Technical Description

Twin Otter Technical Specifications

Maximum Take-off Weight:12,500 lb (5,670kg)
Maximum Landing Weight:12,300 lb (5,579 kg)
Number Of Crew:1 or 2
Number Of Passengers:19
Fuel Capacities:378 US Gallons (total)
Fuel Capacities:Optional Long Range – 89 US Gallons

Airframe Configuration

  • All metal
  • Non-pressurized
  • High-wing monoplane construction
  • Fixed tricycle (steerable nose) landing gear
  • Wing Span19.8 m65 ft
    Length15.77m51 ft 9 in
    Prop Clearance1.52m5 ft 0 in
    Tail Height5.94 m19 ft 6 in
  • Cabin Length5.61 m18 ft 5 in
    Cabin Height1.50 m4 ft 11 in
    Cabin Volume (usable)10.87cu m384 cu ft
    Main Cabin Entry1.27x1.42 m50x56 in
    Cabin Width1.75 m5ft 9in

Illustration of 19-seat Twin Otter interiorCabin Dimensions

Performance Summary

Maximum Cruise Speed

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
Maximum Operating Altitude25,000 ft
(7,620 m)

Payload Range (at maximum cruise speed)

Payload for 100 nautical mile
(185km) range:
4,061 lb
(1,842 kg)
Payload for 400 nautical mile
(741 km) range:
3,031 lb
(1,375 kg)

Maximum Range - zero payload

with Standard Tankage:
(2,583 lb (1,172 kg) fuel)
775 nm
(1,435 km)
with Long Range Tankage:
(3,190 lb (1,447 kg) fuel)
980 nm
(1,815 km)

Maximum Endurance

 
with Standard Tankage:
(2,583 lb (1,172 kg) fuel)
7 hr 10 min
with Long Range Tankage:
(3,190 lb (1,447 kg) fuel)
9 hr

 

Standard Twin Otter Specifications

The Twin Otter comes well equipped as standard.

The standard layout is a 19 seat configuration.

Seating Options

  • Standard Specs - Viking
  • Standard Specs - Viking
  • Standard Specs - Viking
  • Standard Specs - Viking
  • Standard Specs - Viking
  • Standard Specs - Viking
  • Standard Specs - Viking

Standard Twin Otter Equipment Specifications

Engines

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

Propellers

Two, Hartzell, HC-B3TN-3DY, three bladed reversible pitch, constant speed, fully feathering propellers.

Lights

The aircraft comes equipped as standard with external and internal LED lighting.

Viking Standard LED Lighting

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Flight Deck

Standard avionics is the Honeywell Apex Suite which also controls the following Honeywell Equipment

Viking Avionics - Honeywell Apex Suite

  • Air Data Attitude Heading Reference System (ADAHRS)
  • Multi-Mode Digital Radios (MMDR)
  • Weather Radar System (WX)
  • Radar Altimeter System (RA)
  • Global Positioning System (Dual GPS)
  • Class A Terrain Awareness and Warning System (TAWS)
  • Dual Mode S Transponders
  • Traffic Collision Avoidance System (TCAS I)
  • Distance Measuring Equipment (DME)

Additional flight deck systems

  • Standby Instrument System (ESIS)
  • Magnetic Standby Compass
  • Emergency Locator Transmitter (ELT)
  • Cockpit Voice Recorder (CVR)
  • Flight Data Recorder (FDR)

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