My ILS approaches fail. I can load and activate a procedure and the aircraft follows it, but the glide slope is never activated. The APR button is not responding. Looking at NAV1 (or NAV2) the correct frequency is loaded, but the identifier field is blank as is often the case if far away from the airport (no signal).
I guess this is the main reason for the malfunction.
So the question is - am I doing something wrong or is the receivers in error?
I believe the G3X on its own is not certified as an IFR instrument, so it can not do those procedures. You need to have it coupled with an IFR-capable device to do that. I think there are some GNS430/530 + G3X combos that would be valid for example.
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I did find procedures buried in there. Didn’t try one, though, so I don’t know how completely they’re modeled.
Ive done them previous to SU15. It’s possible they are not doable without a IFR capable unit after SU15. I only fly the xcub vfr these days so haven’t even noticed if it has changed.
I just did an ILS approach using NAV1, with glidescope, in the Xcub with default livery.
KSMF ILS 35L
LOC/DME on 111.1, input via the console
runway is at 348 degrees, laid in to the course with the knob
First attempt to catch glidescope I hadn’t yet captured LOC so I don’t think it’s willing to catch then. Had to go lower once aligned, and it caught fine and beamed me on down.
By any chance is the CDI being left on GPS? This won’t see the glidescope on ILS procedures but should happily still align you with the runway…
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Aha, the procedures are limited to the FAF inbound. To get to them:
Split the G3X
Scroll the right screen to FPL
Enter a flight plan to an airport with an IAP
Press MENU
This will bring up the flight plan options menu
From there, press “select approach,” which will bring up a screen similar to a full PROC page, but you’ll notice it’s missing the full procedures. Still, though, nice to have at least a final approach, but yeah, not IFR certified without a separate navigator.
Thanks @Vibstronium and CharlieFox00 for the explanations.
I managed to get it working but it is not a simple task messing around with NAV1 frequency and course, CDI, altitude, speed etc.
On top of this the RNAV approaches do not work either.
I find it much easier in the Cessna Caravan with the G1000. Everything here is a piece of cake, intuitive, rock solid and stable.
Thanks anyway for taking your time to try and explain.
Just to clarify: the G3X won’t do full RNAV approaches on its own at this time, just advisory final approaches. This is a limitation of the real-world unit as well, which needs to connect to an IFR navigator unit like a GTN or GNS to display procedures on the G3X.
At this time, I don’t believe the third-party GTNs in the sim are compatible yet, but I imagine they’re working on it pretty hard. The GNS units are compatible, but you need to be in an airplane that is equipped with both the GNS and G3X.
Note to future readers - I expect this post to be obsolete pretty quickly.
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I also was able to capture a full ILS approach in the NXCub at KBWI, runway 10 with NAV1. However, as I think you indicated, the CDI for some reason does not track the aircraft’s dirction when locked onto the localizer. It follows the aircraft’s direction perfectly on GPS but something seems haywire with NAV1.
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Looking at the IRL manual… for a LOC source (for ILS):
Ensure that LOC1 is the selected navigation source. The HSI
should automatically slew the needle to the correct course.
whereas for a VOR approach you have to
Select the inbound approach course (radial).
I’m not sure the VOR vs LOC behavior distinction is modeled right? Will give it some more tries later and gather data. 
from this g3x touch manual:
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There certainly seems to be something amiss here.
I so hope that most of the MSFS 2020 developer’s “lessons learned” will carry over to MSFS 2024 in November…
At any rate, I am ready to camp-out, so to speak, to be among the first in line to buy it.
