It’s been an eventful week for widebody Airbus fans. With iniBuilds’ A340 finally landing in Microsoft Flight Simulator, it’s easy to forget that another A340 project is in development, one that brings together two well-known names in the simulation world: Aerosoft and ToLiss.
In a new developer conversation released by Aerosoft, community manager Rafi sat down with ToLiss founder Torsten Liesk to discuss the progress on the upcoming A340-600 Pro, offering us the most detailed look yet at the aircraft’s systems, flight model, and design philosophy. It’s the start of a new developer series focused on this project, leading up to a release that now seems just around the corner.
A collaboration that plays to each team’s strengths
As we’ve learned before, the A340-600 Pro is a joint effort between Aerosoft and ToLiss, with each focusing on what they’re best known for. ToLiss is handling all the systems, avionics, custom flight and engine models, and flight logic. Aerosoft is responsible for the 3D model, visuals, and publishing.
Torsten described the setup as “the best of both worlds,” combining Aerosoft’s visual expertise with ToLiss’ reputation for complex Airbus systems.
A deep simulation built from the inside out
Drawing on his background as a systems engineer, Torsten explained that ToLiss models aircraft systems at a component level, including pumps, valves, actuators, and reservoirs, so that every action and failure produces authentic downstream effects.
This approach forms the foundation for around 250 user-triggerable failures, covering major systems such as hydraulics, electrics, pneumatics, flight controls, and engines. Instead of scripted cause-and-effect logic, failures propagate naturally through the simulated systems, creating what Torsten calls “a living aircraft behind the screens.”
The A340-600 Pro’s FMS will feature the same depth ToLiss users know from X-Plane, such as secondary flight plans, route offsets and temporary edits, constraint-aware VNAV and descent profiles, managed and selected modes, and “jump to next waypoint” to advance long flights realistically.
For long-haul simmers, there’s also a situation save/load system with automatic saves at user-defined intervals (from every minute to every five minutes) allowing flights to be recovered after a crash or paused mid-route.
New flight, ground, and engine models
During the interview, Torsten explained that rather than porting over their X-Plane code, ToLiss spent the past two years developing new models for Microsoft Flight Simulator. Torsten says the team built custom flight, ground, and engine models from scratch to overcome platform limitations — such as MSFS’s single-aileron-per-wing setup — and ensure realistic behavior in all regimes.
The new ground model, developed in collaboration with McGill University, focuses on realistic tire friction, braking, and ground-handling dynamics. The flight model has been validated by real-world A340-600 pilots, with ToLiss reporting that its tuning closely matches the X-Plane version’s behavior.
Third-party integration
The team confirmed several planned integrations:
- Hoppie CPDLC (already functional, pending keyboard fixes)
- SimBrief flight-plan import
- Navigraph integration, currently being evaluated for MSFS due to platform differences from X-Plane
A long-haul Airbus built for MSFS
Torsten closed the conversation by saying the A340-600 Pro will bring “a new level of system accuracy for widebody Airbus aircraft in MSFS,” aiming to match or exceed the fidelity of ToLiss’ narrowbody lineup.
No release date or pricing has been shared yet (but will soon!), and the project remains focused on the A340-600 variant for now. Still, the depth of simulation described, and the fact that the work has been ongoing for two years, is a clear sign that Aerosoft and ToLiss are preparing something special for long-haul simmers.
