Developed in 1961 as the commercial airline variant of the S-61 with a passenger capacity of either 28 or 25 with galley and toilet.  The aircraft can be fitted with removable baggage pods and airstairs.


Data on design, manufacture and status

Design authority: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Primary manufacturer: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Parent type: No type defined

Aircraft status: No longer flying


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (all retractable)

Layout and Dimensions

Data on aircraft size

50 inches longer than the original S-61.

Overall Dimensions
Overall Height: 5.08 m 16.7 ft
Overall Length: 22.16 m 72.7 ft
Overall Width: 18.90 m 62.0 ft
Airframe Dimensions
Airframe Length: 17.96 m 58.9 ft
Airframe Width: 4.78 m 15.7 ft
Airframe Height: 4.67 m 15.3 ft
Landing Gear Dimensions
Landing Gear Base: 7.15 m 23.5 ft
Landing Gear Track: 3.96 m 13.0 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Cruise Speed: 136 mph (218.871 km/h)

Max Gross Weight (ground): 8,618 kg 19,000 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 8,618 kg 19,000 lb
Empty Weight: 4,653 kg 10,259 lb
Useful Load: 3,965 kg 8,741 lb
Empty Weight Fraction: 0.540
Climb Performance
Max Rate of Climb: 8 m/s 1,640 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Max Level Flight Speed: 235 km/h 127 kts
Never Exceed Speed:  
Service Ceiling: 3,505 m 11,499 ft
Range and Endurance
Max Range: 444 km 240 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Number of engines: 2
Designation: GE CT58-100-1 turbine
Manufacturer: General Electric Company
Normal Ratings
Max continuous:  
Take-off / rated:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

NACA 0012 airfoil

Main Rotor Characteristics
Diameter: 18.90 m 62.00 ft
RPM: 203.0 rpm 203.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Fully articulated
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord: 0.464 m 1.52 ft
Blade Tip Geometry: Conventional
Blade Twist: -0.140 rad -8.000 deg
Number of Blades: 5
Main Rotor Derived Characteristics
Disc Area: 280.48 m² 3019.2 ft²
Disc Loading: 30.73 kg/m² 6.293 lb/ft²
Solidity: 0.0781
Main Rotor Blade Derived Characteristics
Blade area per blade: 4.38 m² 47.1 ft²
Tip Speed: 200.86 m/s 659.0 fps

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 3.15 m 10.33 ft
Configuration: Pusher
Direction of Rotation: Top blade aft
RPM: 1244 rpm 1244 rpm
Tail Rotor Blade Characteristics
Number of Blades: 5
Blade Construction:  
Blade Chord: 0.187 m 0.61 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 7.79 m² 83.9 ft²
Solidity: 0.1885
Tail Rotor Blade Derived Characteristics
Tip Speed: 205.15 m/s 673.1 fps
Blade Area (per blade): 0.294 m² 3.16 ft²

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