports built-in emergency floats, extra survival gear, and maritime radio tools without changing the main cabin space.
S-76D Core Specifications
| Aircraft Model | Sikorsky S-76D |
| Aircraft Category | Medium Twin-Engine Turboshaft Helicopter |
| Powerplant Assembly | 2 Pratt & Whitney Canada PW210S Turboshaft Engines |
| Maximum Certified Gross Weight | 11,875 lbs / 5,386 kg |
| Standard Cruise Speed | 143 kt / 265 km/h |
| Operational Range (30-Min Reserve) | 297 NM / 550 km |
| Maximum Seating Capacity | 12 Passengers |
| Main Rotor System Diameter | 44 ft / 13.41 m |
| Total Overall Length | 52.5 ft / 16.00 m |
S-76D Engineering and Design Verdict
The superior performance of the S-76D helicopter is the culmination of more than 30 years of technology advancement for the aircraft. | Photo: lockheedmartin.com
The Sikorsky S-76D remains a top standard for medium twin-engine helicopters built for complex, all-weather flights. The clean blend of modern PW210S engines, glass cockpit screens, and a composite rotor head gives the aircraft a great balance of speed, range, and cabin space.
In short, these specs show an airframe built for high reliability and technical precision. The smooth mix of the composite main rotor, the strong PW210S engines, and the sleek body allows the helicopter to work with great efficiency. These matching engineering features prove that the Sikorsky S-76D is a top standard for medium twin-engine flight performance.