Description
Twotter Revived v2024.3.183 (beta) - The "After Dark" Release
.183 is a maintenance release, no significant new features. Mostly bug fixes, polish, and some corrected system behavior based on infos from CCM’s Twotter driver friends. Also all kinds of improvements and fixes related to lighting, including much improved taxi and landing lights courtesy of hobanagerik. <3
By now, this is probably what the modding community would call a "Total Overhaul". Almost every system in the aircraft has changed, many have been replaced and redesigned, and even some core sim systems had to go in favor of custom implementations.
This is a test version, please flag any issues you notice. I try to make sure the releases published on flightsim.to don't contain any blockers or stoppers that would keep you from flying, but bugs cannot be avoided and if you find one, please return it to its rightful owner.
If you run into issues or have questions, contact me here or on Discord: aurel#3010 (if you're active on Discord, we most likely share a few flightsim servers). If you know about the aircraft IRL or aircraft development in MSFS, I'm especially grateful for your input and suggestions.
The Turbine Duke sound mod [NEW]
This version includes an optional, highly experimental sound mod that re-uses the Black Square Turbine Duke soundbank with kind permission by Black Square and Boris Audio Works.
This sound mod only works for owners of the Black Square Turbine Duke. To enable the sound mod, copy it to your Community/ folder and launch install.bat in the charliebravo-soundmod-twin-otter-turbineduke folder.
Because of the experimental nature of the mod, it is highly recommended you remove or disable it when flying the Turbine Duke. If you experience any sound issues in the Turbine Duke while this mod is installed (and they go away if you disable the mod), please contact me. We don't want to bother the nice people of Just Flight with problems created by the Twotter.
Known issues in this release: The Autopilot can misbehave in certain situations. If it stops showing a lateral mode (empty space instead of ROL, HDG, NAV, or APR), please re-activate the mode manually. Watch this space for a fix, hopefully in just a few days.
Installation
#NOTE: Because of previous drama around Aerosoft mods, this mod is distributed as an archive containing xdelta files and an install script. You will need an original, unmodded installation of the Twin Otter 1.1.1 (installed using Aerosoft One, the legacy Aerosoft installer, or by other means) so the installation process can READ the original files and WRITE the changed files to the mod folder. Your original files will not be touched.
Until the install script has been executed, the mod will be inactive.
Before you report an installation error, please consider reinstalling a fresh copy of the Aerosoft Twin Otter in the last release version (1.1.1) and trying with that folder. If the errors persist, please contact me so we can figure out why they happen. The installer should now work with all popular versions of 1.1.1.
The contents of the zip file:
- charliebravo-aircraftmod-twin-otter, this is all you need, you must unpack this to use the mod, the rest is optional
- charliebravo-soundmod-twin-otter-turbineduke, this is an optional sound mod, must own the Black Square Turbine Duke to use it
- z_aerosoft-twin-otter_propblur_mod, this is an optional mod that makes props blurry when you're close
- z_aerosoft-twin-otter_flat_cameras, this is an optional mod that levels out the cockpit camera views (the close pilot view and the three captain's instrument views), instead of having them tilted down at the panel
- historic_ndb_userpoints.csv, this file can be imported in Little Navmap to show historic (decommissioned) NDB beacons
You will still need to have the base model (ie. the aerosoft-aircraft-twin-otter folder) in your Community/ folder for the mod to work.
Step by step:
- UNPACK directly into community or wherever you keep your Community add-ons
- OPEN the folder charliebravo-aircraftmod-twin-otter
- optionally, if you're paranoid or they are actually after you: EXAMINE install.bat and install.ps1, overwrite the xdelta executable with a version you trust
- DOUBLE-CLICK install.bat or RUN install.ps1 in Powershell (install.bat is just a wrapper that executes the Powershell script)
- follow the prompts and SELECT an unmodified aerosoft-aircraft-twin-otter folder
In a perfect world, the changes are applied and you end up with a working mod and the lawyers have no leverage against me. I apologize for this, I can assure you that it has been even less fun to set this up. I contacted Aerosoft and Microsoft to get their blessing, but, so far, I didn't receive a response. It appears our Twotter is in some legal limbo: Aerosoft sold the rights to Microsoft, and now neither party appears to have any interest in the legacy product. xdelta helps me to stay on the safe side.
If you unpacked the soundmod:
- OPEN the folder charliebravo-soundmod-twin-otter
- DOUBLE-CLICK install.bat or RUN install.ps1 in Powershell
- follow the prompts and SELECT an your bksq-aircraft-turbineduke folder
Liveries
Legacy liveries for the Aerosoft model might work, if the loading order is carefully managed. You might have to rename folders to ensure the mod is loaded after base aircraft and liveries.
Resources:
- Read about what Twotter Revived can do for you in the Twotter Revived manual.
- Discuss the mod on the official MSFS forum.
- Find preview versions, release candidates and the mod's WASM source on Google Drive.
Twotter Revived is a community project. It is not endorsed or certified by De Havilland Aircraft of Canada. It is not approved by anyone in any way, shape, or form for training or any other real-world application. Any real-world references are provided for entertainment and educational simulation use only and may be incomplete, outdated, configuration-specific, or inaccurate.
Frequently Asked Questions
Comments(143)
Log in to join the discussion
Log Inabout 12 hours ago
7 days ago
9 days ago
12 days ago
8 days ago
8 days ago
14 days ago
14 days ago
From a practical perspective, a working water rudder that you can control with the same controls as the rudder and nose-wheel steering would probably help?
14 days ago
14 days ago
14 days ago
14 days ago
14 days ago
13 days ago
17 days ago
Is there anyway you could release a version with just the systems changes you have made but with the default flight model?
For me it is way too draggy with the flight model changes and it is very hard to land as the aircraft just sinks.
16 days ago
- Recommended flap setting for landing is 20° (see POH). 30 or 37.5° are reserved for short field landings and need power all the way to the ground.
- The POH says to keep power up until over the threshold (= 50 ft AGL). We don't hit that mark yet. If you go idle as you go over the threshold, you can run out of lift and pitch authority during the flare. Recommended workaround is to keep some power until just before (or even after) touchdown.
- CCM is working to address the complaints. His latest flight model will be part of the next release.
I will have a look at other options. I did ship the legacy flight model until v2024.3.68, which is still available for download, exactly for this reason.
Including the legacy tuning with a newer version is no longer trivial. I'm gonna look into it. No promises.
I'd rather stick with CCM's flight model, because in all other regimes, it's IMHO clearly superior and more fun to fly.
15 days ago
21 days ago
EDIT: Upon some reading it appears it's not possible to purchase anymore, this is quite sad, I will have to miss out and hope that one day this gets updated to use the MSFS 24 version. Absolutely love your work here regardless!
21 days ago
Don't give up hope, though, maybe some day whoever owns the base aircraft now will find a way to make it available to the Community. We just need to build the best mod that's ever been so they can't ignore it. :D
C'mon, you gotta dream. Until then, moral flexibility appears to be the only option.
Twotter Revived
Twotter Revived is a free, community-built overhaul of the Aerosoft Twin Otter (MSFS 2020) for MSFS 2024. The goal is a faithful recreation of the aircraft, replacing stock sim systems with custom code where the sim falls short. Engines, electrics, radio navigation, and countless other systems are simulated in depth and interact with each other. The flight model has been overhauled by aerodynamicist extraordinaire CanadianCaptainMoustache. Cockpit state persists between flights, an EFB app handles loading, settings, and maintenance, and components can wear out and fail.
User Reviews
19 reviews
More Information
Version History
# Patch notes v2024.3.174 -> v2024.3.183 Mostly bug fixes, polish, and some corrected system behavior based on infos from CCM's Twotter driver friends. ## Avionics - EFB: Added Config tab option: "Use FDR switch as Avionics switch" repurposes the unused Flight Data Recorder switch as avionics master for GNS 530/430, KAP 140, transponder, ADF, audio panel (suggested by CCM). - Fixed the GNS 530 restoring a page the pilot never actually settled on. - Fixed the GNS 430's CDI button switching the captain's HSI. - Fixed the KAP 140, transponder and KR 87 buttons not being backlit consistently. - Fixed restored ADF standby frequency occasionally being clobbered by the sim defaults. - Removed NDBs with likely spurious frequencies (below 160 kHz) and no gameplay relevance from the historical NDB database. ## Engines - Closed another physics gap in the engine model for more plausible hot starts. - Wired up exhaust smoke and flame effects (placeholder art). - Overhauled the GCU based on real-world feedback: the generator connects at the starter-generator handover (about 46 % Ng) and essentially always comes on line, with a very slim chance of tripping that rises with engine age. A tripped generator still needs a RESET. - Fixed a generator with collapsing output staying connected to the bus and dragging bus voltage down, which could reboot the avionics. ## Fuel system - Electric fuel pumps now take a moment to build pressure. - Feedback: Removed the mandatory boost pump requirement below 8000 ft density altitude. ## Cabin climate - Fixed the cabin temperature control switches restoring in wrong positions. - Fixed the spring-back behaviour of the Manual COOL/WARM switch. - Fixed cabin temperature sometimes initialising at crazy values. - The cabin hot air valve no longer moves with a dead DC bus. ## Cockpit & systems - Fixed the cabin doors and baggage hatches not responding to either the EFB Cabin Door button or the cockpit handles. - Fixed rudder pedal axis jitter driving the nose wheel steering actuator, triggering a ridiculous amount of hydraulic pump runs. - Fixed the missing cockpit flashlight at night. - Landing and taxi lights: cones tuned by hobanagerik <3, based on reference images, with intensity brought up to MSFS 2024 values. ## Sound - Replaced the interior flap sound with an unobtrusive actuator loop by FlyByWire that tracks actual flap travel. The exterior view keeps the original one-shot per detent until I find a sound that fits. - Feedback: The GNS 530/430 COM volume knobs and the KR 87 volume knob only click at the "Off" detent. ## Flight states & ground handling - Fixed incorrect default lighting, avionics and system states across the spawn scenarios. - Mitigated erratic ground steering and throttle behaviour during taxi cinematics. ## Persistence - Fixed persisted state occasionally failing to update one last time when returning to the main menu. ## Checklists - Feedback: The Shutdown checklist now keeps the fuel boost pumps on until both engines have decelerated below 10 % Ng. - Checklists are aware of the avionics master switch. - Fixed the autofeather items flipping the underlying state without moving the cockpit switch. - Approach flap items accept at or beyond the called setting. - The Weight and Balance item now autocompletes if gross weight and CG are acceptable, leaving the Passenger Briefing as last remaining item in the pre-take-off checklists that (intentionally) doesn't autocomplete. - Fixed some typos and inconsistencies. ## EFB app - Fixed the Payload tab showing the wrong MTOW for -100 variants. It now reads the aircraft's own max gross weight. - Updated the "Generators can trip" description to match the reworked generator behaviour. - Fixed some minor layout issues. I know, many EFB tabs could use a beauty pass. ## Optional extras - Included hobanagerik's flat camera positions as an optional mod (`z_aerosoft-twin-otter_flat_cameras`): it levels out the close pilot view and the three captain's instrument views instead of leaving them tilted down at the panel. Please give feedback.
Related
Verkehrslandeplatz Cottbus/Neuhausen (EDAP)
Authentic representation of the Cottbus/Neuhausen airfield (ICAO: EDAP) as part of the "Lausitz Scenery" project. Custom buildings, high resolution DEM, static aircraft, and more included. Unfinished project with some known issues; provided "as is". Visit the detailed release notes for more information.
by aurel42
Lausitz Landmarks
This scenery project adds landmarks to the Lausitz area and Cottbus city in Microsoft Flight Simulator as part of the "Lausitz Scenery" project. Please note that the project is unfinished, with known modeling imperfections and potential performance issues. Featured landmarks include power station Jänschwalde and the Cottbus Altmarkt.
by aurel42
Verkehrslandeplatz Cottbus-Drewitz (EDCD, anno 2012)
Experience an authentic representation of Cottbus-Drewitz airfield around 2012 with this scenery project, part of the "Lausitz Scenery" project. Custom models for tower, terminal building, and aircraft shelters are included, along with high-resolution DEM and custom aerial data. Please note this project is unfinished and may have performance issues due to incomplete modeling.
by aurel42
ComancheProxy (A2A with Brunner CLS-E yokes)
ComancheProxy is a utility designed to bridge A2A Accu-Sim aircraft, such as the Comanche, with Brunner CLS-E force-feedback yokes via CLS2Sim by providing more accurate flight data than standard MSFS. It enables enhanced force-feedback effects by relaying expected control surface information. The tool also allows users to fly unsupported or encrypted aircraft in FSEconomy by modifying aircraft identification data. Configuration options support both yoke integration and FSEconomy profile compatibility.
by aurel42
about 17 hours ago
The only issue I have, and I'm not sure if it's something on my end or not, but when I'm in the Twotter with floats, I have a constant noise in the cockpit (that stops if I'm on ground, on in the air, I tried by slewing myself, the sound just stops). When eveything is cold and dark, and the plane not moving, it makes a noise like if I was moving in the water (I guess it's the sound of water friction, I can't really tell). Any idea what it may be ?