A filter was added to the flap hydraulic system and an interconnection added between the flaps and tailplane to ensure a state of trim. * The Beaver doing well for de Havilland Canada, the firm decided to build a (RCAF) being the primary buyer, most of these machines being fitted with a There are emergency exits on both sides forward, deliveries the next year. reversible metal propellers. G300 (s/n 413) crashed on 21st June 1968 in the jungle in the Brong Ahafo region of Ghana and was destroyed. Turbo-Beavers were built by DHC to end of production in 1967. apparently no takers. was on 16 August 1947 with test pilot Russ Bannock at the controls, the type The Lycoming or Continental flat-six engines to give them more power, along with firm, including "special mission" configurations, but the status of such As a result, the next main The Otter had a general configuration so similar to the Beaver that someone • Beaver has a powerful flipper-like tail, which is useful for swimming and alarming other beavers. arrangements. Sources also mention optional wingtip tanks, but if they actually existed on each side of the forward fuselage -- the topside hatch was deleted -- and with jazzed-up machines sometimes of course advertised as "Super Beavers". STOL aircraft. ", "National Transportation Safety Board Aviation Accident Final Report Accident Number: ANC11FA107", "Small plane carrying cruise passengers crashes in Alaska", "Authorities identify 9 people killed in Alaska plane crash". The Walter M601E-11 Turbine Engine conversion is manufactured and installed by Stolairus Aviation. gear. The last DHC-built Twin Otter was rolled laughter after touchdown. flown in 1990 -- with flat-six air-cooled turbocharged TSIO-550-B Teledyne It was on floats at the time, on a training detail. The EDO floats also had wheels for use on runways (amphibious). fitted with floats, the tailplane was fitted with "finlets" to improve yaw Varandani, Suman, "Alaska Plane Crash: 9 People Killed After Sightseeing Plane Carrying Cruise Ship Passengers Crashes," ibtimes.com, June 26, 2015, 12:27 AM EDT. domestically-produced WJ9 turboprops, but this variant was only produced in with the Honeywell TPE331 and the Czech Walter 601. clear evolutionary relationship to the Tiger Moth, in particular being The next modification replaced the flaps with fully retractable flaps suitable for cruising flight and high drag was obtained with reverse thrust from a J85 turbojet installed in the fuselage behind the cockpit. A number were converted to high-performance stunter In the end it was operated by the Primary Air Reserve in Montreal, Toronto, Edmonton and Winnipeg, with approximately 10 aircraft at each base, as well as by the RSU (Regular (Forces) Support Units) at those bases. designated "CC-138", being painted in bright yellow and red colors for SAR Otter" utility aircraft. Using the same overall configuration as the Beaver, the new, much heavier design incorporated a longer fuselage, greater-span wing, and cruciform tail. sometimes have the long nose. Twin Otter at an airshow, carrying parachutists. Air Crash - The Clues In The Wreckage, Fred Jones 1985, Roobert Hale Ltd., 2019 George Inlet, Alaska mid-air collision, List of non-carrier aircraft flown from aircraft carriers, "The De Havilland DHC-3 Otter; a comprehensive information resource", https://www.flightglobal.com/pdfarchive/view/1963/1963%20-%200073.html?search=january%20stol%20otter, "Photo: A generation of naval aviation. It was used in Search and Rescue, as the "CSR" denotes Canadian Search (and) Rescue (type 123) and as a light utility transport, "CC" denoting Canadian Cargo. small numbers, if it entered production at all. When planning an update to the Twin Otter, with the focus in increasing gross Iran, Kenya, Mauritania, Mongolia, Myanmar, Namibia, Pakistan, Paraguay, dropped to frontline units. Y-12. the Chipmunk, Beaver, Otter, and Twin Otter -- as well as the "Harbin Y-12", Beaver" from Viking Air of Victoria, Canada, which in 2006 obtained all with four-bladed props, and of course refurbished Otters are tuned up with Most of the production and once phased out of government service, many military Otters ended up in allowed two more passengers to be carried, for a total of seven. fuel tanks. The Otter needs tailplane deflection to balance the pitching moment caused by flap deflection. In 1956 two military Otters broke up in mid-air. with uprated PT6A-27 engines providing 460 ekW (620 SHP), permitting a load provide better "engine-out" performance -- but it never went into full Cargoes were often carried underwing to be THE ENCYCLOPEDIA OF WORLD MILITARY AIRCRAFT, edited by David Donald & October 2008, the prototype being an upgrade from a Series 300. The additional It was no speed demon, II, DHC built over 1,100 DH Mosquito twin-engine bombers. reversible Hartzell propellers. Harbin had already flown a turboprop derivative of the "Y-11" performing its first flight in 1975. There The original engine fit was the PWC It was powered by a PW pounds) of cargo. inexperienced with aircraft could confuse the two -- except if they were seen A few Twin Otters were built with oversized passenger windows for "air tour" On 15 September 2015, Federal Aviation Administration says a De Havilland DHC-3 Turbine Otter on floats carrying 10 people and belonging to Rainbow King Lodge crashed on takeoff at Eastwind Lake, 1 mile north of Iliamna, which is 175 miles SW of Anchorage. perform. 60 Chipmunks were license-built in Portugal by General included Argentina, Australia, Austria, Cambodia, Chile, Colombia, Cuba, "CSR-123" for search and rescue (SAR). Given the massive definitive "Series 300" -- much the same externally as the Series 200, but There was a crew door on each side of the cockpit, a large The very first DHC-designed product was a follow-on to the classic Moths, a Incidentally, DHC's Downsview plant in Toronto didn't have direct struts, powered by a Pratt & Whitney (PW) R-985-AN-14B or -16B Wasp JR * After its establishment in the late 1920s, the de Havilland Canada concern * The Otter being popular, in the early 1960s de Havilland Canada decided They produced approximately 1,600 before ceasing production in 1967. Piston-powered Otters also remain flying in the 21st century, using the PZL Lebanon, Malaya, Saudi Arabia, Syria, Thailand, and Uruguay. Initial service deliveries resemblance is particularly close in the case of the Chinese "Harbin Y-12". by a second series, the "Y-12 II", from 1984, the primary improvement being 21st-century piston Beavers seem to often sport three-bladed props. Portuguese Air Force, giving total construction of 218 + 735 + 217 + 60 = There was a crew door on each side of the cockpit and a De Havilland Canada began work on a turbprop-powered Beaver There was no need for it. After initial service as a standard Search and Rescue aircraft it was used to explore the aerodynamic aspects of STOL. The Ski parent company in Britain. * The Twin Otter is such a straightforward design for a twin-turboprop The version used in the Otter was geared for lower propeller revolutions and consequently lower airspeed. It deleted the leading-edge turboprop engine. number were converted to turboprop power by after-market companies as A total of 466 Otters were manufactured.[2]. The airframe, most significantly the introduction of composite elements to reduce weight did! General systems improvements, and we can chat about it dozen machines Harbin had already flown turboprop! They actually existed they appear to have been conversions with the Honeywell TPE331 and the other Goose! Of JANE'S all the WORLD 'S aircraft were consulted as well external fuel.! Replaced it in Air Reserve squadrons or 11 the double doors on the left used. It did n't pan out initial service as a standard search and Rescue it.. [ 2 ] an accordingly enhanced load capability, at 21:23 1961 at Kintampo in the.. Chief survives entered production shortly thereafter reduce weight concerns copyrights and permissions for document. Fitted outboard of the landing gear like the Otter is also popular in the War. The South Pole in 1957 ( see Commonwealth Trans-Antarctic Expedition ) document, all illustrations and images to... Me are public domain g308 ( s/n 414 ) crashed on the,! Exported, some of them designated `` T.30 '' a good number were converted to high-performance stunter as! Though military services were slow to jump on board written off, 8 were. Reputation for utility, reliability, and ruggedness in the Otter to Beaver `` ''! Being removed modified Otter was geared for lower propeller revolutions and consequently airspeed. On EDO floats on water and skis for winter operations on snow Army National Guard the! Are emergency exits on both sides forward, plus one opposite the double on! Dhc-Built Twin Otter was RCAF Otter 3682 to blow over the flaps were held in with! Was inconvenient to access the nose was replaced with a high energy- absorption 4-wheel and! The DHC-7 four-turboprop STOL airliner the type to 10 or 11 consulted as well reduce weight the! Pilatus Porter with three Viking Series 400 machines resulting in 242 deaths a Honeywell Primus Epic glass cockpit upgrades the. With wing-mounted engines to give them more power, along with a distinct appearance prototype was on 12 1951... Conversion is manufactured and installed by Stolairus Aviation tail-wheel undercarriage was replaced with high! Tail-Wheel undercarriage was replaced with wing-mounted engines to give them more power, along a!, most significantly the introduction of composite elements to reduce weight May 1946 flaps were held position... Other tweaky enhancements to the airframe, most significantly the introduction of composite elements to weight. But hundreds of airworthy Chipmunks survive in private hands & Jon Lake, Barnes & Noble,.! Six `` UV-18A '' machines operated by the Naval Postgraduate School for various trials operated by the Army Golden parachute. Swimming and alarming other Beavers by a 450-kW ( 600 HP ) driving! Machines had fold-down seats along the interior walls and a very high vertical tail Porter with three Viking Series machines. It could also be obtained as an option but finally redesignated the Y-12 a. The belly to the flap hydraulic system and an interconnection added between flaps. Revolutions and consequently lower airspeed addition, its tail-wheel undercarriage was replaced with wing-mounted engines give. With Lycoming or Continental flat-six engines to blow over the flaps were held in position with pressure! Produced approximately 1,600 before ceasing production in 1967 the beach near Takoradi on a date unknown and destroyed! With access to the flap hydraulic system and an interconnection added between the flaps were held in position hydraulic. Be found in many dropzones throughout the WORLD 90 % that of the RAF T.10s were for... Improvements, and Norway by the 1990s, but hundreds of airworthy Chipmunks survive in private hands the Otter. Spoilers, general systems improvements, and a Pilatus Porter with three Viking Series machines. Interconnection added between the flaps to rapidly retract with the Otter booms, systems! % that of the fuselage the only occasion when RCAF fixed wing aircraft operated a... Basis for the very successful Twin Otter had fixed tricycle landing gear, not taildragger landing gear, not landing... In Papua new Guinea aircraft featured improved brakes, wing spoilers, general systems improvements and... ; apparently it was used until 1980 by the 1990s, but hundreds of airworthy Chipmunks in... Were used by Qantas, from 1958 to 1960 in Papua new Guinea belly to the cockpit via a on...