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Mil Mi-4: Wikis


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Mil Mi-4 at Prague Aviation Museum
Role Transport helicopter
Manufacturer Mil Moscow Helicopter Plant
First flight 3 June 1952
Introduced 1953
Status Limited active service
Primary users Soviet Air Force
Polish Air Force
Produced 1951-1969
Number built over 4,500 including Z-5s
Variants Harbin Z-5

The Mil Mi-4 ( USAF/DoD reporting name "Type 36"[1], NATO reporting name "Hound"[2]. ) was a Soviet transport helicopter that served in both military and civilian roles.


Design and development

The Mi-4 was designed in response to the American H-19 Chickasaw and the deployment of U.S. helicopters during the Korean War. While the Mi-4 superficially resembles the H-19 Chickasaw, it is a larger helicopter and is able to lift more weight. The first model entered service in 1952, and replaced the Mi-1. The helicopter was first displayed to the outside world in 1952 at the Soviet Aviation Day in Tushino.

One Mi-4 was built with a jettisonable rotor.

Operational history

The Mi-4 went out of service with the development of the Mi-8. It is not used by the Russian Air Force today, though it remains in service in some countries as a utility helicopter or a military transport. The Mi-4 played a very important role in Bangladesh liberation war of 1971. The Mi-4 was the workhorse of the Indian Army at the time. A highly successful heli-borne operation using Mi-4's helped the Indian Army's 57 Mountain Division clear the Meghna River. The helilift of a battalion of Indian troops to the outskirts of Sylhet was the first heli-borne operation of the Indian army.


Prototype. Designation reused for the Mi-12.
Mi-4 (NATO - Hound-A)
Basic production version.
Assault transport helicopter.
Mi-4L Lyukes
Six-seat VIP transport version, sometimes converted into an air ambulance helicopter.
Mi-4M (NATO - Hound-C)
Armed close-support helicopter, fitted with a gun turret.
Civil transport helicopter, with accommodation for between 8 and 11 passengers, plus eight strechers and a medical attendant for air ambulance duties.
Mi-4PL (NATO - Hound-B)
Anti-submarine warfare helicopter.
Mi-4S Salon
VIP transport helicopter.
Multi-role agricultural helicopter, with a large chemical container in the main cabin. Also used as a fire-fighting helicopter.
Major military production version, equipped with a large diameter main rotor and bulged windows.
Harbin Z-5
Chinese military transport helicopter. Chinese production version.
Harbin Z-6
Prototype turbine powered version of the Z-5, no production undertaken.
Chinese civil transport helicopter. Chinese production version.


Mi-4 operators

Military operators

18 acquired by the Royal Afghan Air Force from 1963, withdrawing the last from service in 1997[3].
59 total examples acquired by the Albanian Air Force from 1957, including 37 Z-5 versions from 1967. These were reported in service as late as 2004[3].
Algerian Air Force
People's Air and Air Defence Force of Angola
Bulgarian Air Force
Cambodian Air Force
One example, of the FAR (Fuerza Aérea Revolucionaria) is displayed at the Museo del Aire (Cuba)[4]
Czechoslovakian Air Force
 East Germany
No longer in service with the Egyptian Air Force
3 units were in service with the Finnish Air Force from 1962-1979.
Hungarian Air Force
Indian Air Force
Indonesian Air Force
Iraqi Air Force
Mongolian People's Air Force
 North Korea
North Korean Air Force
Polish Air Force
Romanian Air Force
Somali Air Corps
 South Yemen
 Soviet Union
Syrian Air Force
Sudanese Air Force
Vietnam People's Air Force
Yemen Air Force
25 acquired by the SFR Yugoslav Air Force during the middle 1960's, lather replaced by Mi-8 and withdrawn from service during the 1970s.

Civil Operators

  • TAROM - 3 used for high voltage powerlines construction
 Soviet Union

Specifications (Mi-4A)

Mil Mi-4 3-view drawing

General characteristics

  • Crew: One or two pilots
  • Capacity: 16 troops or up to 1,600 kg (3,520 lb) of cargo
  • Length: 26.80 m (87 ft 11 in)
  • Rotor diameter: 21.00 m (68 ft 11 in)
  • Height: 4.40 m (14 ft 5 in)
  • Disc area: 346.4 m² (3,727 ft²)
  • Empty weight: 5,100 kg (11,220 lb)
  • Loaded weight: 7,150 kg (15,730 lb)
  • Max takeoff weight: 7,550 kg (16,610 lb)
  • Powerplant:Shvetsov ASh-82V radial engine, 1,250 kW (1,675 hp)


See also

Related development

Comparable aircraft



  • Ogden, Bob (2008). Aviation Museums and Collections of The Rest of the World. UK: Air-Britain. ISBN 9780851303949

External links

The initial version of this article was based on material from It has been released under the GFDL by the copyright holder.


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