Version 3.9.2
April 15th, 2026

- GSX (all versions) NEW: Taxi route customization on the airport map. When selecting FollowMe, Progressive Taxi or Towing, you can now click "Customize route on Map" to open the airport map and visually edit the route by clicking on taxiways to prefer or unprefer them. The route recalculates in real time through preferred taxiways. Taxiway labels are shown on the map at intermediate zoom levels for easier identification.

- GSX (all versions) NEW: Push-in to Park (Tail-in parking). Gates can now be configured for tail-in parking, where a tug pushes the aircraft backward into the gate. Dual-use gates offer a Nose-In / Tail-In choice when selecting a parking position. All ground services work correctly with tail-in parked aircraft, including mirrored vehicle positions and automatic skip of departure pushback.

- GSX (all versions) NEW: Pushback and towing can now be paused and resumed from the menu. The tug decelerates and accelerates progressively, and walkers switch to idle animation during the pause.

- GSX (all versions) NEW: Distance ruler in both 2D and 3D pushback route editors, showing major ticks every 10m and minor ticks every 1m for precise waypoint positioning.

- GSX (all versions) NEW: Menu timeout is now configurable via a slider in the Timings settings tab (20–120 seconds).

- GSX Pro NEW: Auto-restarter integration. If the GSX engine crashes, the MSFS toolbar panel detects it via heartbeat monitoring and shows status messages while the auto-restarter brings it back.

- GSX Pro Change: MSFS toolbar menu now opens faster in normal use. The loading spinner is deferred and only appears if the menu takes longer than expected to load.

- GSX (all versions) NEW: Handler scripts: new onFilterModels callback allows handlers to force-include or force-exclude vehicle models before the selection pipeline, and inject custom parameters into model condition evaluation.

- GSX (all versions) NEW: Handler scripts: new onChoosePushInMode callback allows handlers to force push-in or normal mode on dual-use gates.

- GSX (all versions) NEW: Handler scripts: new doorInTransit property and waitForDoorTransit() method on aircraft exits, for detecting and waiting on door animations in progress.

- GSX Pro NEW: Handler scripts: aviramp property on the handler allows overriding the gate's aviramp setting at the handler level, eliminating timing issues with per-gate writes.

- GSX (all versions) NEW: Handler scripts: per-parking jetwayPathThickness option in the airport customization dialog, separate from passenger path thickness.

- GSX (all versions) NEW: Airport graph node snapping. Gaps of up to 2 meters between disconnected taxiway nodes are automatically bridged, improving taxi route calculation at airports with fragmented BGL graph data.

- GSX (all versions) Change: Towing menu labels renamed to "Request Towing to Gate" / "Stop Towing" for clarity.

- GSX (all versions) Change: Push-in operator chair now rotates to pull orientation during tow and back to push orientation at detach.

- GSX (all versions) Fix: Engine restart could freeze when the airport map had been opened during the session, caused by background tile download threads blocking the shutdown sequence.

- GSX (all versions) Fix: MARS sub-position switch could leak properties (noPassengerStairs, hasJetway, etc.) from the previous sub-position when switching directly between two sub-positions without restoring the parent first.

- GSX (all versions) Fix: Traffic cones and fuel manhole were not cleaned up when switching gates, leaving stale objects from the previous gate.

- GSX Pro Fix: MSFS toolbar menu could stop responding after rapid open/close cycles, caused by stale tasklet references blocking the menu channel.

- GSX Pro Fix: MSFS toolbar menu third-party automation tools (BATC, etc.) could miss selections due to a ~100ms blind window during menu channel drain. Reduced to ~16ms.

- GSX (all versions) Fix: Fuel display crash when the SimObject text was destroyed mid-refueling.

- GSX (all versions) Fix: Crash in cargo loader when the bridge/platform tasklets were still running after dematerialization.

- GSX (all versions) Fix: Revoking services when not engaged could leave orphaned vehicles from gate preparation.

- GSX (all versions) Fix: Silent crash in the audio engine (soft_oal.dll) when Python code held an emitter reference past audio system shutdown. All OpenAL calls now check for valid context before proceeding.

- GSX (all versions) Fix: Audio engine shutdown ordering: emitters could briefly see the audio system as "initialized" while contexts were already destroyed, causing crashes during concurrent playback.

- GSX (all versions) Fix: Animation use-after-free crash when a tasklet was suspended mid-animation and another tasklet reset the animation queue. The animation system now re-checks state validity after every yield point.

- GSX (all versions) Fix: Crash in conveyor belt and cargo loader when re-materializing a vehicle after its parent had been dematerialized, caused by a null audio library reference.

- GSX (all versions) Fix: Airport data cache could grow unbounded during long sessions, consuming increasing amounts of memory.

- GSX (all versions) Fix: SimBrief reload while already engaged could cause the VDGS to re-enter lead-in mode.

Source

Wow. That is fantastic ongoing product support. Hopefully it will silence some of the haters.

Fuel Truck behavior is totally wrecked for PMDG. The height should be increased to minimum 3.65 and even after that the truck does not stand under the wing. 

8 hours ago, G-YMML1 said:

Fuel Truck behavior is totally wrecked for PMDG. The height should be increased to minimum 3.65 and even after that the truck does not stand under the wing. 

Which aircraft specifically. PMDG has 2 types in around 10 different variants.

737-800 here. Same thing on my side with the PMDG for me. Height tweak helps a bit, but the truck still ends up looking off under the wing, so it does not seem like just a one-airframe quirk.

10 hours ago, G-YMML1 said:

Fuel Truck behavior is totally wrecked for PMDG. The height should be increased to minimum 3.65 and even after that the truck does not stand under the wing. 

Running P3D and Concorde the fuel truck goes right under the delta wing. I can live with that because it would be nigh impossible for it to be correctly positioned for every aircraft. A small price to pay for added realism that has cost nothing extra over the original price. GSX remains one of the best addons for flight sim.

15 minutes ago, Ray Proudfoot said:

 I can live with that because it would be nigh impossible for it to be correctly positioned for every aircraft. 

It had been perfectly positioned all these years with Fenix and PMDG until yesterday. Hence, I'm not asking for impossible things.

10 minutes ago, G-YMML1 said:

It had been perfectly positioned all these years with Fenix and PMDG until yesterday. Hence, I'm not asking for impossible things.

Does Umberto provide any tools for user adjustments? If he doesn’t maybe ask if it’s possible.

1 minute ago, Ray Proudfoot said:

Does Umberto provide any tools for user adjustments? If he doesn’t maybe ask if it’s possible.

Yes, he did. The height adjustment does not affect the truck positioning in 3.9.2, I posted a request to investigate on their forums. Other users confirmed the issue. Hopefully it will be resolved.

Umberto in his best - always disappearing in the moments like this, even from his own forum 🙂 instead of simply stating - "Yeah, there is an issue, a fix is on a way". I bet that patch will follow soon, the issue will be fixed, and it will be like "there never was an issue" supported by multiple paragraphs of blah-blah-blah. 

Ive just started a flight in the Fenix and quickly became aware of my complacency when loading the plane.  Always load via the Fenix EFB, fuel is loaded followed by baggage then passengers.  All integrated with GSX and has always worked 100% with little need to check. I know in the real world this would all be checked.

Took off and in the climb got a warning that estimated fuel on board was insufficient. When I checked the fuel and the  Mass and Balance page on the EFB it appears that GSX failed to load ANY fuel into the aircraft.  No idea if it was a bug. Will be keeping a better eye on this on my next flight.  I left my desk earlier and passengers also seemed to load very fast and doors closed automatically despite steps still being in position. Its as if no passengers actually boarded yet EFB says they have.

Edited April 17Apr 17 by cj-ibbotson

3.9.3 fixed the fuel truck issue.

 

Umberto - thank you! 

This is realy great support and that over all the years now, some developers could learn a thing or two from that..😎

cheers 😉