OP-1 was the first protoype in the development program for the Russian Mi-38 medium multipurpose helicopter. Protoype OP-1 was originally fitted with the Pratt & Whitney Canada PW127/TS engines and, later, the Klimov TV-117V engine option.
Data is based on the year 2017 data points of the fourth protoype and 2000 Russia's Helicopter World catalog data points of the Mi-38.
VTOL type: Helicopter
Lift devices: 1 Single main rotor
Dedicated control device: 1 Tail rotor
Crew required: 1-3 in Side-by-side arrangement
Landing gear: Wheels (non-retractable)