Context: FSLTL injected AI aircraft via AICreateEnrouteATCAircraft
Similar MSFS 2020 issue: n/a
Bug description: We’ve seen occasional injected AI aircraft fail to play gear animations during their landing approach. Another AI aircraft instance, using the same model/livery, will work fine, so does not appear to be a model issue. Aircraft are in the correct STATE_LANDING state but when the issue occurs, gear animation never plays, aircraft attempts to land but with gear up, is never seen as on ground and runs off the end of the runway.
Repro steps: Unable to repro on demand
Attachments:
Gear animation activated as expected:
I have used FSLTL at KJFK but couldn’t see any aircraft landing with gear up.
Just as @Kaiii3 did for the issue with aircraft stuck in rollout state, I need you to isolate a scenario where this occurs.
Ideally, provide me with a PLN and SimObject name that would produce the scenario reliably.
The “reliably” part will be difficult. The screenshots above show the same model/livery used arriving at the same airport, and different results. But I’ll see if I can come up with something.
In my own testing, it only happened maybe 1 out of every 10 times, but we’ve had user complaints of it happening much more often.
For the rollout issue, I made a SimConnect app that spawed the SimObject @Kaiii3 indicated with the PLN he provided on every ‘z’ key press.
If this happens 10% of the time, this is still enough for me to investigate.
@FlyingRaccoon can you check in what Traffic-State the gears should get extended? I see currently mixed results, some deployed on “landing” some already in “Traffic Pattern”.
I’m not sure if it’s related, but I recently made a change in vPilot (one of the pilot clients used to connect MSFS to VATSIM) as a workaround for a widespread problem where aircraft were landing with their gear up even though the pilot was definitely lowering the gear on final.
The workaround was to set the gear extension percentage to some positive non-zero value just before sending the gear down event to the model. You can read a detailed account of the troubleshooting that I did to arrive at this workaround here.
I found that the behavior was consistent and reliable, so the symptoms are different than what is being described in this thread, so it may not be the same issue, but maybe it will be helpful.
This is not straightforward in the code, it depends on the type of flight plan type, whether you received clearance or not, etc…
From what I see in the code, I feel like their could be a loophole for IFR flightplans where ATC instructs traffic to circle around, and they would switch from Enroute to Landing without extending the gear.
I’ll see if that’s something I can replicate.
I didn’t have much success, I witnessed other issues that I will add to our backlog, but no aircraft landing with gear up so far.
Let me know if you have more success.
Aircraft flying over the runway at low alt / high speed in enroute state, then switching to Go around state and flying in an upward straight trajectory indefinitely
Aircraft landing far beyond the runway and then being stuck in a rollout state indefinitely while in the middle of nowhere
Another strange behavior: This aircraft had a go around and started the climb but a few seconds later got the state back to another Approach to 8 and “landed” with gear out and flew a few feet above ground until removed: [2025-12-17T20:40:56.421] [INFO] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.23:G.45 VFR..0 | Enroute to Phoenix Sky Harbor International at 11200ft IFR, 36km remaining
[2025-12-17T20:40:57.054] [DEBUG] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.24:G.45 VFR..0 | Other state STATE_SLEEP
[2025-12-17T20:44:29.142] [INFO] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.43:G.45 VFR..0 | Approach to 8
[2025-12-17T20:51:06.678] [INFO] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.45:G.45 VFR..0 | Go around at 8
[2025-12-17T20:51:14.745] [DEBUG] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.45:G.45 VFR..0 | Other state STATE_GO_AROUND
[2025-12-17T20:51:15.745] [INFO] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.45:G.45 VFR..0 | Approach to 8
[2025-12-17T20:52:06.686] [INFO] default - AAL2575 - A21N - N420AN @ KBOS → KPHX| id 80707584 | Counts IFR-A.41:G.45 VFR..0 | Removed due to go around
If you are intrested I can send you a download link to my Spotty app that will let you find many strange AI aircraft situations in an easy way
