DHC-6-400 Twin Otter

The DHC‑6‑400 Twin Otter, today produced by Viking Air under licence from Bombardier, is a rugged, high‑wing turboprop that has become an icon of short‑take‑off and landing (STOL) operations. Originating in the 1960s as the De Havilland Canada DHC‑6, the design was refined over decades, and in 2010 Viking Air acquired the type certificate and resumed production as the Series 400, integrating modern avionics, more powerful Pratt & Whitney PT6A‑34 engines and a strengthened airframe. The aircraft can carry up to 19 passengers or a mix of cargo and passengers, and it is capable of operating from unprepared strips, water, and snow thanks to optional floats or skis. Its 1,200‑foot take‑off distance, excellent climb performance, and simple mechanical systems make it popular with regional airlines, government agencies, and humanitarian organisations worldwide. The Twin Otter’s reliability and versatility have supported polar research, bush flying in Alaska and Canada, and emergency medical evacuations in remote locations. By blending classic STOL capability with contemporary technology, the DHC‑6‑400 continues to demonstrate why the Twin Otter remains a workhorse of utility aviation. Its low operating cost and ease of maintenance have ensured a strong resale market, keeping fleets active for decades.