Initial certification in Nov 1993.  Derived from the 280FX with a larger cabin.


Data on design, manufacture and status

Design authority: Enstrom Helicopter Corp.

Primary manufacturer: Enstrom Helicopter Corp.

Parent type: No type defined

Aircraft status: Status unknown


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 3.00 m 9.8 ft
Overall Length:  
Overall Width: 9.75 m 32.0 ft
Airframe Dimensions
Airframe Length: 9.20 m 30.2 ft
Airframe Width:  
Airframe Height:  
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track: 2.50 m 8.2 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width: 1.80 m 5.9 ft

Weights and Performance

Data on aircraft weight and flight characteristics

Performance at Gross Weight.

Max Gross Weight (ground): 1,360 kg 2,998 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 1,360 kg 2,998 lb
Empty Weight: 826 kg 1,821 lb
Useful Load: 534 kg 1,177 lb
Empty Weight Fraction: 0.607
Climb Performance
Max Rate of Climb: 7 m/s 1,375 fpm
Hover Performance
Hover Ceiling IGE: 3,750 m 12,303 ft
Hover Ceiling OGE: 1,645 m 5,397 ft
Max Level Flight Speed: 231 km/h 125 kts
Never Exceed Speed: 231 km/h 125 kts
Service Ceiling: 3,962 m 12,999 ft
Range and Endurance
Max Range: 640 km 346 nm
Max Endurance: 5 hrs 5 hrs

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Number of engines: 1
Designation: Allison 250-C20W turbine
Manufacturer: Allison Engine 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

Main Rotor Characteristics
Diameter: 9.75 m 31.99 ft
Direction of Rotation: Counterclockwise
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry: Flat
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 74.66 m² 803.7 ft²
Disc Loading: 18.22 kg/m² 3.731 lb/ft²
Main Rotor Blade Derived Characteristics
Blade area per blade:  
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 1.50 m 4.92 ft
Configuration: Unblocked
Direction of Rotation: Top blade aft
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction:  
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 1.77 m² 19.0 ft²
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

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