An HTK-1 modified by the US Army and Navy by replacing the piston engine with a pair of Boeing 502-2 gas turbine engines, providing a combined power of 300 hp (224 kW) for continuous operation..
VTOL type: Helicopter
Lift devices: 2 in Synchropter configuration
Crew required: 1 in Side-by-side arrangement
Landing gear: Wheels (non-retractable)