DHC-6 Twin Otter
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DHC-6 Twin Otter

DHC-6 Twin otter

DHC-6 Twin Otter, turboprop aircraft developed by «de Havilland Canada» having a shorter takeoff and landing, and intended for passenger traffic on domestic airlines.

Excellent take-off and landing performance, the ability to land on a suitable landing area, as well as the ability to install the chassis wheelbase, ski or float base made DHC-6 Twin Otter versatile light transport aircraft.

In November 1963, the company «de Havilland Canada» started work on designing a twin-engined variant of aircraft DHC-3 Otter. Get in a subsequent designation - DHC-6. Construction of the first prototype DHC-6, began in July 1964 years.

DHC-6 Twin Otter snow

The appearance of the aircraft has changed. The bow section has been redone. The wingspan of the aircraft has been increased. Two Pratt & Whitney Canada PT6A hp 550 turbo-prop engines were installed on the aircraft. each. The aircraft received the form of a low-profile monoplane with a high wing with a two-slot flap design. The aircraft fuselage is all-metal with a cruciform tail. The landing gear consists of three non-retractable racks, which, if necessary, can be equipped with floats, skis, ordinary or "tundra" wheels. The new aircraft, like its predecessor, DHC-3, turned out to be reliable, unpretentious in operation and easy to maintain by plane with a short run and run distance.

For the first time, the DHC-6 took to the 20 sky on May 1965 from Downsview Airport in Ontario. During all the tests the aircraft showed excellent performance. After all the tests began mass production of the aircraft. The first production version of the aircraft, received the designation DHC-6 Series 100, entered the airline «Trans Australia Airlines». DHC-6 Series 100 production continued until April 1968. A total of 115 aircraft of this series were built. After that, de Havilland Canada began work on the production of the DHC-6 Series 200. The “200th” series differed from the previous series, with its elongated nose, in which an additional luggage compartment was placed, as well as an increased rear luggage compartment.

DHC-6 Twin Otter salon 34

Starting in the 1969 year, production of the DHC-6 Series 300 aircraft began. On the aircraft of this series, the fuel stock was increased and new, more powerful Pratt & Whitney Canada PT6А-27 turbo-prop engines were installed. The power of each motor was 620 HP. Also, it became possible to install additional fuel tanks on the wing tips. On the left side of the aircraft was installed double cargo door and a separate door in the cockpit. The bow was the same as the Series 200, except for the water version with floats, which had a shortened nose from the Series 100.

In 1988 the production of aircraft DHC-6 was discontinued. But in the middle of the year 2007 Aircraft company «Viking Air» continued construction of these aircraft under the designation DHC-6 Twin Otter Series 400.

The new Pratt & Whitney Canada PT6A-34 engines were installed on the aircraft of this series. Also optionally, PT6A-35 motors can be used.

During the construction of this series, composite materials were used to facilitate the construction and increase the load capacity. Beginning with 2009, the DHC-6 Series 400 began shipping to the airline.

DHC-6 Twin Otter was admitted into a well in the following versions:

- UV-18B - the aircraft supplied to the US Air Force for testing parachute jumps.

- UV-18A - the plane is used as the light air transporter by the US Army in Alaska.

- CC-138 - search and rescue aircraft, delivered to the armed forces of Canada.

DHC-6 Series 320 - aircraft built specifically for the Australian regional airlines.

DHC-6 Series 300M - a multi-purpose military transport aircraft

DHC-6 Twin Otter Salon

Today produced 850 aircraft DHC-6 Twin Otter.

Specifications aircraft DHC-6 Twin Otter

First flight DHC-6 Twin Otter: 20 May 1965 of the year

Years of production of DHC-6 Twin Otter (Series 100, 200, 300): from 1965 to 1988 year

Years of production of DHC-6 Twin Otter (Series 400): c 2008 of the year

Length: 15,77 m.

Height: 8,94 m.

Wingspan: 19,81 m.

Empty weight: 3365 kg.

Wing area: 39,02 sq.m.

Cruising speed: 265 km / h..

Maximum speed: 340 km / h..

Ceiling: 8140 m.

Range: 1700 km.

Engines: 2 TVD x Pratt & Whitney PT6A-27

Crew: 1-2 people

Number of seats: 20 places

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