Aircraft Fleet
The TAA de Havilland DHC-6 Twin Otter was one of the toughest and most versatile aircraft to wear TAA colours — a twin-engined STOL workhorse that opened up New Guinea's highlands and outback Queensland's short, rough airstrips to regular air services.
Fleet History
TAA's first Twin Otter, VH-TGR, was accepted at de Havilland Canada's Downsview plant on 29 July 1966 and arrived in Sydney the following month. It was based in Papua New Guinea to operate TAA's Sunbird services, flying its first revenue service at the end of October 1966. Further aircraft followed over the next few years across the Series 100, 200 and 320 variants, registered in the VH-TG- block, as TAA built up a fleet suited to New Guinea's mountain airstrips and Queensland's short regional and island routes.
Like several other TAA aircraft of the era, individual planes were given names — VH-TGS was named Marawaka, and VH-TGH carried the names Daru and later Charles Grimes after it moved from New Guinea to TAA's mainland network.
More detailed information on the TAA de Havilland DHC-6 fleet can be found here.

Design and Development
De Havilland Canada began development of the Twin Otter in 1964 as a twin-engined successor to its earlier single-engine DHC-3 Otter, which had itself been in production since the early 1950s. The prototype first flew on 20 May 1965, and the aircraft entered production shortly after.
Replacing the Otter's single piston engine with two Pratt & Whitney Canada PT6A turboprops gave the new aircraft significantly improved reliability, power and short-field performance, while retaining the fixed tricycle undercarriage and STOL (short take-off and landing) characteristics that had made the Otter so popular with bush and regional operators. TAA's earlier Series 100 and 200 aircraft were powered by PT6A-20 engines, while the later Series 320 aircraft used the more powerful PT6A-27.
New Guinea and Queensland Service
TAA's Twin Otters were well suited to two very different environments. In Papua New Guinea, they operated on the Sunbird services network, reaching short highlands airstrips that TAA's larger Douglas DC-3s, Friendships and Bristol Freighters could not always serve. VH-TGH, for example, spent its first three years with Trans-Australia Airlines of Papua New Guinea before returning to the Australian mainland in October 1973.
On the mainland, the Twin Otter helped extend TAA's reach into the Gulf Country and Channel Country regions of outback Queensland, and operated island services along the Queensland coast, including the route from Mackay to Shute Harbour and Brampton Island. VH-TGH was damaged in a landing accident at Shute Harbour in November 1975 while operating on this network; it was repaired and returned to service.

Delivery Flights
The Twin Otters were built at de Havilland Canada's Downsview plant in Ontario and flown to Australia by contracted ferry crews — a long journey across the Pacific in a relatively short-range aircraft. Not every delivery went to plan.
VH-TGE, ordered new by TAA, was rolled out at Downsview in October 1969 and departed on its delivery flight that December. On 5 January 1970, while flying the Honolulu to Pago Pago sector, the aircraft ran short of fuel in strong headwinds and made a forced landing on Tau Island, American Samoa, around 65 miles short of its destination. The aircraft was badly damaged; its intended Australian registration was never taken up, and it did not enter TAA service. The airframe was later recovered, rebuilt, and went on to a long working life with other operators overseas.
Technical Snapshot
Legacy
The TAA de Havilland DHC-6 Twin Otter never carried the passenger numbers or public profile of TAA's trunk-route jets, but it played an essential role in the airline's story. It extended TAA's reach into places its larger aircraft could never serve — short highlands strips in New Guinea, remote outback communities across the Gulf and Channel Country, and small island destinations along the Queensland coast.
For the people living in these communities, the Twin Otter was often the only reliable link to the outside world — carrying passengers, mail, freight and supplies to and from places no road, and few other aircraft, could reach. As TAA progressively retired its Twin Otters through the late 1970s and 1980s, several passed to Bush Pilots Airways, later Air Queensland, which continued to serve the same Queensland communities before joining the Australian Airlines regional network in 1988.
The DHC-6 remains in production today, more than half a century after its first flight — a testament to the enduring value of the rugged, go-anywhere design that made it so useful to TAA's regional and territorial operations.
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