Please tag your post with #pc and/or #xbox.
PC
Are you on Steam or Microsoft Store version?
Steam
Are you using Developer Mode or made changes in it?
No
Brief description of the issue:
All aircraft that attempt to do a coupled ILS approach end up tracking the localizer well, slightly to the right near minimums. The glideslope tracking descent coupling always seems to end up way low relative to the glideslope diamond. Have seen this issue in the A320, 747, 787, DA40,DA62, and TBM. The aircraft always ends up low without correction; will collide with terrain about 1/2 mile short of runway if corrective action is not taken.
Provide Screenshot(s)/video(s) of the issue encountered:
Detail steps to reproduce the issue encountered:
Any ILS approach with a coupled autopilot in approach mode. Tracking LOC and GS.
PC specs and/or peripheral set up of relevant:
Intel i7 9700k
Geforce GTX 1060
Sim installed on WD 1tb SSD
Build Version # when you first started experiencing this issue:
all versions since launch. only submitting now.
If the aircraft is following the localizer and the glideslope at the start of the approach, and it doesn’t towards the end, low airspeed will cause this.
Having said that, and that isn’t the issue, you may want to search for similar issues here.
There are a lot of posts here for ILS glideslope low, and ILS localizer right.
Not sure where these are. Barring gross miscalculation of required power changes to maintain glide slope since very few aircraft have auto-throttle, one can literally ride the AP to below MDA and you will still end up just beyond the piano keys in the TD mark. Disclaimer; this is with Working Title versions of the FMS.
Where I find inconsistencies is using VASI/PAPI (where visible/available) to cross check GS. Visually, you will look low.
2 Likes
I make sure to hold at least vref for all of these. I fly the DA40 regularly and even at the correct airspeed it drops
Vref is a bit low.
That is the speed you want to be at when you are about to touch down.
Try Vref + 3 to 5 extra kts.
Yes the glideslope antenna is often not coinciding with the VASIS for some reason. It should, there are very few airports where they don’t coincide and then its often only a few meters, not as extreme as MSFS. The VASIS is always aligned with the aiming point markers (at least so far I haven’t seen any discrepancies with that), so its the glideslope antenna which is off.
Vref is speed over threshold, touchdown usually occurs at Vref -5/10 kts for most aircraft. Although Vref is more a term used on bigger turboprops and jets. On small GA aircraft usually the term Vat is used which corresponds to 1.3 x Vs.
1 Like
Any difference between the VASI angle and the glide slope are documented in approach chart. Also, there is a slight difference in runway touchdown points.
1 Like
For me It (re)happened since december.
Beach G58 Baron with G1000.
I recorded an ILS approach at LFLS and you can see the ground track followed by the airplane.
On the left I intercepted the loc near the NDB. Well established in final it went on the left and after on the right in short final. without correction landing would have occured next to the runway.
I pratice the same airport with the A32NX and the ILS is fine…
I don’t understand why 
Here with the A32NX. Right on !
