The original de Havilland Twin Otter,
designed in 1964, and built in 1965, seated 13 to 18 passengers.
It was developed for short-haul commuter services. The Twin
Otter was also built for short takeoffs and landings, which made
it very useful in places where there were few airfields.
The Twin Otter was well known for being very rugged and
Changes to the plane were initially made in 1968 through the
Later in 1969, the 300 series was developed with
more powerful engines, which allowed for an additional 450
kilograms of takeoff weight. Passenger room was increased to 20
Made in Canada, the Twin Otter is considered to be one of the
most successful aircraft to be used commercially. It continued
to be produced until 1988 when over 800 were made.