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      Twin Otter Series 400 
  • In 2001, the twin otter was chosen as the only aircraft capable of performing the South Pole evacuation flight of a critical patient under extreme -60°C conditions.
  • NASA’s Glenn Research Center operates its Twin Otter in treacherous conditions for icing research.
  • Trans Maldivian Airways (TMA). is the largest Twin Otter operator in the world, operating 44 Twin Otters internationally. Configured with straight floats enables TMA to operate the largest regional commuter Twin Otter seaplane operation, located in the Indian Ocean.
  • British Antarctic Survey operates four Twin Otters, of which one has a full remote sensing capability. In a typical season the planes will arrive in the Antarctic in late October and depart in early March. In total they will fly for around 1300 hours in the Antarctic supporting fifteen field projects.
  • For more information:
    Phone: (250) 656-7227

History of de Havilland

IT IS HARD TO IMPROVE ON A LEGEND... Our solution? Start again, providing the performance, reliability and versatility that has come to be expected from the twin otter in over 40 years of worldwide operations.

Still Canada's most successful 19-seat commercial aircraft program with more than 800 aircraft built, the Twin Otter is popular for its rugged construction and useful STOL performance.

Perhaps the best testimony to the timelessness of the Twin Otter’s design is the fact that it remains today the largest-selling 19-passenger commuter airplane in the world.

The de Havilland Twin Otter is a highly maneuverable, versatile aircraft which can be flown safely at various speeds from 80 to 160 knots. The Twin Otter is a high winged, un-pressurized, twin engine turbine powered aircraft ideally suited to operate in all conditions and climates.

Around the world in jungles, deserts, mountains, the Arctic, and anywhere where rugged reliability and short-take-off-and-landing are required you will find the hard working Twin Otter. Adding to that versatility the Twin Otter can be fitted with wheels, skis or floats.

Well liked by operators for the easy maintenance offered by its fixed undercarriage, the Twin Otter’s two engine design also offers dependable passenger safety and confidence.


Maximum Takeoff Weight: 12,500 lb (5670kg)
Maximum Landing Weight: 12,300 lb (5579 kg)
Number Of Crew: 1 or 2
Number Of Passengers: 20
Fuel Capacities: Total – 378 US Gallons
Fuel Capacities: Optional Long Range – 89 US Gallons


Configuration All metal, non pressurized, high-wing monoplane and a construction with fixed tricycle (steerable nose) landing gear


Wing Span 65 ft (19.8 m)
Length 51 ft 9 in (15.77m)
Cabin Height 9 ft 8 in (2.95m)
Tail Height 19 ft 6 in (5.94 m)


Cabin Length 18 ft 5 in (5.61m)
Cabin Height 4 ft 11 in (1.50m)
Cabin Volume (usable) 384 cu ft (10.87 cu. m.)
Cabin Doors (left side) 50 in X 50 in (1.27m X 1.27m)
Cabin Door (right side) 30 in X 45.5 in (.76m X 1.16m)


Two, Pratt & Whitney Canada PT6A-34, single stage, free-turbine engines.


Two, Hartzell, HC-B3TN-3DY, three bladed reversible pitch, constant speed, fully feathering propellers. Optional 4-blade – type and configuration TBA


7100 lb (3221 kg)


STOL Takeoff and Landing Distance: 1200 ft (366m)
(Takeoff distance to 50 ft)

Maximum Cruise Speeds:
TAS Sea Level: 170 kt
          5,000 ft: 181 kt
        10,000 ft: 182 kt

Enroute Rate of Climb at Sea Level: 
(both engines at maximum climb power): 1600 ft/min

Service Ceiling - both engines at maximum climb power
(Rate of climb 1000 ft/min): 26,700 ft (8138 m)

Payload Range – at maximum cruise speed
Payload for 100 nautical mile (185km) range: 4280 lb (1941 kg)
Payload for 400 nautical mile (741 km) range: 3250 lb (1474 kg)

Maximum Range - zero payload
with Standard Tankage (2583 lb (1172 kg) fuel): 775 nm (1435 km)
with Long Range Tankage (3190 lb (1447 kg) fuel): 980 nm (1815 km)

Maximum Endurance 
with Standard Tankage (2583 lb (1172 kg) fuel): 7 hr 10 min
with Long Range Tankage (3190 lb (1447 kg) fuel): 9 hr



  • All data is preliminary and subject to change without notice
  • Viking is the owner of the Type Design and Certificates relating
    to de Havilland Aircraft product lines; DHC-1 Chipmunk, DHC-2 Beaver, DHC-2T Turbo Beaver, DHC-3 Otter, DHC-4 Caribou, DHC-5 Buffalo, DHC-6 Twin Otter, DHC-7 Dash 7.
  • Viking is a privately held Canadian Corporation and is not in any way, shape or form affiliated with Bombardier Aerospace or any of its subsidiaries