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de Havilland Canada DHC-6 Twin Otter Regional Airliner Regional Transport |
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DESCRIPTION:
Building on its DHC-3 Otter single-engine transport, de Havilland Canada announced the development of the twin-engine DHC-6 in 1964. Carrying 13 to 18 passengers, the Twin Otter was optimized for short-range routes where short takeoff and landing abilities were important. The DHC-6 can be equipped with standard wheel landing gear as well as skis or floats for operations on snow and water. This versatility has not only attracted a variety of civil operators, but also many customers in military services and other government agencies. The aircraft has also proven popular with research institutions like NASA and NOAA. The principal models include the original Series 100, a heavier Series 200, and the Series 300 with uprated engines and room for up to 20 passengers. Specialized military versions have also been built, optimized for duties such as armed transport and maritime reconnaissance. Production of the Twin Otter ended in 1988 after 844 and been built, and a replacement called the DHC-9 has been under study. Nevertheless, the Twin Otter has remained so popular that the Canadian company Air Viking purchased the production rights and announced it would restart manufacturing of an improved Series 400 model in 2008.
Data below for DHC-6 Series 300 |
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| HISTORY: | |
| First Flight |
(Series 100) 20 May 1965 (Series 400) 1 October 2008 |
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Service Entry
|
1966
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| CREW: |
two: pilot, co-pilot
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| PASSENGERS: |
(typical) 18-20 (Series 300) 20 in one-class |
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ESTIMATED COST:
|
unknown
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| AIRFOIL SECTIONS: | |
| Wing Root | NACA 63A516 mod |
| Wing Tip |
NACA 63A516 mod
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| DIMENSIONS: | |
| Length | 51.75 ft (15.77 m) |
| Wingspan | 65.00 ft (19.81 m) |
| Height | 19.50 ft (5.94 m) |
| Wing Area | 420 ft² (39.02 m²) |
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Canard Area
|
not applicable
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| WEIGHTS: | |
| Empty | 7,415 lb (3,365 kg) |
| Normal Takeoff | unknown |
| Max Takeoff | 12,500 lb (5,670 kg) |
| Fuel Capacity |
internal: 2,500 lb (1,135 kg) external: not applicable |
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Max Payload
|
2,500 lb (1,135 kg)
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| PROPULSION: | |
| Powerplant | two Pratt & Whitney Canada PT6A-27 turboprops |
| Thrust |
1,304 ehp (942 ekW)
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| PERFORMANCE: | |
| Max Level Speed |
at altitude: 215 mph (340 km/h) at 10,000 ft (3,050 m) at sea level: unknown |
| Initial Climb Rate | 1,600 ft (490 m) / min |
| Service Ceiling | 26,700 ft (8,140 m) |
| Range |
typical: 700 nm (1,295 km) max payload:100 nm (185 km) |
| g-Limits |
unknown
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| KNOWN VARIANTS: | |
| Series 100 | First production model with a short nose; 115 built |
| Series 200 | Model with a longer nose, increased baggage capacity, and higher maximum takeoff weight; 115 built |
| Series 300 | Improved Series 200 model with uprated engines and greater maximum takeoff weight, later models able to carry up to 20 passengers |
| Series 300M | Military transport built in two versions: basic model and counter-insurgency model equipped with machine guns and underwing pylons |
| Series 300MR | Maritime reconnaissance model featuring a search radar; 1 built for Senegal |
| Series 300S | Model with 11 seats and improved STOL features for use in small inner-city airports; 6 built |
| Series 400 | Proposed improved model to meet more stringent US noise requirements; not built |
| Series 400 | Revived production model manufactured by the Canadian firm Viking Air with a new PT6A-34/35 engine; at least 40 to be built |
| CC-138 | Search-and-rescue model used by the Canadian military |
| UV-18A | Command transport based on the Series 300 model and used by the US Army; 6 built |
| UV-18B |
Parachuting model based on the Series 300 and used by the US Air Force Academy; 2 built
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| KNOWN OPERATORS: | |
| Civil |
AAI Adlair Aviation Aerolinea de Antioquia (ADA) Aeroperlas Aerovias DAP Aero Zambia Air Alpes Air America Air BC Air Burundi Aircalin Air Djibouti Air Ecosse Air Greenland Air Iceland Air Limousin Travail Aérien (ALTA) Airlines PNG Air Madagascar Air Moorea Air Pacific Air Panama Air São Tomé and Príncipe AirSea Lines Air Sénégal Air Seychelles Air Tindi Air Turks & Caicos Air Vendée Air West Alaska Airlines Aloha Island Aurigny Brymon Cameroon Airlines Carib Aviation Cayman Airways China Flying Dragon Aviation Continental Express CrownAir Crown Airways Dorado Wings Eagle Air (Iceland) Eastern Metro Express/Metro Airlines (USVI) Emirates Era Evergreen Helicopters Flugfélag Norðurlands Fraser Valley Grand Canyon Airlines GT Air Gulf Air Harbour Air Intermountain Aviation Isles of Scilly Skybus Jersey European Kenn Borek Air Lab Air Labrador Airways La Ronge Lake Union Lina Congo Loganair Malaysian Airline System (MAS) Maldivian Air Taxi MASWings Manx Merpati Nusantara Airlines Metro Airlines Metropolitan Mountainwest Nature Air Nepal Airlines NorOntair NT Air Pacific Sun Pilgrim Airlines Ptarmigan Raecom Rio Royal Nepal Airlines Seaborne Airlines Shawnee Airlines Solomon Airlines St. Lucia Airways SCAT Scenic Schreiner Airways Schreiner Airways Cameroon Skybus Skydive Spacegrand Swedair Talair Touraine Air Transport (TAT) Trigana Air Service Trans Maldivian Airways Trans Provincial UNICEF Unitair US Air Express Vaengir Walker's Cay West Coast West Flight Wiggins Airways Windward Islands Airways International Yeti Airlines |
| Government/Military |
Afghanistan Argentina (Air Force, Army, Navy) Australia Benin British Antarctic Survey Canada Chile Colombia Dominican Republic Ecuador Ethiopia France (Air Force, Army) Haiti Jamaica Malaysia National Aeronautics & Space Administration (NASA) National Oceanic and Atmospheric Administration (NOAA) Nepal Netherlands Norway Panama Paraguay Peru Senegal (300MR) Sudan Switzerland Uganda United States (Air Force, Army) Venezuela Vietnam (Navy) |
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