'Version 3.9.3
April 18th, 2026

- GSX Pro NEW: Automatic hotfix updates. Between full releases, fixes can now be delivered in the background: the auto-restarter downloads them as they become available, the MSFS toolbar panel shows a banner when one is ready, and a new menu entry applies the hotfix and restarts the GSX engine. Users can also decline and keep running the previous version until the next full release.

- GSX (all versions) NEW: Towing can now be re-planned from the pause menu. While towing is paused you can choose "Customize route on Map" to open the airport map with a fresh route recomputed from the tug's current position, then edit it as usual (prefer / block taxi segments) and resume with the new route. You can also click a different parking on the map to change the destination entirely — the tug smoothly picks up the new plan where it stands.

- GSX (all versions) NEW: All taxiing ground vehicles (pushback, tow, fuel truck, de-ice, catering, baggage loader, GPU, passenger bus, water, stairs) now follow more natural, realistic paths on approach and departure — smoother curves and fewer awkward zig-zags.

- GSX (all versions) NEW: The 2D pushback quick-edit map auto-wizard is now taxiway-aware. Automatic waypoints follow the airport taxi graph instead of drawing a blind curve from start to end, so the generated pushback path stays on actual pavement even at complex gates.

- GSX (all versions) Change: The Push-in-to-Park dropdown (Nose-In / Tail-In selection) is now visible in all production builds. It was previously only shown with the debug flag enabled.

- GSX (all versions) Change: Aborting a towing operation now smoothly decelerates the tug for ~2 seconds before stopping, preventing the aircraft inertia slide that could previously occur on an instant abort.

- GSX (all versions) Change: Airport map drawing performance improved via Direct2D renderer, batched line drawing and cached text extents for a smoother experience with dense airport graphs.

- GSX (all versions) Change: Airport map zoom-to-fit now includes the user aircraft position when framing the route, keeping the plane visible alongside the planned taxi path.

- GSX (all versions) Change: Route editor on the map now uses smart single-click toggling on taxi segments: clicking an off-route taxiway marks it preferred, clicking a currently-routed taxiway marks it blocked, clicking again clears the mark. Blocked segments are drawn with a red overlay; preferred segments with a highlighted color.

- GSX (all versions) Change: When opening the route editor while parked at a gate, the customizable route now starts at the parking itself instead of overshooting into the adjacent taxiway. Previously the rendered path appeared to backtrack along the taxiway before proceeding to the destination.

- GSX (all versions) Change: Heading-aware forward node selection for vehicle leave routes. After a service completes, vehicles pick a taxi graph node ahead of their current position and heading instead of the geometrically-nearest one — eliminates the case where a vehicle finished its back-off and then pivoted 180° to enter the taxi network, sometimes clipping into the aircraft.

- GSX (all versions) Change: De-ice right-side truck now waits 10–15 seconds (was 6–10) before backing off and leaving at regular gates, so the two trucks don't converge onto the same taxi segment simultaneously on departure.

- GSX Pro Change: Auto-restarter now recovers from a hung Couatl engine automatically, instead of waiting for it to crash.

- GSX (all versions) Fix: Mototok towbarless pushback was not being detected when the tug vehicle was materialized dynamically — the pushback would fall back to a towbar configuration. The towbarless mode is now detected right after tug spawn and the push operation starts in the correct configuration.

- GSX (all versions) Fix: Pathfinding and sparse-waypoint route building now yield periodically to the scheduler while computing long routes, so vehicle animations already in progress no longer stutter when another service starts a new route calculation.

- GSX (all versions) Fix: De-ice trucks would back off the aircraft and then do a visible 180° reversal before taxiing away, sometimes clipping the aircraft. The leave route now anchors on the truck's own post-backoff pose and joins the taxi network at a forward node, giving a smooth, realistic departure.

- GSX (all versions) Fix: Some VDGS models could be invisible on the first activation of the parking editor, only showing a ghost cursor; cycling the object with PgUp/PgDn made the model appear.

- GSX (all versions) Fix: When requesting an additional service at a gate that was already prepared, traffic cones and the fuel manhole could be removed as the gate was re-prepared. A missing manhole at underground-refueling gates caused the fuel truck to arrive without the operator crew animation connecting to the pit. Cones and manhole are now preserved when the parking hasn't changed.

- GSX (all versions) Fix: Push-in tow vehicle was not dematerialized when the service was destroyed or cancelled before completion, leaving a visible orphan tug at the gate.

- GSX (all versions) Fix: Parking editor could crash when opening a parking whose VDGS model is missing from the installed assets. Now logs a warning identifying the missing model title and continues.

- GSX (all versions) Fix: Couatl engine restart from the tray-bar menu could hang indefinitely when the airport map or any other modal dialog was open. The restart path now closes all top-level dialogs before posting the quit message, so the engine cleans up and re-launches as expected.

- GSX Pro Fix: Stale menu entries could remain visible in the MSFS toolbar after warping to another parking. The menu is now cleared as soon as the warp starts.

- GSX P3D Fix: Crash (AttributeError on '_airportHandlerActive') when engaging an airport that had never previously initialized the handler state.'

Source

Edited April 18Apr 18 by MrLamb

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

46 minutes ago, Tuskin38 said:

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

I appreciate the new threads.  The single threads can get very long and you miss the update. 

1 hour ago, Tuskin38 said:

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

Could say the same about PMDG or ini but you say nothing about that. Whole point of a forum is for seeing things at least its not buried in between posts...

38 minutes ago, knich said:

I appreciate the new threads.  The single threads can get very long and you miss the update. 

I agree. I hate people posting on old threads that's dated 6 months or longer. When it's just as easy to start a fresh announcemnt.

1 hour ago, Tuskin38 said:

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

I agree, I routinely check FSDT Installer at least once a week, could care less if I miss an update. They sometimes seem push at least 2 a week anyway. I wouldn't notice any functionality changes in GSX. It just automatically runs and does it's thing.

Disagree. I like a new thread for every update. 

10 hours ago, jsbdave said:

Disagree. I like a new thread for every update. 

Me too, it is OK this way !

cheers 😉

 

15 hours ago, Tuskin38 said:

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

Considereing that GSX calls attention to each update itself when you open up the GSX Menu, I'd go even one step further and say we don't need these threads at all.

You simply can't miss them and don't need an AVSIM thread to point your attention to their existance.

Edited April 19Apr 19 by Farlis

The posting of a topic advising a new version of Couatl is available has only started with v3.9. Given the many years this product has been available it seems unnecessary for each update to warrant a new post.

Those of you interested can find the news on the link below. Whilst we won't lock any future topics I would discourage posting such news in a separate topic. Just create a shortcut to this page.

https://www.fsdreamteam.com/couatl_liveupdate_notes.html

I’d like to thank Mr Lamb for posting these previously 👍

21 hours ago, Tuskin38 said:

Do we really need a new thread for every update? Just create one thread and post the updates in there when they arrive 😕

I agree. Just one thread will do. This is just spamming. 

I don't know about you folks but I have well over a hundred add ons and I rely on these threads and developer emails (if I get them) for updates.  You DO NOT get notice of every update.  What it the point of this Community if you are not sharing information?  I can't search every add on each week for an update.  I find it hilarious that those who don't like updates because I guess they are not needed come in these forums to post that they are not needed.  

Not picking a fight....I enjoy you all. 🙂

18 minutes ago, knich said:

I don't know about you folks but I have well over a hundred add ons and I rely on these threads and developer emails (if I get them) for updates.  You DO NOT get notice of every update.  What it the point of this Community if you are not sharing information?  I can't search every add on each week for an update.  I find it hilarious that those who don't like updates because I guess they are not needed come in these forums to post that they are not needed.  

Not picking a fight....I enjoy you all. 🙂

One thread works fine for MSFS Auto FPS App. Not sure why GSX is special. 

1 hour ago, RobJC said:

One thread works fine for MSFS Auto FPS App. Not sure why GSX is special. 

Not sure why other addons don’t get the same treatment. If people don’t like reading a new update thread scroll by. Those complaining this is a problem then when it comes to PMDG, Fenix, ini etc it should be the same way but no they’re don’t complain.

The irony the one who complained does exactly the same the op does

Edited April 19Apr 19 by carlanthony24