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  • Mil Mi-6 (Hook) Transport Helicopter

    The Mil Mi-6 Hook heavy-lift transport helicopter continues to serve around the world despite production concluding in 1981.

     Updated: 10/7/2015; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    The Mil Mi-6 was an inventory stalwart for the Soviet Union and its allies during the Cold War. For a time, the Mi-6 represented the largest helicopter production airframe in the world and proved to be the fastest such aircraft, netting several world speed records early in her tenure. Her rugged qualities assured her active duty in the far-reaching areas of the Siberian territories and, despite her Cold War roots, she still maintains an active military presence in world air arms - a testament to her design and general usefulness. The Russians retired the type themselves in 2002 as age began creeping into the maintainability and operational costs of this fine rotary aircraft.

    The Mi-6 originated in a joint Soviet Air Force/Aeroflot need for a large, heavy-lift transport helicopter system. Truth be told, the requirement was a staggering endeavor but matched carefully by the veteran engineers at Mil. The resulting design produced the mammoth V-6 prototype series. First flight of the V-6 occurred in September of 1957 with test pilot N.B. Leshin at the controls. By capability alone, the V-6 would be able to match the muscle of such fixed-wing, transport mounts as the American Lockheed C-130 Hercules, proving that the V-6 certainly had some "kick" to her drive train. Her engine and gearbox components were all large elements making up a most powerful internal lift system. The V-6 ultimately graduated to become a full-production model by 1960 and was showcased in the Soviet inventory under the designation of "Mi-6". She quickly garnered the NATO nickname of "Hook" for recognition purposes. It was common practice for NATO to assign (sometimes derogatory) codenames for Soviet-originated aircraft. Fighters took on codenames beginning with the letter "F" (as in "Fishbed" or "Fulcrum") while bombers were given "B" names (as in "Bison" or "Bear"). Helicopters were, therefore, aptly given "H" names (as in "Hind" or "Hip"). The Mi-6 was notable in the annals of Soviet aircraft lore for she became the first turboshaft-powered helicopter to reach both production status and operational service in their ranks. Furthermore, she became the first helicopter anywhere in the world to break 300km/h, setting a speed record in the process.

    Production and Marks
    NOTE: Soviet aircraft designations are never as "clean" as some might find in Western inventories where "A", "B" and "C" models are ever-prevalent. Instead, models are designated moreso by their inherent function and marked in the Russian language so designations never truly fall into a convenient chronological listing (at least to the Western observer).

    Production of this massive helicopter ultimately yielded over 925 examples with examples originating from Soviet factories from 1960 into 1981.

    As mentioned above, the Mi-6 began as the V-6 prototype model (also known under the formal designation of "Zavod No.329 Moscow"). Development culminated in the first production models encompassing the generic "Mi-6" designation with these representing the base heavy-lift transport helicopter family. NATO assigned the codename of "Hook-A" to the first production series. These were followed by the Mi-6A, a dedicated civilian transport model that offered impressive seating for up to 90 passengers. The dedicated military transport derivative became known as the Mi-6T (also "Hook-A" by NATO) and sported seating for up to 70 personnel.

    Other militarized variants soon followed and included the Mi-6VKP ("Hook-B") Airborne Electronic Warfare (AEW) platform and aerial command post (identified by its many antenna), the Mi-6BUS ("Hook-C") airborne command post, the Mi-6AYaSh ("Hook-D") airborne command post fitting a SLAR (Side-Looking Airborne Radar) system, the Mi-6PP electronic reconnaissance platform (with AWAC detection and jamming systems), the Mi-6PRTBV fuel transport, the Mi-6R radio communications platform, the Mi-6S MEDEVAC (MEDical EVACuation) variant with room for up to 41 medical litters and the Mi-6TZ/Mi-6ATZ fuel transports, these used to refuel both fixed-wing aircraft and helicopters (though while on the ground and not in-flight).

    Of particular note to the Mi-6 variants was the Mi-6M anti-submarine warfare (ASW) platform. This model fitted up to four aerial torpedoes as well as air-to-surface rockets for combating near-surface enemy submarines. The type was further backed by dedicated sub-hunting equipment onboard. Likewise, the militarized Mi-6RVK served as a test-bed for various mobile missile launching systems appearing sometime in 1965.

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    Mil Mi-6 (Hook) Technical Specifications

    Service Year: 1962
    Type: Transport Helicopter
    National Origin: Soviet Union
    Manufacturer(s): Mil Moscow Helicopter Plant - Soviet Union
    Production Total: 934

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 6
    Length: 108.86 feet (33.18 meters)
    Width: 114.83 feet (35.00 meters)
    Height: 32.35 feet (9.86 meters)

    Weight (Empty): 60,054 lb (27,240 kg)
    Weight (MTOW): 93,696 lb (42,500 kg)

    Installed Power and Standard Day Performance

    Engine(s): 2 x Soloviev (now Aviadvigatel) D-25V turboshaft engines developing 5,500 shaft horsepower each and driving a five-blade main rotor and four-blade tail rotor.

    Maximum Speed: 186 mph (300 kph; 162 knots)
    Maximum Range: 385 miles (620 km)
    Service Ceiling: 14,747 feet (4,495 meters; 2.79 miles)

    Armament / Mission Payload

    Typically None. Optional:

    Anti-Submarine Warfare Variant:
    4 x Torpedoes
    2 x Air-to-Surface Rockets

    Global Operators / Customers

    Algeria; Belarus; Bulgaria; China; Egypt; Ethiopia; Indonesia; Iraq; Kazakhstan; Laos; Peru; Poland; Russia; Soviet Union; Syria; Ukraine; Uzbekistan; Vietnam; Zimbabwe

    Model Variants (Including Prototypes)

    V-6 - Prototype Model

    Mi-6 ("Hook-A") - Base Production Series Designation

    Mi-6A - Civilian Transport; seating for up to 90 passengers

    Mi-6T ("Hook-A") - Military Transport; seating for up to 70 passengers.

    Mi-6VKP ("Hook-B") - Airborne Electronic Warfare (AEW) Platform; Airborne Command Post.

    Mi-6BUS ("Hook-C") - Airborne Command Post

    Mi-6AYa - Similar to Mi-6BUS

    Mi-22 - Similar to Mi-6BUS

    Mi-6AYaSh ("Hook-D") - Airborne Command Post fitted with SLAR

    Mi-6VUS - Similar to Mi-6AYaSh

    Mi-6VzPU - Similar to Mi-6AYaSh

    Mi-6L - Airborne Laboratory; fitted with D-25VF series turboshaft engines.

    Mi-6LL - Airborne Laboratory similar in scope to Mi-6L

    Mi-6M - Anti-Submarine Warfare Platform; provision for torpedoes, rockets and specialized sub-hunting systems.

    Mi-6P - Passenger Transport; seating for up to 80 passengers.

    Mi-6PP - Electronic Reconnaissance Platform; AWACs detection facilities.

    Mi-6PR - Developmental Electronic Warfare Platform

    Mi-6PRTBV - Modified Mi-6s as mobile technical bases and rocket fuel transports.

    Mi-6PS - Modified Search & Rescue (SAR) Platform used in space capsule recoveries at sea.

    Mi-6PSA - Modified Mi-6PS



    Mi-6R - Radio Communications Platform

    Mi-6RVK - Developmental Mobile Missile Launch Platform

    Mi-6S - Medical Evacuation (MEDEVAC) Variant; room for up to 41 medical litters.

    Mi-6TP - Cargo-Passenger Hybrid Transport Model

    Mi-6TZ - Fuel Transport Platform

    Mi-6ATZ - Fuel Transport Platform

    Mi-6VR "Vodoley" - Developmental Mi-6 model for testing various de-icing and main rotor systems.