PT6A-66

Engine model
Manufacturer Pratt & Whitney Canada
Engine type Turboprop

Technical specifications

Design
Compressor stages
5
Control system Hydromechanical
Gas generator stages
1
Power turbine stages
2
Dimensions
Height
0.47 m
1.54 ft
Length
1.77 m
5.81 ft
Width
0.47 m
1.54 ft
Power limits
Max. continuous power
634 kW
850 hp
Max. takeoff power
634 kW
850 hp
Rotation speeds
N1 RPM
37,468
N2 RPM
33,235
Output shaft RPM
2,205
Torque limits
Max. continuous torque
302.4 daN/m
2,230.4 lbf⋅ft
Max. takeoff torque
302.4 daN/m
2,230.4 lbf⋅ft
Max. transient overtorque
372.9 daN/m
2,750.4 lbf⋅ft
Weights
Dry weight
207 kg
456 lb