Fly Away Simulation

Behind the Scenes of Building a DHC-6 Twin Otter Home Cockpit

Last updated Sun, 08 Jul 2018 17:58:27 GMT
Originally posted on Wed, 30 May 2012 10:18:21 GMT

André Aepfelbach has been a Microsoft Flight Simulator aficionado since 1994. He started out with a keyboard, moved to a joystick, then graduated to yokes and pedals. He had everything he needed to get as close to real flying as possible. 

Partially built home cockpit

And yet, one bright sunny day he was approaching a landing in Tahiti when a series of errors forced him into the water. Later, reflecting on this unfortunate turn of events, he decided he needed more control.

Andre's simulator set-up before he built his cockpit.

Andre's simulator set-up before he built his cockpit.  He states, "The first picture shows how I was flying before and the it clearly shows that a homecockpit was urgently needed".

He decided on his course of action. He was going to build his own home cockpit.

A preliminary investigation revealed that Boeing 737 plans were the most common. But he didn’t want to build that kind of aircraft. In his soul, André was an island hopper. He wanted a “simpit” like the planes he likes to fly in real life. He drew up plans to build a flight simulator cockpit of a deHavilland DHC-6 Twin Otter, one of the most popular Microsoft Flight Simulator aircraft.

The DHC-6 Twin Otter is a Short Takeoff and Landing (STOL) utility plane originally created and developed by Canadian company deHavilland. It is currently being built by Viking Air. Distinguishing characteristics include a fixed tri-point landing carriage, very high rate of climb, and functional, no-frills look. It is a popular aircraft with skydiving companies, military paratroopers, cargo carriers, and regional airlines. It was perfect for André’s home cockpit adventure.

However, good ideas are easier to come up with than carry out. Creating a home cockpit is a serious undertaking that takes a lot of planning. We are going to take a look at how he planned his home cockpit and brought it into being. If you’ve ever considered it yourself, you may get some good ideas.

Planning Is Critical

First André drew up some initial plans. He researched on the internet and talked to people all over the world. His contacts lived everywhere from the US and Canada to far-flung locations like the Maldives and Seychelles. He reviewed and evaluated many different ways of building the cockpit. He created small paper mockups to test various ideas. The control is the most difficult piece to get right. He already had a Siatek Pro Flight Yoke System so he used that to test different build configurations.

He then went to the Mannheim City airport (EDFM) and took measurements of a real Twin Otter to compare them to his plans. Returning home, he finalized the first version of the plans, had an artist render a visual mockup, and sent the plans to a carpenter. The carpenter cut separate pieces from medium-density fibreboard (MDF).

André sanded the edges of each piece so it was nice and smooth. MDF board is great for a simpit project because it is strong and relatively inexpensive. He pre-painted the center console and outer plates. He used 19mm MDF for the piece that became the base plate. The side plates were attached with carriage bolts.

The outer panels were painted and carpeting was cut to match the dimensions of the base plate. Angle brackets were attached to the plates with carriage bolts. The benefit of using carriage bolts for much of the assembly is that the entire cockpit can be easily dissembled if the unit ever has to be moved.

The main panel was then set-up in the shell and bolted in place. At this point a dummy stool stood in for the eventual pilot seats. The dummy stool had the same dimensions of the real seats and was used to make sure that the seating was the correct height to the console. This allowed testing and reconfiguring as the cockpit was built to insure it was all going to plan.

For that same reason, André set up a monitor and a side-mount yoke. This allowed him to take test flights and get the feel of the space. At this point he also created some dummy gauges on photo paper and framed them with rubber rings to increase the realism.

Starting Over: Otter 2

André continued to work on “Twin Otter 1” and liked the result. But he could see that he already wanted to start over and build an even better version. Soon “Twin Otter 2” was being planned and pieced together. He decided he wanted to incorporate bigger and better ideas.

The shell of the Twinotter II cockpit (including the original yoke).

The shell of the Twinotter II cockpit (including the original yoke).

The new simpit’s plans were created 1:1 to help create the most detailed panels possible. The frame was set off the ground to be able to mount the seats and the controller into the base. He used the same angle brackets and carriage bolts as last time to accommodate easy disassembly if needed.

This time he created a main panel that would accommodate twin yokes in the front. There is also a cutout to accommodate a computer keyboard for accessing quick keystroke shortcuts. He also included a GF autopilot module and assembled a toggle panel.  DHC6 covers were attached to the MDF and dropped into the frame. Holes were drilled for the instruments and a panel was created for the middle section.

The side panels were ground down, sanded, and painted. He coated the interior with RAL 7001 and painted the outside with base white followed by the Twin Otter color scheme. The side panels were then attached to the base mount. Carpet was laid and Pro Flight Rudder Pedals would be added shortly after.

For seating, he was able to acquire a pair of used Opel Recaro seats. To mount them he had to create a carbon steel substructure above the floor. He was able to use a larger monitor this time around: a BenQ G2420HDBL 24-inch widescreen LED. Plans called for the same unit to be added to the co-pilot side. Once the BenQ was in place, he added overhead switches for cabin lights.

The middle circuit breaker located in the center console was fitted with fuse holders. The fuse box itself was designed in Corel Draw, printed, and transferred to a plate made of Plexiglas. André used a lathe to tap the fuse holders to get them to fit the plate. It was then covered and machined.


André added subwoofers and bass speakers behind the center console between the foot wells. Later he would add two speakers behind the panel cover on the left and right side. He says you can actually feel the sound as well as hear it because the bass on the MDF bass plate creates vibrations through the entire cockpit. Several buttons and lights on the main panel come from a SYS3 board from Flight Decks Solutions ( The buttons pass their respective commands directly to the computer for processing. 

Over the next few months, he continued to work on the instruments, electronics, lighting systems, panels, and the complex, interrelated systems that go into a quality home cockpit. He loves flying simulation more than ever before--and hasn’t dropped into the water off Tahiti once.


The original plate panel for the middle section which he is building into his cockpit.

The original plate panel for the middle section which he is building into his cockpit.

Clearly, both Twin Otter 1 and Twin Otter 2 were labors of love for André. He told FS Magazin he will continue to refine and improve his design and construction (Feb/March 2012). He advises anyone considering a similar project that it will take longer than expected. He worked on each simpit as time allowed after he met his work and family responsibilities. As a result, at times development was rapid or it might have slowed for weeks at a time. It’s important not to get discouraged and work on it as you can. Most of all, have fun!

André welcomes any input or feedback from readers. You can contact him directly at  He encourages you to keep up with his blog at (German). You can also check out his Facebook page at

Reference Material

Equipment and Parts

For additional reference and background, here is a list of some the equipment and parts André used:

  • 1x BenQ 24 inch G2420HD Widescreen Monitor
  • 2x BenQ G2750 (27 inch) Widescreen Monitor
  • 2x Medion 19 inch MD 32119 TFT Monitor
  • 1x Equip Kabel-VGA Splitter (2-Port)
  • 1x VRinsight – M Panel
  • 1x Go-Flight GF-ICCS Integrated Communications Console System
  • 1x Go-Flight GF-P8 Pushbutton Panel
  • 1x Go-Flight GF-MCP Advanced Autopilot Modul
  • 2x Go-Flight-T8 Toggle Panel
  • 2x Saitek Pro Flight Yoke System
  • 1x Saitek Pro Flight Rudder Pedals
  • 3x Saitek Pro Flight Combat Rudder Pedals
  • 1x Saitek Pro Flight Headset
  • 2x Saitek Pro Flight Throttle Quadrant
  • 2x Saitek Pro Flight Backlit Information Panel
  • 1x SYS3 Board by Flightdecksolutions


Software André uses includes:

Flight Sim Packages:

  • DHC-6 Twin Otter DeHavlliand
  • Anchorage X
  • Antarctica X
  • Balearen X
  • Dutch Harbor X
  • FTX Australia SP4
  • German Airfields 1
  • German Airfields 2
  • Gibraltar X
  • Helgoland X
  • Iceland X
  • Keflavik X
  • Iceland X
  • Keflavik X
  • US Cities- Las Vegas
  • Lukla X- Mount Everest
  • Maldives X
  • Mega Airport Frankfurt
  • Mega Scenery USA Southern California
  • Scenery Madeira
  • Tahiti X
  • Tongass Fjords X
  • Twin Otter X
  • Ultimate Terrain X
  • US Cities X- Cleveland
  • VFR Germany 3– Sud
  • VFR Netherlands

Various Scenery:

  • Antarctica Stations by Dirk Stuck Design
  • Azores #1 by TropicalSim
  • Colombia Virtual Xtreme Edition 2011 by Virtualcol FS Software
  • French Islands PHOTO HD by FranceVFR
  • Gran Canaria International Airport by Sim Giants
  • Key West by LatinVFR
  • Miami International Airport by LatinVFR
  • Maarten Complete by FlyTampa
  • Mannheim X by FlightPort

Additional Add-ons:

  • Captain Sim 757-200 Captain Pro Pack
  • Flight 1 – ATR 72-500
  • Disposition Follow Me
  • Ultimate Traffic 2
  • Accu-Feel

Additional Tools:

  • Teamspeak
  • World of AI
  • AES

Download iconDon't forget... We have a huge selection (over 24,000 files) of free mods and add-ons for FSX, P3D & X-Plane in the file library.  Files include aircraft, scenery, and utilities  All are free-to-download and use - you don't even need to register.  Browse on down to the file library here.

Ian Stephens

About Ian Stephens

Ian Stephens is a flight simulation enthusiast also with a keen interest in aviation and technology.  Ian spends a lot of his time experimenting with various simulator packages but has a love for Microsoft Flight Simulator X because of the huge selection of add-ons available.  However, Ian also has copies of Prepar3D and X-Plane installed. 

Ian has been writing for Fly Away Simulation for over 9 years.  Should you wish, you can contact Ian via email at


Leave a Response
Edward Wed, 30 May 2012 11:14:19 GMT

I have read and admired this piece of work. Bravo Andre. I happen to be a virtual world pilot planning to start building a home cockpit, my choice is a Boeing 737-800.

Bob CrosbyWed, 30 May 2012 17:29:57 GMT

Airline Captain 36 years, with 20,000 hrs. Big stuff 727, 737, Connie, DC-6&7, DC-8 61 & 62, Viscount, DC-3 With Wight engines, Light stuff Champ, Stinson 108,PT-23, BT-13, Bambo Bomber UC-78,Cessna 140, 172,175,182, T-craft on floats, Piper Cub, and Tri Pacer Pacer, Ercoupe. I use Flt Sim 9, I love the first, Just Flight 727, As I flew it for 13 years. The program is the most realistic all around. Please write, would love to exchange ideas + I flew many more planes than listed, Soloed in 1951

ChrisWed, 30 May 2012 22:39:33 GMT

Well done André, you must be either single or be a most understanding lady, if the latter does she have a sister?

Pro MemberfrogalogWed, 30 May 2012 23:29:22 GMT

Good work André. I would love to have motion simulator of a fighter jet. Would you know where i can get one. Cheers, keep up the good work

AndreMon, 04 Jun 2012 22:11:27 GMT

Thanks Ian for this great article.

Pro MemberAvsim1Sat, 21 Mar 2015 09:16:33 GMT

Hi, I have just joined. Being very interested in the home build, how is progress on this device and have you completed it, do you have photos and videos. Thanks

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