The Black Square fleet-wide ILS tracking issue continues
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Hello,
Sadly, it would appear the Caravan retained the ILS tacking issue that plagues most Black Square aircraft in MSFS 2024, when using either the KLN90B GPS unit or the KNS-81 RNAV suite. My experience suggests the ILS tracking issue does not occur when using either the GNS suite or the PMS units. I have not tested with other avionics.
The issue is the same as with other Black Square aircraft. The autopilot fails to capture the localizer and continues in HDG mode. It does not help to disengage the autopilot and then re-engage. I found no workaround to have the autopilot capture the ILS when using the aforementioned avionics.
It is somewhat disappointing that this issue still exists. What is the point of throwing in all these units as "options" when they don't work?
Clearly, it's something that Nick needs to resolve - the KLN90B works as a charm elsewhere, and the KNS-81 is a Black Square-developed suite. I hope this bug will finally be resolved.
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@kityatyi What other planes make space for the KLN90B? I might have to take a look at them.
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Thanks! Somehow I hadn't noticed it was an option in the Aerostar. Time for some more fun.
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My C208 KAP140 sometimes just completely ignores the ILS too. I'm starting to think it's a issue with my peripherals.
What's your setup? Do you use any external radio/autopilot hardware? I use a fairly niche thing called a Class Echo, interfacing with SPAD.next, to control various systems, radio, autopilot, etc. I haven't tested enough to figure out what's actually going on, but because I've just imported and adapted a generic aircraft profile for the C208 that mostly uses default sim bindings and not the LVARs in the manual, I'm suspicious there's an issue there. The next time I have time to sit down and troubleshoot I'll be making sure to see that my setup only uses LVARs specified in the manual, and see if that helps.
When I just fire up the sim without this hardware, I'm usually not able to recreate any issues. Swapping between TDS GTN 750 nav and VLOC from both the unit and the main panel buttons seems to work as expected.
FWIW, the LOC tracking isn't working too well regardless, often happily settling 2-4 degrees off the LOC, but I've not flown a lot of ILSes in this thing yet so I don't have a good data set.
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Hello! I don't use anything like that. All I have is the Thrustmaster Warthog HOTAS stick/throttle combo and a cheap Thrustmaster pedal.
I doubt anything's "wrong" with your peripherals. The "stock" GNS systems work flawlessly.
What I suspect (without any basis to state it, only guessing) to be the problem is that Nick somehow managed to solve the issue of the RNAV system not being able to drive the autopilot. Back in the MSFS 2020 days, this ILS tracking issue didn't exist, at least I didn't experience it. Since the RNAV system of Black Square aircraft is now capable of working with the autopilot, the problem appeared. At least, that is what I suspect. But I may be perfectly wrong. It just makes sense to me that while Nick managed to somehow workaround whatever prohibited the RNAV system from coupling to the autopilot, the solution to one problem might have caused a different problem.
Whatever is causing the problem, I hope Nick can find a solution.
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I did a bunch of flying yesterday in the Baron, Bonanza, and Caravan, and tested this in all three. I'm still having a similar issue: I was able to capture localizer but NOT glideslope after using the RNAV units -- the autopilot stayed in appr mode, and glideslope indicator appeared, but I flew right through it at the final approach fix in each test. In my final test, I tried recycling appr mode and it didn't help. I got the same behavior whether I used the appr mode on the RNAV units, or the KAP 140.
I do use Axis and Ohs for control binding, so sometime this week I'll test with default sim bindings (although I don't look forward to setting them up!). For today.. just gonna fly for fun.
I have yet to test with the KLN-90B.
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I wonder if this is related to my post below. The topic is slightly misnamed, as it's VOR tracking using any avionics. The key seems to be the use of third-party control mappers such as Spad.Next or FSUIPC. I honestly haven't done any further testing for a while.
https://community.justflight.com/topic/10383/nav-mode-keeps-changing-to-rol-with-non-gps-avionics
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Never used anything like these and still have the issue, 100% of the time.
I am not going to buy another BS aircraft until this is addressed. Very frustrating and affects all MSFS 2024 BS aircraft.
@kityatyi Oh, I'm surprised to see that I never responded to this. I've seen sporadic reports of ILS capture issues since the release of MSFS 2020. The difference you're finding between the avionics is to be expected, as some (WT GNS 530) employ their own completely custom autopilot, while the others use the native autopilot. I have seen the occasional missed glideslope since MSFS 2020, but I have found that engaging approach mode at the point of glideslope intercept has a 100% success rate.
@SteveKane That was my first thought too, since it's very clear that something became bugged in the native autopilot at some point with MSFS 2024. As others have demonstrated, this is a local phenomenon caused by 3rd party software, so the solution will have to come from Asobo.
As for this localizer intercept issue, I have never seen it myself, but I don't doubt that it could be another bug introduced into the native autopilot. To the best of my knowledge, there is nothing I could change as a developer that would affect localizer capture, other than maybe the PID constants, which seem to work well in all my aircraft for all other autopilot modes. The outlier here would be the KLN-90B (which uses the native autopilot) working in another aircraft, which has not implemented its own overriding autopilot (which may be the case in the Comanche and Aerostar). If you could provide an example of that, or even just a video of what you're seeing on your end, that might be helpful for troubleshooting.
@RPGamerous Just one more quick clarification: The approach mode on the KNS only affects the CDI scaling, so it will have no effect on autopilot operation.
