The Short SC.7 Skyvan (nicknamed the "Flying Shoebox")[1] is a British 19-seat twin-turboprop aircraft first flown in 1963, that was manufactured by Short Brothers of Belfast, Northern Ireland. Featuring a basic rugged design and STOL capabilities, it was used in small numbers by airlines, and also by some smaller air forces. In more recent years the remaining examples were mostly used for short-haul freight and skydiving.
In 1958, Short was approached by F.G. Miles Ltd (successor company to Miles Aircraft) which was seeking backing to produce a development of the Hurel-Dubois Miles HDM.106 Caravan design with a high aspect ratio wing similar to that of the Hurel-Dubois HD.31. Short acquired the design and data gathered from trials of the Miles Aerovan based HDM.105 prototype. After evaluating the Miles proposal, Short rejected the Caravan.[2] They developed their own design for a utility all-metal aircraft which was called the Short SC.7 Skyvan. The Skyvan is a twin-engined all-metal, high-wing monoplane, with a braced, high aspect ratio wing, and an unpressurised, square-section fuselage with twin fins and rudders.[3] It was popular with freight operators compared to other small aircraft because of its large rear door for loading and unloading freight. Its fuselage resembles the shape of a railroad boxcar for simplicity and efficiency.
A Short Skyvan (centre) together with the two types developed from it, Short 360 (front) and Short 330 (rear) at 1982 Farnborough Airshow
Construction started at Sydenham Airport in 1960, and the first prototype first flew on 17 January 1963, powered by two Continental piston engines.[4] Later in 1963, the prototype was re-engined with the intended TurbomecaAstazou II turboprop engines of 520 shp (390 kW);[5] the second prototype (the first Series 2 Skyvan) was initially fitted with TurbomecaAstazou X turboprop engines of 666 shp (497 kW) but subsequently the initial production version was powered by TurbomecaAstazou XII turboprop engines of 690 shp (510 kW). In 1967, it was found that the Astazou XII was temperature limited at high altitudes.[6] Consequently, in 1968, production switched to the Skyvan Series 3 aircraft, which replaced the Astazou engines with Garrett AiResearch TPE331 turboprops of 715 shp (533 kW). A total of 149 Skyvans (including the two prototypes)[7] were produced before production ended in 1986.
Operational history
Skyvan 3 converted for survey work by Questor Surveys, 1975
Skyvans served widely in both military and civilian operations, and the type remained in service in 2009 with a number of civilian operators, and in military service in Guyana and Oman.
Skyvans continue to be used in limited numbers for air-to-air photography and for skydiving operations. In 1970, Questor Surveys of Toronto Canada converted the first of two Skyvan 3s for aerial geological survey work. The Collier Mosquito Control District uses Skyvans for aerial spraying.[8]
Skyvan G-BEOL starred in the film Kingsman Secret Service as the aircraft trainee kingsmen skydived from.
TurbomecaAstazou powered production. 8 Series 2 produced (including the second prototype).
Skyvan 3
Garrett TPE331 powered production. 140 produced (of all Series 3 versions) plus 2 Series 2 were converted.[9]
Skyvan 3A
higher gross weight version (MTOW 6,214 kg, 13,700 lb).[10]
Skyvan 3M-100, -200, -400
military transport versions with higher gross weights; 3M-200 (MTOW 6,804 kg, 15,000 lb); 3M-400 as per Skyvan 3A.[11] Used for supply dropping, assault transport, dropping paratroops, troop transport, cargo transport, casualty evacuation, plus search and rescue missions.[12]
Skyliner 3A-100
deluxe all-passenger version, large cargo door removed, cabin accessed through standard size side door.[12]
Royal Thai Police compound at Bangkok Don Mueang-DMK, October 2014. In view are three Shorts SC.7 Skyvans, a Shorts SD3-30, plus three PC 6 Turbo Porters, and a Fokker F-50
^The UAE is a federation of 7 Sheikdoms, each of which maintain a small army known as the Amiri Guard. One of which, the Emirate of Sharjah, purchased two Skyvan 3M's in the 1970's, and then sold them to the UAE air force in 1995.[32]
^Cooper, Tom; Grandolini, Albert (2018). Showdown in Western Sahara, Volume 1: Air Warfare Over the Last African Colony, 1945-1975. Warwick, UK: Helion & Company Publishing. p. 47. ISBN978-1-912390-35-9.
^Cooper, Tom (2017). Hot Skies Over Yemen, Volume 1: Aerial Warfare Over the South Arabian Peninsula, 1962-1994. Solihull, UK: Helion & Company Publishing. p. 42. ISBN978-1-912174-23-2.
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