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If you happen to be within sight of Male International Airport, take note of what aircraft type you see the most often. Chances are that you would be looking at a de Havilland Twin Otter seaplane!

Flown around the world in locations ranging from tropical jungles to arid deserts, over mountains into the freezing Arctic, the Twin Otter is an example of rugged reliability and safety. 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. 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.

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.

Still rated Canada’s most successful 19-seat commercial aircraft program with more than 800 aircraft built to date, the Twin Otter is popular all over the world for its rugged construction and useful STOL performance. The versatility of this aircraft makes it perform very well on wheels, skis or on floats, the latter making it the ideal aircraft of choice for the 1100-island Maldivian archipelago.



GENERAL INFORMATION:

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

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

DIMENSIONS:
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 DIMENSIONS:
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)

ENGINES:
Two, Pratt & Whitney Aircraft of Canada Limited, PT6A-27
or optional PT6A-34, single stage, free-turbine engines.

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

STANDARD AIRCRAFT BASIC WEIGHT:
6881 lb (3121 kg)

PERFORMANCE SUMMARY:
STOL Takeoff and Landing Distance:
Takeoff 1200 ft (366m)
Landing 1100 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 100 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