de Havilland Canada DHC-4 Caribou

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DHC-4 Caribou
RAAF Caribou Vabre.jpg
A Royal Australian Air Force Caribou at Bundaberg airport.
Role STOL Transport
Manufacturer de Havilland Canada
First flight 30 July 1958
Introduction 1961
Retired Royal Australian Air Force (2009)
United States Army
United States Air Force
Status Retired from military operators, limited service. Some Turboprop conversions in active service
Produced 1958–1968
Number built 307
Developed into de Havilland Canada DHC-5 Buffalo

The de Havilland Canada DHC-4 Caribou (designated by the United States military as the CV-2 and later C-7 Caribou) is a Canadian-designed and produced specialized cargo aircraft with short takeoff and landing (STOL) capability. The Caribou was first flown in 1958 and although mainly retired from military operations, is still in use in small numbers as a rugged "bush" aircraft.

Design and development[edit]

C-7B Caribou aircraft of the U.S. Army/California Army National Guard
RAAF DHC-4 Caribou (A4-299) from No. 38 Squadron.

The de Havilland Canada company's third STOL design was a big step up in size compared to its earlier DHC Beaver and DHC Otter, and was the first DHC design powered by two engines. The Caribou, however, was similar in concept in that it was designed as a rugged STOL utility aircraft. The Caribou was primarily a military tactical transport that in commercial service found itself a small niche in cargo hauling. The United States Army ordered 173 in 1959 and took delivery in 1961 under the designation AC-1, which was changed to CV-2 Caribou in 1962.

The majority of Caribou production was destined for military operators, but the type's ruggedness and excellent STOL capabilities requiring runway lengths of only 1200 feet (365 metres)[1] also appealed to some commercial users. U.S. certification was awarded on 23 December 1960. Ansett-MAL, which operated a single example in the New Guinea highlands, and AMOCO Ecuador were early customers, as was Air America, (a CIA front in South East Asia during the Vietnam War era for covert operations). Other civil Caribou aircraft entered commercial service after being retired from their military users.

Today only a handful are in civil use.

The Turbo Caribou Program[edit]

PEN Turbo Aviation of Cape May, NJ, announced they would undertake the program of re-engineering the DHC-4A Caribou to the turbine powered variant, now designated DHC-4A Turbo Caribou. The conversion utilizes the PT6A-67 engines and Harzell 5 Bladed HC-B5MA-3M Constant Speed/Reversing propellers. Overall performance has improved and "new" basic weight is reduced while maximum normal take-off weight remained at 28,500 lbs. Maximum payload is 10,000 lbs. Both Transport Canada (11/14/00) and Federal Aviation Administration (2/27/01) have issued Supplemental Type Certificates for the Turbo Caribou. As of Sept 17, 2014, only 3[2] air frames have gone through the conversion process. PEN Turbo has stockpiled dozens of air frames at their facility in NJ for future conversion. [1]. PEN Turbo Aviation named their company after Perry E. Niforos, who died in the 1992 crash of an earlier turboprop Caribou converted by a different firm, NewCal Aviation.[3]

Operational history[edit]

An RAAF Caribou transport aircraft on landing approach, Vietnam War.

In response to a U.S. Army requirement for a tactical airlifter to supply the battlefront with troops and supplies and evacuate casualties on the return journey, de Havilland Canada designed the DHC-4. With assistance from Canada's Department of Defence Production, DHC built a prototype demonstrator that flew for the first time on 30 July 1958.

Impressed with the DHC4's STOL capabilities and potential, the U.S. Army ordered five for evaluation as YAC-1s and went on to become the largest Caribou operator. The AC-1 designation was changed in 1962 to CV-2, and then C-7 when the U.S. Army's CV-2s were transferred to the U.S. Air Force in 1967. U.S. and Australian Caribou saw extensive service during the Vietnam War.

The U.S. Army purchased 159 of the aircraft and they served their purpose well as a tactical transport during the Vietnam War, where larger cargo aircraft such as the Fairchild C-123 Provider and the Lockheed C-130 Hercules could not land on the shorter landing strips. The aircraft could carry 32 troops or two Jeeps or similar light vehicles. The rear loading ramp could also be used for parachute dropping (also, see Air America).

Under the Johnson-McConnell agreement of 1966, the Army relinquished the fixed wing Caribou to the United States Air Force in exchange for an end to restrictions on Army rotary wing operations. On 1 January 1967, the 17th, 57th, 61st, 92nd, 134th, and 135th Aviation Companies of the U.S. Army were inactivated and their aircraft transferred respectively to the newly activated 537th, 535th, 536th, 459th, 457th, and 458th Troop Carrier Squadrons of the USAF (This was Operation “Red Leaf”). On 1 August 1967 the "troop carrier" designations were changed to "tactical airlift".

Some U.S. Caribou were captured by North Vietnamese forces and remained in service with that country through to the late 1970s. Following the war in Vietnam, all USAF Caribou were transferred to Air Force Reserve and Air National Guard airlift units pending their replacement by the C-130 Hercules in the 1980s.

Ex U.S. Army CV-2A, operated by Chieftain Aviation, at Opa-locka Airport near Miami in 1989

All C-7s have now been phased out of U.S. military service, with the last example serving again under U.S. Army control through 1985 in support of the U.S. Army's Golden Knights parachute demonstration team. Other notable military operators included Australia, Canada, India, Malaysia and Spain.

The Royal Australian Air Force retired its last Caribou, A4-140, on 27 November 2009.[4] The aircraft, which was manufactured in 1964, was donated to the Australian War Memorial, Canberra.[5]

Civilian operations[edit]

After retirement from military use, several examples of the Caribou have been purchased by civilian operators for deployment in areas with small airfields located in rugged country with few or poor surface transport links.

Variants[edit]

Royal Australian Air Force DHC-4
DHC-4 Caribou
STOL tactical transport, utility transport aircraft.
CC-108
Royal Canadian Air Force designation for the DHC-4 Caribou.
YAC-1
This designation was given to five DHC-4 Caribou, sold to the United States Army for evaluation.
AC-1
United States Army designation for the first production run of 56 DHC-4 Caribou. Later redesignated CV-2A in 1962.
CV-2A
United States Army AC-1 redesignated in 1962.
CV-2B
This designation was given to a second production run of 103 DHC-4 Caribou, which were sold to the U.S. Army, with reinforced internal ribbing.
C-7A/B
These designations were applied to all 144 Caribou transferred to the U.S. Air Force by the U.S. Army.
DHC-4A Caribou
Similar to the DHC-4, but this version had an increased takeoff weight.
DHC-4T Turbo Caribou
A conversion of the baseline DHC-4 Caribou powered by the PWC PT6A-67T turboprop engines designed, test flown and certified by the Pen Turbo Aviation company.

Operators[edit]

Military operators[edit]

 Abu Dhabi/  United Arab Emirates
Caribou at the RAAF museum.
 Australia
 Canada
 Cameroon
 Costa Rica
 Ghana
 India
  • Indian Air Force – India received 20 new build Caribou, supplementing them with four ex-Ghanaian Caribou in 1975.[8]
The only Iranian DHC-4 Caribou
 Iran
 Kenya
 Kuwait
 Liberia
  • Liberian Army – Two refurbished aircraft were delivered to the Air Reconnaissance Unit in 1989.[12] The aircraft were destroyed during the civil war.
RMAF Caribou on display at the Malaysian Army Museum, Port Dickson.
 Malaysia
 Oman
 Spain
  • Spanish Air Force – received 12 new Caribou later supplemented by 24 former United States Air Force C-7As.[15] Final retirement 12 June 1991.[16]
 South Vietnam
 Sweden
 Tanzania
 Thailand
 Uganda
 United States
 Vietnam
 Zambia

Civil operators[edit]

 Australia
 Canada
  • La Sarre Air Services
    • acquired C-GVGX in 1977 (delivered 1961) and unknown status after 1981 when Propair formed from merger of La Sarre Air Services (used in El Salvador to Nicaragua 1986)[21]
 Costa Rica
 Ecuador
 Gabon
 Indonesia
 Malta
 Papua New Guinea
 Taiwan
 United States

Aircraft on display[edit]

Australia[edit]

Airworthy
On display

Costa Rica[edit]

On display
  • MSP002 - DHC-4 on static display at Daniel Oduber Quiros International Airport, Liberia, Costa Rica

India[edit]

On display

Malaysia[edit]

On display

Spain[edit]

On display

United States[edit]

CV-2B 62-4149
C-7 on display at the 82nd Airborne Division War Memorial Museum, once used by the Golden Knights parachute team
detail of C-7A Caribou at Museum of Aviation, Robins AFB
Airworthy
On display

Specifications (DHC-4A)[edit]

Data from MacDonald Aircraft Handbook.[55]

General characteristics

  • Crew: Three
  • Capacity:
    • 32 troops or
    • 24 fully equipped paratroops or
    • 14 casualty stretchers
  • Payload: 8,000 lb (3,628 kg)
  • Length: 72.58 ft (22.12 m)
  • Wingspan: 95.58 ft (29.13 m)
  • Height: 31.66 ft (9.65 m)
  • Wing area: 912 ft² (84.7 m²)
  • Empty weight: 16,920 lb (7,675 kg)
  • Loaded weight: 28,500 lb (12,927 kg)
  • Powerplant: 2 × Pratt and Whitney R-2000-7M2 Twin Wasp 14-cylinder, 1,450 hp (1,081 kW) each

Performance

The plane takes off within 910 feet (280 m); it lands within 850 feet (260 m).

See also[edit]

Related development
Aircraft of comparable role, configuration and era

References[edit]

Notes[edit]

  1. ^ "Caribou Sales Brochure – 1962." c-7acaribou.com, 26 May 2011.
  2. ^ Boring, War Is (2014-09-22). "The Turbo Caribou Is One of the World’s Best and Rarest Airlifters". Medium. Retrieved 2017-09-17. 
  3. ^ Boring, War Is (2014-09-22). "The Turbo Caribou Is One of the World’s Best and Rarest Airlifters". Medium. Retrieved 2017-09-17. 
  4. ^ a b "Defence 'workhorse' makes final flight." ABC News, 27 November 2009. Retrieved: 27 November 2009.
  5. ^ a b c Fitzgibbon, Joel (9 March 2009). "HONOURING THE CARIBOU’S SERVICE TO AUSTRALIA". Australian Government Department of Defense. Archived from the original on 10 May 2009. Retrieved 9 December 2016. 
  6. ^ a b Henley and Ellis Air Enthusiast March/April 1998, p. 24.
  7. ^ a b c d "A4 DHC-4 Caribou". RAAF Museum Point Cook. 2009. Retrieved 14 April 2012.
  8. ^ a b c d e Henley and Ellis Air Enthusiast March/April 1998, p. 26.
  9. ^ "Fuerza Pública revive avión militar Caribú – SUCESOS – La Nación" (in Spanish). Nacion.com. Retrieved: 26 May 2011.
  10. ^ Andrade 1982, p. 141.
  11. ^ "Kuwait Air Force (KAF)." Archived 17 February 2012 at the Wayback Machine. Scramble.nl. Retrieved: 26 May 2011.
  12. ^ Henley and Ellis Air Enthusiast March/April 1998, pp. 26, 28.
  13. ^ "Malaysian Forces Overview." Archived 7 February 2012 at the Wayback Machine. Scramble.nl. Retrieved: 26 May 2011.
  14. ^ "Royal Air Force of Oman." Archived 1 July 2007 at the Wayback Machine. Scramble.nl. Retrieved: 26 May 2011.
  15. ^ Andrade 1982, p. 204.
  16. ^ Soupart Air Enthusiast March–May 1992, p. 47.
  17. ^ a b Buser, Wayne. "Caribou Roster." Dhc4and5.org, 4 September 2010. Retrieved: 26 May 2011.
  18. ^ "Royal Thai Police." fader.dyndns.org. Retrieved: 27 January 2012.
  19. ^ Andrade 1982, p. 231.
  20. ^ Taylor 1971, p. 19.
  21. ^ "VH-BFC. de Havilland DHC-4A Caribou. c/n 23." aussieairliners.org. Retrieved: 18 November 2012.
  22. ^ "Serial MSP002 C-7A MSN 149." Scramble.nl. Retrieved: 26 May 2011.
  23. ^ "Hore! Setelah Pom Bensin, Kini Kabupaten Puncak Papua Punya Pesawat". detik.com. Retrieved 17 September 2016. 
  24. ^ a b "De Havilland DHC-4 Caribou". HARS. HARS. Retrieved 9 December 2016. 
  25. ^ "Aircraft Register [VH-VBA]". Australian Government Civil Aviation Safety Authority. Retrieved 9 December 2016. 
  26. ^ "Aircraft Register [VH-VBB]". Australian Government Civil Aviation Safety Authority. Retrieved 9 December 2016. 
  27. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada DHC-4 Caribou, s/n A4-140 RAAF, c/n 140". Aerial Visuals. AerialVisuals.ca. Retrieved 10 December 2016. 
  28. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada DHC-4 Caribou, s/n A4-152 RAAF, c/n 152". Aerial Visuals. AerialVisuals.ca. Retrieved 10 December 2016. 
  29. ^ "DE HAVILLAND CANADA CARIBOU A4-173 C/N 173". Queensland Air Museum. Queensland Air Museum Inc. Retrieved 9 December 2016. 
  30. ^ a b "RAAF A4 De Havilland DHC-4 Caribou". ADF-SERIALS. 26 May 2016. Retrieved 10 December 2016. 
  31. ^ "Caribou". RAAF Amberley Aviation Heritage Center. Retrieved 9 December 2016. 
  32. ^ a b "De Havilland Canada DHC-4 Caribou". Bharat Rakshak. Bharat-Rakshak.com. Retrieved 10 December 2016. 
  33. ^ Sharma, Sanjeev (January 2004). "Reconstructing Caribou : A Heritage Rebuilt". Ministry of Defence. Archived from the original on 30 March 2004. Retrieved 10 December 2016. 
  34. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada DHC-4A Caribou, s/n M21-04 TUDM, c/n 270". Aerial Visuals. AerialVisuals.ca. Retrieved 10 December 2016. 
  35. ^ "Aircraft wreck or relic at San Torcuato, Spain". SpottingMode. Retrieved 10 December 2016. 
  36. ^ "Aircraft wreck or relic at Fuenlabrada, Spain". SpottingMode. Retrieved 10 December 2016. 
  37. ^ "Aircraft wreck or relic at Villanubla, Spain". SpottingMode. Retrieved 10 December 2016. 
  38. ^ "Exposición exterior del Museo de Aeronáutica y Astronáutica" (in Spanish). Ejército del Aire. Retrieved 10 December 2016. 
  39. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada C-7A Caribou, s/n T.9-25 EdA, c/n 053". Aerial Visuals. AerialVisuals.ca. Retrieved 10 December 2016. 
  40. ^ "De Havilland CV-2B Caribou". Cavanaugh Flight Museum. Archived from the original on 23 March 2014. Retrieved 9 December 2016. 
  41. ^ "FAA REGISTRY [N149HF]". Federal Aviation Administration. U.S. Department of Transportation. Retrieved 9 December 2016. 
  42. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada YC-7A Caribou, s/n 57-3079 US, c/n 005, c/r CF-LKF-X". Aerial Visuals. AerialVisuals.ca. Retrieved 9 December 2016. 
  43. ^ "Fixed Wing". United States Army Aviation Museum. Archived from the original on 22 December 2016. Retrieved 9 December 2016. 
  44. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada YC-7A Caribou, s/n 57-3080 USAF, c/n 004, c/r CF-LKU-X". Aerial Visuals. AerialVisuals.ca. Retrieved 9 December 2016. 
  45. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada YC-7A Caribou, s/n 57-3083 US, c/n 8". Aerial Visuals. AerialVisuals.ca. Retrieved 9 December 2016. 
  46. ^ Veronico, Nick. "Outdoor Exhibits - DeHavilland C-7A "Caribou"". Travis Air Force Base Heritage Center. Travis Heritage Center. Retrieved 9 December 2016. 
  47. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada C-7A Caribou, s/n 60-3767 US". Aerial Visuals. AerialVisuals.ca. Retrieved 9 December 2016. 
  48. ^ "de Havilland C-7A 'Caribou'". New England Air Museum. New England Air Museum. Retrieved 9 December 2016. 
  49. ^ "De Havilland C-7A Caribou". National Museum of the US Air Force. 15 May 2015. Retrieved 9 December 2016. 
  50. ^ "C-7A "Caribou"". Museum of Aviation. Retrieved 9 December 2016. 
  51. ^ "C-7B Caribou". Hill Air Force Base. 27 September 2007. Retrieved 9 December 2016. 
  52. ^ "C-7A Caribou". Air Mobility Command Museum. AMC Museum Foundation, Inc. Retrieved 9 December 2016. 
  53. ^ "Airframe Dossier - de Havilland Canada-deHavilland Canada DHC-4 Caribou, s/n 63-9719 US, c/n 150". Aerial Visuals. AerialVisuals.ca. Retrieved 9 December 2016. 
  54. ^ "Aircraft Inventory". Flight Test Historical Foundation. Flight Test Historical Foundation. Retrieved 9 December 2016. 
  55. ^ Green 1964, p. 249.

Bibliography[edit]

External links[edit]