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| In 1964 de Havilland Canada announced that it was developing a twin-turboprop high-wing monoplane with STOL capability to provide accommodation for 13 to 18 passengers. Identified as the de Havilland Canada DHC-6 Twin Otter, the first of an initial batch of five made its maiden flight on 20 May 1965. Powerplant of the first three aircraft consisted of two 432kW Pratt & Whitney Aircraft of Canada PT6A engines, but the fourth and subsequent examples of this first Twin Otter Series 100 production version had PT6A-20 engines of similar output. Design of the aircraft's wing includes double-slotted trailing-edge flaps and ailerons which can be drooped simultaneously with the flaps to enhance STOL performance. Fixed tricycle landing gear can have optional float or ski installations, as well as the standard wheels.
Intended primarily for service with commuter or third-level airlines, the Twin Otter has nevertheless seen wide use with air forces and government agencies. Military operators include Argentina, Canada, Chile, Ecuador, Ethiopia, France, Haiti, Jamaica, Nepal, Norway, Panama, Paraguay, Peru, the USA and Venezuela.
The first Twin Otter Series 100 entered service in 1966, and, following manufacture of 115 of that version, production switched to the Twin Otter Series 200. It differed by having increased baggage capacity in a lengthened fuselage nose and was certificated for operation at a higher gross weight. After 115 had been built the production Twin Otter Series 300 was introduced, this having more powerful PT6A-27 engines which make possible an increase of almost 454kg in maximum take-off weight. Later production aircraft had a 20-seat commuter interior as standard and all floatplane versions, irrespective of series, retain the shorter fuselage nose of the original Series 100. Specialised equipment that has been developed to enhance the capabilities of these popular aircraft includes a ventral pod to carry 272kg of freight and an expendable fabric membrane tank holding 1818 litres of water for water-bombing fire-fighting operations.
In 1982 DH Canada offered two specialised military versions designated Twin Otter Series 300M basic military transport or COIN version armed with cabin-mounted machine-guns and underwing hardpoints, and the 300MR maritime reconnaissance version equipped with search radar, comprehensive avionics and a wing-mounted searchlight. Although a prototype 300MR was flown, the only buyer was Senegal with a single aircraft. When the last Twin Otter was delivered in December 1988 production had reached 844. Studies for a successor are designated DHC-9.
VARIANTS
Twin Otter 300S: designation of six aircraft fitted with 11 seats, an improved high-capacity anti-skid braking system and wing spoilers, built for the 1973 experimental Air Transit service linking downtown STOL airports in Montreal and Ottawa.
Twin Otter Series 400: proposed development to meet US FAR 36 noise regulations. Not built.
UV-18A: two standard Series 300s delivered October 1976 onwards to the US Army Alaska National Guard, followed by four more in 1979 and 1982. Operating on wheels, floats or skis they are used for command, personnel or logistic flights within Alaska.
UV-18B: two standard Series 300s delivered to the US Air Force Academy in 1977 and used for sporting parachuting activities.
| MODEL | DHC-6 Twin Otter Series 300 |
| ENGINE | 2 x Pratt & Whitney Aircraft of Canada PT6A-27 turboprops, 486kW |
| WEIGHTS |
| Take-off weight | 5670 kg | 12500 lb |
| Empty weight | 3363 kg | 7414 lb |
| DIMENSIONS |
| Wingspan | 19.81 m | 65 ft 0 in |
| Length | 15.77 m | 52 ft 9 in |
| Height | 5.94 m | 20 ft 6 in |
| Wing area | 39.02 m2 | 420.01 sq ft |
| PERFORMANCE |
| Cruise speed | 338 km/h | 210 mph |
| Ceiling | 8140 m | 26700 ft |
| Range | 1297 km | 806 miles |
| John Kelly, e-mail, 05.04.2024 05:23 I have a couple of twin otters / DHC-6 available for sale or long-term lease. Send me an email. reply | | Manny Puerta, e-mail, 08.03.2017 21:00 I was fortunate to be Flight Safety Toronto trained on the Twin Otter and fly it for a few years with an oil, gas and mineral exploration survey company for a few years. The Twin Otter is a very capable aircraft for the purpose it was designed, along with it being one of those aircraft that is really enjoyable to fly. reply | | Gary Lindrea, e-mail, 28.12.2013 19:17 Hello looking for dry /wet lease aircraft 5700klg or under for our new operation in cambodia please feel free to contact us
Aero cambodia airlines
Would consider joint venture
Thank you reply | | Barry, 12.11.2013 13:17 Since 2009 the design authority of this aircraft now lies with Viking Aircraft of B.C. They have reinstituted the production line and currently produce tbe Twin Otter series 300. reply | |
| | Kevin Wallace, e-mail, 13.11.2012 17:08 Looking for a DHC 6 300 or 400 Amphibian with a Sales Lease Agreement? If not, with a Long Term Lease. Thanks. reply | | barry hill, e-mail, 27.07.2012 08:51 we operated twin otter s /n 81 in Tasmania between 1968 through to 1972 with the CSIRO and the Hydro in Tassie making rain just thoughtsomebody may have the records as to where the aircraft finished its days reply | | argeo, e-mail, 20.07.2012 15:01 The aircraft in the picture lands at the only civil airport in the world which is actually a sea beach, on the Isle of Barra in Scotland. The World's only regular daily flight schedule times that vary with the tide. reply | | argeo, e-mail, 20.07.2012 15:01 The aircraft in the picture lands at the only civil airport in the world which is actually a sea beach, on the Isle of Barra in Scotland. The World's only regular daily flight schedule times that vary with the tide. reply | | Barry Hill, e-mail, 01.05.2012 02:23 What ever happened to Aircraft S /N 81 reply | | Oleg Pavlenco, e-mail, 24.03.2012 09:16 Hi
The national aero club OMAN wants to buy Twin Otter DHC6-400, for parachute team. Can help to have to us information or the help for to buy it
Regards
Oleg Pavlenco reply | | youssef, e-mail, 14.06.2011 18:58 Dear all,
One Twin otter and one helico 365 N offshore available for wet lease.
Regards
Youssef
HAS.AVIATION@YAHOO.FR reply | | Gabriel Narara, e-mail, 12.04.2011 07:15 Im seeking a jointventure partnership with any Charter Companies or individual aircraft owners to participate in the Miltimillion LNG project in Papua New Guinea. Spcefically in the Gulf and the Western Provinces. Aircraft type: DHC-6 Twin Otters reply | | John Wykeam, e-mail, 23.03.2011 04:47 What is the operating cost of a Twin Otter appreciate advice or full data.........jfkwykeam@gmail.com; thks reply | | MORALES, e-mail, 07.02.2011 19:40 QUISIERA ALQUILAR UNA AERONAVE TWIN OTHER POR 1 AņO POR FAVOR ENVIAR COTIZACION, PARA TRABAJAR EN EL PERU ENVIAR COSTO DE TRIPULACION, COSTO DE HORA, DETALLES TECNICOS, ETC.CONDICIONES DE ALQUILER GRACIAS reply | |
| | enriquebarberan, e-mail, 19.01.2011 14:46 Dear Sir or Madame
I am a Spanish student pilot d CESDA University and now i am doing my final degree Project. My project is the creation of an AOC with DHC 6 twin otter (amphibian).
The reason that I write you is because I need the manual of that aircraft, for the part b of the AOC.
I would be gratefully if you can let me a copy or PDF of that manual.
Best regards reply | | Dr.Charles Tannock, e-mail, 04.01.2011 13:54 We are interested to buy Twin Otter DHC-6-300 spare parts.if any one can provide then please contact us immediately.thank you! reply | | MR clifford C, e-mail, 14.12.2010 10:05 An official Broker of (AELS-Europe), in Nigeria & Egypt our base of operations our duty as their partners is to source for, and meet with Original selling-mandates, of Airline companies with used Commercial Aircrafts available for immediate sale. We honor the owner's contact that have the 100% right to quote the asking price of their used commercial aircraft available for serious buyers. our Mandates in Europe is a big buyer of used commercial aircraft, as long as they meet the required Standards, so if you have any available aircraft, from a reliable owners you can please get in touch with us, so that i can forward to you the details needed for due clarifications on the available Aircraft, as that will mean getting set for REAL BUSINESS TALK. All your questions are welcome as that is a map for the way forwards in our transactions. Thank you and sincerely hope to hear from you again.
Mr. Clifford C.A
Africa Brokers (AELS,NL,Europe).
Abuja,Nigeria
+234 8084 93 06 92
+234 7089 24 41 79
+234 01 761 57 57
Fax:+44 700-594-2192 Contct: Alex (outside Africa) reply | | yasir mahmood, e-mail, 29.10.2010 10:57 Dear fellows,
i am in an immense need of twenty seater plane, if there is any avaialability of twenty seater plane, please do contact me, it will be appreciated.
my contact number is +923465357109
email address: yasir_phool25@yahoo.com reply | | Mahesh Rimal, e-mail, 06.10.2010 16:24 We have 97 parts of Twin Otter for sale here in Kathmandu,Nepal.Please contact for the list.Best regards reply | | Athar Butt, e-mail, 03.10.2010 05:39 I am in immediate requirement ot tw[n otter on lease /purchase any one having one available may kindly contact me on my email reply |
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