• Review: Twin Otter X Extended

    Twin Otter X Extended

    Publisher: Aerosoft

    Review Author:
    Bill Stack

    Suggested Price:

    Buy Here
    DHC-6 Twin Otter by Aerosoft

    Image From Aerosoft

    De Havilland's DHC-6 Twin Otter is a high-wing, twin turboprop aircraft with short take-off and landing (STOL) capabilities. Developed by de Havilland Canada in the 1960s, it is considered among Canada's better aircraft because of its versatility and durability. The 300 model depicted by Aerosoft is powered by two 620 shaft-horsepower (462 kW) Pratt & Whitney Canada PT6A-27 turboprop engines. It was produced between 1969 and 1988 during which 614 were built. Twin Otter 400 series are now built by Viking Air of Vancouver, British Columbia, Canada. They are available with wheels, floats, or skis.

    Twin Otters in their numerous variations are or have been flown by more civilian and government operators than most other aircraft. The list extends over several pages with countries around the globe. It has been used by commuter airlines, charter airlines, sightseeing airlines, police forces, and military forces. Current operators include Air Labrador, Air Panama, Grand Canyon Airlines, Royal Canadian Mounted Police, the Peruvian Navy, and the U.S. National Oceanic and Atmospheric Administration.

    With so many operators in so many countries over so many years, this aircraft has accumulated a long list of accidents and incidents. Some unusual crashes include a Nepal Airlines Twin Otter that veered off a runway and slide down a mountain side into a river in May 2013 and a Kenn Borek Air Twin Otter that disappeared over the Queen Alexandria mountains in Antarctica in January 2013 with wreckage found two days later.

    The DHC-6 Twin Otter 300 is similar in many respects to the Beechcraft Super King Air in Microsoft Flight Simulator®. Both are twin turboprops. The Super King Air is slightly smaller than the Twin Otter, but it weighs more and is much faster. It also appears that the Twin Otter's range was sacrificed for passenger capacity because it carries twice as many passengers as the Super King Air while having about half the range.

    The DHC-6 Twin Otter 300 specifications below are taken from Airliners.Net because I found none in Aerosoft's documents.

    Specification DHC-6 Twin Otter 300 Beechcraft Super King Air
    Occupants 22 11
    Empty Weight 7,415 lbs
    3,363 kg
    9,090 lbs
    4,123 kg
    Gross Weight 12,500 lbs
    5,670 kg
    15,000 lbs
    6,818 kg
    Useful Load 5,085 lbs
    2,307 kg
    5,910 lbs
    2,681 kg
    Fuel Capacity 121 gal 1
    458 L
    539 gal
    2,040 L
    Max Cruising Speed 182 kts
    338 kph
    363 mph
    315 kts
    583 kph
    Ceiling 25,000 ft
    7,625 m
    35,000 ft
    10,668 m
    Range 700 nm
    1,297 km
    1,765 nm
    3,269 km
    Length 52 ft
    16 m
    48 ft
    15 m
    Wingspan 65 ft
    20 m
    58 ft
    18 m
    Power 2 @ 620 shp 2 @ 1,050 shp
    Primary sources: Airliners.Net for Twin Otter, FSX for Super King Air.
    Notes: 1) Aerosoft Fuel/Payload menu; other sources say 375 gallons.

    Aerosoft's DHC-6 Twin Otter 300

    This Twin Otter package contains three variations, each with a different livery: a cargo craft with three-bladed propellers, a cargo craft with four-bladed propellers, and a passenger craft with three-bladed propellers.

    Aerosoft says its de Havilland DHC-6-300 Twin Otter features the best in modeling "with 2k textures." It also has the best implementation of turbine engines to date, Aerosoft says, with correct indication for torque, propeller revolutions, and internal temperatures. Flight models are as accurate as possible and tested by several Twin Otter pilots. Where FSX default systems are not good enough, Aerosoft has replaced them with its own modules.

    To explain why it calls this product "Extended," Aerosoft said: "This is the third time we are modeling this aircraft for Flight Simulator, but this is the first time we decided to make it a true high end project."

    "Flying the Twin Otter is remarkably easy," Aerosoft's manual says. "The aircraft is stable, reliable and even close to the ragged edge of the flight envelope will be predictable."

    Although the headline in on the Pilot Shop's product description says this product is for FSX, the textual description says it is also for Prepar3D.

    1. MikeSim68's Avatar
      MikeSim68 -
      Interesting review, I have this aircraft and generally think you have accurately represented it. It is clearly one of the superior FSX addons. However, not sure what your point is in saying that the Twin Otter and the FSX default King Air are similar. Your comparison of the two demonstrated how different they in fact are. Not to mention other differences: one with fixed gear, the other without, one STOL, the other not. They are clearly designed for different types of flying.
    1. WyattB1's Avatar
      WyattB1 -
      Yeah, I agree its a very odd comparison. On the other hand, what is there to compare a Twin Otter to? It's a beast in a category all it's own.
    1. mslim's Avatar
      mslim -
      I have great esteem for Mr. Stack's reviews and his "quirk" as referenced below confused me too at first.

      I had trouble using the autopilot, however. The aircraft would not turn left or right while the autopilot was engaged and the heading function was not engaged. This quirk occurred every time I tested the aircraft.

      As my IP said... RTFM! Vol.2 Systems pdf pg. 14-15 It's too long to quote in its entirety but was summarized well on the Aerosoft forum as:

      With the autopilot turned on, but no vertical (ALT, IAS, APPR) or lateral (HDG, NAV, APPR, BC) selected, the autopilot will be in manual mode.

      In manual mode the autpilot will try to maintain the attitude (Pitch, Roll) thatwas present when the Autopilot was turned on or the vertical/horizontal modes turned off.

      With manual mode active You can set the desired pitch and roll with the switch/rockerswitch forun on the center part of the Yoke beside the Yaw damper switch.

      Left/Right mouse clicks will change amount of roll left/right. Mousewheel Up/Down will change the pitch up/down.

      So apparently it is accurately modeled as a very rudimentary Collins AP-106.
    1. calopera's Avatar
      calopera -
      I think the sounds are not realistics...
    1. TrainNutter's Avatar
      TrainNutter -
      Quote Originally Posted by WyattB1 View Post
      Yeah, I agree its a very odd comparison. On the other hand, what is there to compare a Twin Otter to? It's a beast in a category all it's own.
      It can be compared to a Dornier 228
  • Recent Forum Activity


    Keeping Passenger/cargo weights

    Thread Starter: pck42

    Grand Caravan needs to load passenger/cargo weight for each flight. Is there a cfg file which would permently load the weights. pck42

    Last Post By: lnuss Today, 05:06 PM Go to last post

    Aig and fsltl live traffic confusion

    Thread Starter: Miahflyer

    I have been using the AIG live traffic for some time and recently installed FSLTL Live traffic for MSFS2020 from FlyByWire. For both MODs, In the...

    Last Post By: n697dt Today, 03:25 PM Go to last post
    Rusty Gunz

    MSFS can't open after Windows 11 upgrade

    Thread Starter: Rusty Gunz

    Just upgraded to Windows 11. When I attempt to run MSFS I get the message "Microsoft Flight Simulator can’t open because it is offline. The storage...

    Last Post By: davidc2 Today, 02:57 PM Go to last post

    Why is AI so unreliable in MSFS?

    Thread Starter: guzler

    I'm asking this as a genuine technical question, not a moan (well, suppose there is a moan too!) In FS9 and FSX, AI traffic was fairly well...

    Last Post By: guzler Today, 12:19 PM Go to last post