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Kaiii3 avatar image
Kaiii3 asked whakamolenz commented

[SU11] SimConnect based PLN-Waypoints not overriden by ATC for approach/landing (AI Traffic)

Hey, over the last couple of days we observed a new AI behavior when it comes to AI following waypoints from the provided PLN file.

Till SU11, Waypoints close to the airpport got overriden by the Approach/Landing waypoints send by the internal TAC system. Since SU11 this is no longer the case, AI will fly to the last PLN Waypoint and then start the Approach.

1668801590569.png

In the above Image you can see the flown path by the Ai (orange), the last waypoint in the PLN (blue), the destination (red) and the STAR Waypoint it is heading torwards (black). Until SU11 the Ai would head torwards the STAR waypoint diretly after injection and ignore the last waypoint in the PLN file.

Was this a planed change?

simconnect
1668801590569.png (1.2 MiB)
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FlyingRaccoon avatar image FlyingRaccoon ♦♦ commented ·

Hello @Kaiii3

I don't think it was planned and you'll confirm or disconfirm but I don't think the game generate flight plans that produce this issue.

Regards,
Sylvain

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Kaiii3 avatar image Kaiii3 FlyingRaccoon ♦♦ commented ·
Hey Sylvain, correct the PLN files are generated with our tool. At the moment most of our PLN files are APT -> Last SID Waypoint -> Route -> First STAR Waypoint -> APT


With the current issue in SU11 regarding SID/STAR waypoints assinged by ATC this new routing was quite visible.

But since we know that Waypoints by PLN files are ignored by AI TAC, it might be worth a try to generate a PLN file ingame with SID/STAR procedure and see how the airplane is routed during the approach - I can try to test this during the weekend if you want?


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whakamolenz avatar image whakamolenz Kaiii3 commented ·
@Kaiii3 @FlyingRaccoon - i actually did that during my testing and tried again yesterday. Inserting an aircraft with a full pln file generated from the in built flight planner and poisitioning the aircraft on the transition point for the STAR in the plan. The aircraft just ignored the plan and still flew the first alphbetical STAR available turning in the wrong direction and flying to the transition point for that STAR. Happy to see evidence suggesting this works differently but i am yet to find anyway to use the actual STAR given.
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1 Answer

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ErikNL avatar image
ErikNL answered

I think I found a related issue, occuring with 3rd party airport installed. When using the in-game flight planner with SID and STAR I see the following:

- VFR map will show the correct route, but STAR waypoint labels are gone
- MCDU is missing STAR waypoints
- ND draws a line from the last waypoint directly to the airport

Also see: https://forums.flightsimulator.com/t/navdata-incomplete-since-su11

Don't want to hijack this thread at all, but I feel the issues are related!

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