PILOT’S de Havilland Canada Dash 7

A 1970s STOL aircraft

As is often the story at the de Havilland factory, the four-engine turboprop Dash 7 owes its design to a smaller predecessor, namely the DHC-6 Twin Otter, which in turn was developed as a stretched version of the revolutionary DHC-2 Beaver.

The four-engine high-wing design casts an impressive stance on the apron.
The four-engine high-wing design casts an impressive stance on the apron. Andrew Underwood

Background

The Dash 7 takes what was great about the Twotter – its Short Take-Off and Landing (STOL) performance, and combines it with a larger pressurised cabin and retractable undercarriage. This gives the airframe the ability to carry 50 passengers at high speed, in and out of destinations with runways as short as 2,200ft (670m) that were previously off-limits to regional turboprops. Another iconic feature of the Dash 7 is its four sets of massive 11ft propellers, designed to be geared at a reduced rotation speed to comply with strict 1970-era noise restrictions.

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