Started in 1989 by the CHRDI and the Changhe Helicopter Aviation Industry Group, the Z-11 is the product of reverse-engineering the second-hand Aérospatiale AS 350B Ecureuil (Squirrel), a.k.a. AStar, purchased in the USA.  The Turboméca Arriel 1D engine was redesignated the Liming WZ8D.  The vessel could be equipped with the Honeywell LTS101-700D-2 (rated 560 kW), instead.

The first prototype first flew on 16 December 1994.  The helicopter gained its type certification in 1996 and Civil certification in 2001.

The Empty Weight is reported variably as 1,120 kg and 1,253 kg; the standard fuel load is 423 kg.

The Z-11 has been marketed as the CZ11 and AC301.  An armed variant, the Z-11W, received technical certification in 2007.


Data on design, manufacture and status

Design authority: Changhe Aircraft Industries Corporation

Primary manufacturer: Changhe Aircraft Industries Corporation

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: 1-2

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 3.14 m 10.3 ft
Overall Length: 13.01 m 42.7 ft
Overall Width: 10.69 m 35.1 ft
Airframe Dimensions
Airframe Length: 11.24 m 36.9 ft
Airframe Width:  
Airframe Height:  
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track:  
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Cruising Speed: 218 km/h; Maximum Speed: 261 km/h; Range (with 20-min reserve): 590 km

Max Gross Weight (ground): 2,200 kg 4,850 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 2,200 kg 4,850 lb
Empty Weight: 1,250 kg 2,756 lb
Useful Load: 950 kg 2,094 lb
Empty Weight Fraction: 0.568
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE: 5,250 m 17,224 ft
Hover Ceiling OGE: 2,930 m 9,613 ft
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling: 5,240 m 17,192 ft
Range and Endurance
Max Range:  
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Number of engines: 1
Designation: Liming WZ8D turbine
Manufacturer: Liming Aircraft 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: 10.69 m 35.07 ft
Direction of Rotation: Unknown
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry:
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 89.75 m² 966.1 ft²
Disc Loading: 24.51 kg/m² 5.020 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: 1.86 m 6.10 ft
Configuration: Unknown
Direction of Rotation: Unknown
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction:  
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 2.72 m² 29.2 ft²
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

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