2 were purchased (known by the designation YH-31) for U.S. Army evaluation and test. A third ship was subsequently built in Canada. Resembling the LZ-4, the helicopter was equipped with an 8-cylinder supercharged engine.
The aircraft was capable of talking 6 passengers or 4 litters.
VTOL type: Helicopter
Lift configuration: Single main rotor
Dedicated control device: Tail rotor
Crew required: 2
Crew seating: Side-by-side
Landing gear: Wheels (non-retractable)
Overall Width: 14.63 m (48.0 ft)
Max Gross Weight (ground): 2359 kg (5200 lb)
Max Range: 394 km (213 nm)