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{{Short description|Canadian turboprop airliner (1950s–60s)}}
{{more footnotes|date=June 2015}}
{{Use Canadian English|date=November 2021}}
{{Use dmy dates|date=November 2021}}
{|{{Infobox aircraft begin
|name= CL-44 / CC-106 Yukon
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|caption= A Canadair CL-44 of [[Transporte Aereo Rioplatense]]. The same aircraft crashed in July 1981 following a mid-air collision.
}}{{Infobox aircraft type
|type= [[Military transport aircraft]]<br />[[Cargo aircraft]]
|manufacturer= [[Canadair]]
|designer=
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|introduced=19 July 1960 (RCAF)
|retired= 1971 (RCAF)
|status=
|primary user= [[Royal Canadian Air Force]]<!--please list only one-->
|more users= Various airlines<!--up to three more. please separate with <br />.-->
|produced=<!--years in production, e.g. 1970-1999, if still in active use but no longer built-->
|number built= 39
|developed from = [[Bristol Britannia]]
|variants with their own articles= [[Conroy Skymonster]]
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|}
The '''Canadair CL-44''' was a
The aircraft is named after the Canadian territory of [[Yukon]].
==Design and development==
In the 1950s, [[Canadair]]
[[File:Canadair CL-44 N228SW BOAC RWY 09.63 edited-3.jpg|thumb|right|Loading a Canadair CL-44 at [[Manchester Airport|Manchester]] in 1963 with the fuselage swung open. This aircraft was operated by [[British Overseas Airways Corporation|BOAC]] on charter from [[Seaboard World Airlines]]]]
The RCAF
The rollout of the Yukon was a near-disaster
==Operational
[[File:Canadair CC-106 15927 CAF LGW 09.68 edited-3.jpg|thumb|right|Canadair CC-106 Yukon of the Canadian Armed Forces at [[London Gatwick Airport]] in 1968]]
[[File:Canadair CC-106 9Q-CWN Soc Gen D'Alim Dorval 051173 edited-2.jpg|thumb|right|Canadair CC-106 of Societe Generale d'Alimentation (Zaire) at Montreal (Dorval) Airport in 1973 wearing remnants of its RCAF markings]]
[[File:Bayu Indonesia Air Canadair CL-44D4-2 Wheatley.jpg|thumb|A CL-44D4-2 of [[Bayu Indonesia Air]] in the mid-1980s at [[Perth Airport]]
Initially, the CL-44-6 was produced for the RCAF as the '''CC-106 Yukon'''. Once initial problems were resolved, in RCAF service the Yukon performed well and in December 1961, a Yukon set a world record for its class when it flew 6,750 mi (10,860 km) from Tokyo to RCAF Station Trenton, Ontario, in 17 hours, three minutes at an average speed of 400 mph (640 km/h). Later, a Yukon set a new record staying airborne for 23 hours and 51 minutes. These records were unbroken until bettered by the Boeing 747SP in 1975. By the time of their retirement, Yukons had flown 65 million miles, 1.5 billion passenger miles and 360 million ton-miles.
The CL-44D4 was briefly considered for purchase by the [[United States Air Force]] in the 1960s but the project was never culminated due to political backlash in Canada and the [[United States]].<ref>[http://www.cl44.com/cl44/44history.htm "The CL-44."] {{webarchive|url=https://web.archive.org/web/20070706120732/http://www.cl44.com/cl44/44history.htm |date=2007-07-06 }} ''cl44.com''. Retrieved: 3 March 2007.</ref> The USAF purchase of the CL-44 was complicated by two factors. It came in the aftermath of the cancellation of the [[Avro Canada CF-105 Arrow]] and involved a "swap deal" wherein 100 [[McDonnell F-101 Voodoo]] fighters were obtained in return for a contract for 232 CL-44-D4 transports for the Military Air Transport Service (MATS). The political controversy that resulted led to problems for
On the [[cargo aircraft]] variant '''CL-44D4''' the entire tail section hinged. It could be opened using [[hydraulic]] [[actuator]]s to load large items quickly. An inflatable seal at the hinge-break enabled cabin pressure to be maintained, and eight hydraulic-operated locks assured structural integrity. The tail could be opened from controls within the tail in 90 seconds. The flight controls at the joint were maintained by a system of push pads.
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In 1981 a [[Baku]], [[Azerbaijan]]-based [[Soviet Union]] interceptor deliberately rammed an [[Argentina|Argentine]] Canadair CL-44 from [[Transporte Aéreo Rioplatense]], killing the three Argentines and one [[United Kingdom|Briton]] on board; the aircraft was [[Israeli support for Iran during the Iran–Iraq war|delivering arms from Israel to Iran]] (the Soviet pilot ejected and survived).<ref>Oberg 1988, pp. 32–49.</ref>
The CC-106 Yukons retired in March 1971 and were replaced by the [[Boeing
==Variants==
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:Civil aircraft for [[Icelandic Airlines]] Loftleidir, two built ''(civil passenger version)''
;CL-44J
:Four CL-44D4 aircraft stretched by Canadair on request of Icelandic Airlines ''Loftleiðir'', with a section, 10 ft 1 in (3.07 m) forward of the wing, and another section of 5 ft 1 in (1.55 m) aft of the wing. This enabled the installation of 29 extra seats, bringing the capacity to 189 passengers. The [[MTOW|maximum take-off weight]] stayed the same since the extra weight was compensated by removing the center wing tanks. Therefore, it can be said that the stretch was a trade of capacity for range.
;[[Conroy Skymonster|CL-44-O]]
:Also known as the '''Skymonster''' and '''CL-44 Guppy'''. The CL-44-O was a single CL-44D4-2 (c/n 16) converted by [[Conroy Aircraft]], who removed the fuselage shell above the floorline, and rebuilt an enlarged fuselage to make it into a [[Aero Spacelines Super Guppy|Guppy-type aircraft]]. It was intended to transport [[Rolls-Royce RB211]] engine pods to the United States for [[Lockheed L-1011|Lockheed's L-1011 TriStar]].
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;{{ARG}}
[[File:Canadair CC106 LV-JZB AER MIA 18.07.76 edited-2.jpg|thumb|right|CC.106 of Aerotransportes landing at [[Miami International Airport|Miami]] in 1976]]
* [[Transporte Aéreo Rioplatense]]<ref name="turbo" />
* [[Aerotransportes Entre Ríos]]<ref name="turbo" />
;{{AUS}}
* [[HeavyLift Cargo Airlines]] was one of the operators of the CL-44 Guppy.
;{{BEL}}
* [[Young Cargo]]<ref>{{cite web | url = http://rzjets.net/operators/?show=3164 | title = Young Cargo | publisher = rzjets | access-date = 13 November 2021}}</ref>
;{{CAN}}
* [[Beaver Enterprises]] (dealer purchased CC-106s from the RCAF)<ref name="turbo" />
;{{COL}}
* [[Aerocondor Colombia]] (bought one CL-44-6 in 1974)<ref name="turbo" />
* AeroNorte Colombia (now [[Líneas Aéreas Suramericanas]]) (bought one CL-44J in 1984)<ref name="turbo" />
* [[Tampa Cargo]]
* [[SAEP Colombia]]
;{{CYP}}
* [[Cyprus Airways]] (leased one CL-44D4-1 1978–1980)<ref name="turbo" />
;{{ECU}}
* [[AECA Carga]] operated CL-44D-4-1
* [[Andes Airlines]]<ref name="turbo" />
;{{ESA}}
* [[TACA International Airlines]] (one CL-44-6 leased in 1974)<ref name="turbo" />
;{{GNQ}}
* [[Skymaster Freight Services]]<ref>{{cite web | url = https://www.baaa-acro.com/operator/skymaster-freight-services | title = Skymaster Freight Services | publisher = Bureau of Aircraft Accidents Archives | access-date = 3 March 2022}}</ref>
;{{GAB}}
* [[SOACO]]<ref name="turbo" />
;{{IDN}}
* [[Bayu Indonesia|Bayu Indonesian Air]]<ref name="turbo" />
;{{ISL}}
* ''[[Loftleiðir]]'' ♠ <ref name="turbo" />
;{{IRL}}
* [[Aer Turas]]<ref name="turbo" />
;{{LBN}}
* [[Trans Mediterranean Airways]] (leased)<ref name="turbo" />
;{{flagcountry|Libyan Arab Jamahiriya}}
* [[United African Airlines]]<ref name="turbo" /> later became [[Jamahiriya Air Transport]]
;{{LUX}}
* [[Cargolux]]<ref name="turbo" />
;{{MAR}}
* [[Royal Air Maroc]] (one aircraft leased in 1980)<ref name="turbo" />
;{{PER}}
* [[Aeronaves de Peru]]<ref name="turbo" />
;{{ESP}}
* [[Cargosur]]
;{{SUI}}
* [[Transvalair]] operated two aircraft.<ref name="turbo" />
;{{UK}}
* [[BOAC]] operated a transatlantic cargo service (London-Manchester-New York) with an aircraft leased from Seaboard World Airlines from 1963 until 1965.<ref name="turbo" />
* [[British Cargo Airlines]]<ref name="turbo" />
* [[British United Air Ferries|British Air Ferries]]
* [[Redcoat Air Cargo]]
* [[Transmeridian Air Cargo]] operated total eight CL-44 including ''Guppy'' aircraft.<ref name="turbo" />
;{{USA}}
* [[Aeron International Airlines]]<ref name="turbo" />
* [[Air Express International]]<ref name="turbo" />
* [[Airlift International]]
* [[Cargosur]]
*[[Flying Tiger Line|The Flying Tiger Line]] ♠ <ref name="turbo" />▼
* [[
* [[
* [[
* [[Wrangler Aviation]]
;{{URY}}
* [[Aero Uruguay]]<ref name="turbo" />
* [[Atlantida Linea Aérea Sudamericana]] (ALAS)<ref name="turbo" />
;{{ZAI}}
* [[Societé Générale d'Alimentation]] (SGA) (three CL-44-6s from 1973)<ref name="turbo" />
* [[Tramaco]]<ref name="turbo" />
* [[Vic Air Cargo]] later [[Virunga Air Cargo]]<ref name="turbo" />
===Military operators===
;{{CAN}}
* [[Royal Canadian Air Force]] ♠
** [[No. 412 Squadron RCAF]] used two aircraft as VIP transports.
** [[No. 426 Squadron RCAF]]
** [[No. 436 Squadron RCAF]]
** [[No. 437 Squadron RCAF]] received 11 Yukons with two as aerial tankers.
** [[No. 4 (Transport) Operational Training Unit RCAF]]
* [[Canadian Forces]]
==Accidents and incidents==
*21 March 1966: N453T, [[Flying Tiger Line]], crashed upon landing at [[NAS Norfolk]], Virginia due to crew inexperience.▼
The Canadair CL-44 suffered 21 hull loss incidents during its operational history including the following:
▲* 21 March 1966: N453T, [[Flying Tiger Line]], crashed upon landing at [[NAS Norfolk]], Virginia due to crew inexperience.
* 24 December 1966: While trying to land in heavy fog on [[Da Nang International Airport]], a [[Flying Tiger Line]] CL-44 crashed into the village of [[Binh Thai]], killing all four crew on board and 107 people on the ground.
* 2 December 1970: TF-LLG [[Cargolux Airlines]] S.A. crashed on approach to Dacca when controls lock system engaged.
* 20 July 1972:
* 22 December 1974: G-AWSC, [[Tradewinds Airways]], written off following damage in hard landing at Lusaka, Zambia
* 2 September 1977: G-ATZH crashed into sea while attempting emergency landing after an engine fire spread to the wing after take off from Hong Kong [[Kai Tak airport]], all four crew were killed.<ref>
* 6 July 1978: G-BCWJ, Tradewinds Airways, written off after damage caused when main gear retracted after hard landing in [[Nairobi]], Kenya.
* 4 November 1980: 5B-DAN, [[Cyprus Airways]], damaged beyond repair in after an emergency landing at [[RAF Akrotiri]], Cyprus.
* 18 July 1981: LV-JTN, [[1981 Armenia mid-air collision|mid-air collision in Armenia]] with a Soviet [[Sukhoi Su-15]], leading to death of 3 crew and 1 passenger
* 6 April 1986: HK-3148X of [[Lineas Aereas Suramericanas]], Colombia crashed upon approach to
* 14 April 2000: 3C-ZPO was damaged beyond economic repair when ammunition caught fire while on ground in [[Kinshasa]]
==Surviving aircraft==
One CC-106 is known to have been preserved. The fuselage of construction number 13, last registered as HC-AZH, has been converted into a nightclub in [[Cuenca, Ecuador]].<ref>{{cite web|url=https://www.jetphotos.com/photo/10340649|title=HC-AZH – Canadair CC-106 Yukon|website=JetPhotos.com|date=4 October 2021|accessdate=15 June 2022}}</ref>
▲The CC-106 Yukons retired in March 1971 and were replaced by the Boeing 707 (CC-137). The Yukons might have served longer with the Canadian Forces Air Transport Command but for two factors: the need for an aircraft which could operate as an in-flight refueling tanker, and the chronic shortage and high cost of spares, the latter resulting because the CL-44 had never gone into large-scale production. All Yukons were sold to South American and African operators as they could not be registered in Northern America or Europe since the Britannia windshields did not meet new security standards.<ref>Pickler and Milberry 1995, p. 141.</ref> The CC-106 had the original Bristol Britannia windshield and, on its retirement from RCAF operations, the cost of conversion was estimated at $250,000.00 per unit, cost alone precluding its use in North America and Europe. In 1974, a special exclusion was granted for the CC-106 (Cargo) for civil operations in Canada.
Additionally, the single CL-44-O Skymonster remains extant at [[Bournemouth Airport]] in the United Kingdom.<ref>{{cite web|url=https://www.jetphotos.com/photo/10451644|title=N447FT – Canadair CL-44-O Guppy|website=JetPhotos.com|date=1 January 2022|accessdate=15 June 2022}}</ref>
==Specifications CL-44D-4==
{{Aircraft specs
|prime units?=imp
▲|ref={http://en.avia.pro/blog/canadair-cl-44-tehnicheskie-harakteristiki-foto}
|crew=2 pilots, 1 flight engineer plus loadmasters as required.
|capacity=160 passengers and 66,048 lb (29,959 kg) useful load
|length
|length
|length m=41.73
|span
|span in=4
|height main=36 ft 8 in▼
|
|height in=8
|area alt=192.7 m²▼
|height m=11.18
|
|
|
|max takeoff weight
▲|max takeoff weight alt=95,000 kg
▲|engine (prop)=[[Rolls-Royce Tyne]] 515/50
|eng1 number=4
▲|type of prop=[[turboprops]]
|eng1 shp=5,730
|
|prop name=variable pitch propellers
|prop blade number=4
|max speed kmh=670
|ceiling ft=30000
▲|cruise speed alt=349 knots
▲|range alt=4,855 nm
}}
==See also==
{{Portal|Aviation|Canada
{{aircontent
|related=
* [[Bristol Britannia]]
* [[Canadair CP-107 Argus]]
* [[Conroy Skymonster]]
|similar aircraft=
|lists=
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===Notes===
{{Reflist|30em}}
===Bibliography===
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* [https://web.archive.org/web/20101205221238/http://www.airforce.forces.gc.ca/v2/equip/hst/yukon-eng.asp DND – Canada's Air Force – The Canadair CC-106 Yukon]
* [http://aviation-safety.net/database/type/type.php?type=132 Detailed listing of all CL-44 accidents]
* [http://web.archive.org/web/20121103055049/http://www.flightglobal.com/pdfarchive/view/1958/1958-1-%20-%200905.html "Canadair CL-44"] a 1958 ''Flight'' article archived at the Internet Archive
{{Canadair}}
{{CF aircraft}}
{{Aircraft manufactured in Canada}}
{{Authority control}}
{{DEFAULTSORT:Canadair Cc-106 Yukon}}
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