FlightSim Studio recently shared an update on their E-Jet’s new custom FMS and autopilot for Microsoft Flight Simulator 2020 and 2024.
The team has been deep in testing for nearly three months now and has posted some project statistics to show the scale of the project.
- 88+ testers flying the new version
- Around 2,000 flight sessions logged (roughly 22 flights per day)
- 64 unique issue reports raised
- 350 code changes deployed (averaging four updates per day).
LNAV/VNAV
FlightSim Studio said that the E-Jets are now fully flyable in normal operation, with all the major FMS pages in place, LNAV is working as it should, even in tricky crosswind conditions, and VNAV is implemented. The team has now fixed issues with SIDs and STARs, and improved support for non-standard parts of procedures such as Course to Altitude waypoints. The Direct-To function has been reported to be working well, although a few small quirks remain. One of the biggest hurdles the team encountered was integrating Navigation Data from Navigraph, causing regression bugs and forcing a rebuild of the ILS logic from scratch.
What’s Missing?
FlightSim Studio explained that before the update is released, a few things are still missing. The main unfinished area is the vertical autopilot modes, while the default MSFS autopilot managed well so far, the new custom FMS (CFMS) required a rebuild of autopilot logic, and although LNAV is done, the VNAV modes aren’t fully stable and need refining.
They also mentioned that if the new autopilot is stable by December 2025, they plan to release an experimental version to everyone, however, some features will have limitations such as, certain sound logic not working (like the TO CONFIG check) as they are still porting from JavaScript to WASM, and the EFB’s performance calculator (tied up with the old MCDU system) isn’t available yet.
No release windows are given for V1.0 of the FlightSim Studio E-Jets, but make sure to stay tuned to FSElite for the latest updates.
