In X-Plane 11/12, the position of the localizer is incorrect in all chilean airports which causes incorrect ILS approaches. Opened earth_nav.dat and checked the coordinates and they are incorrect compared to google maps. I corrected them to the one on maps and now they work perfectly. This happens in all airports in Chile with ILS, but not in other countries like EE.UU or Argentina (except SAME). The airports that need correction are SCDA, SCAT, SCEL, SCIE, SCQP, SCVD, SCTE, SCPQ and SCCI, also SAME in Argentina). Hopefully this can be fixed for next airac update as this issue persists for YEARS.
Windows 10/11
X-Plane 11/12
All addons (primary tried with ToLiss aircrafts)
Airac 2306 (happens in all tho, for years)
Hi,
can you confirm, that your used coordinates are aligned with the AIP Chile also? Because only these reference is a valid one …
To report such issues we need a real world reference, like from the AIP Chile. Google earth/map is a generel one but not an exact one, and also sometimes not accurate.
Thank you
Richard
Just a sample:
Jeppesen source:
SCDA ILS19 IIQQ - -20.55305556, -70.18222222
XP12 earth_nav.dat
4 -20.553055556 -70.182222222 105 10990 18 68222.871 IIQQ SCDA SC 19 ILS-cat-I
6 -20.522777778 -70.179444444 105 10990 18 320182.871 IIQQ SCDA SC 19 GS
12 -20.522777778 -70.179444444 105 10990 25 0.000 IIQQ SCDA SC DIEGO ARACENA INTL DME-ILS
Result in google maps:
… and last, here directly from the AIP Chile:
In all cases the same coordinates - and the position in google maps seems also be ok.
Cheers,
Richard
No. I used the locations of the localizer on satetital imagery like google maps. I know it’s not the official source but it works when using it. When using the default one you recommend, the localizaer is deviate causing incorrect approaches. Try doing and ILS T at runway 17L at SCEL in X-Plane and you will notice it is deviated to the left making it unavailable to do an CAT III Autoland for example
ILS T 17L with modified earth_nav.dat:
ILS T 17L with navigraph default earth_nav.dat:
You can clearly see there is a big difference. Tried in X-Plane 12.05, AIrac 2306 (default yours and modifcated by me), ToLiss A321 v1.5.1, real weather in both situations (like 5 minute difference), same time, same location, using default gateway airport, has happened in any airport including addons
Again, we use real world data and as I have shown you from the AIP these are the real world coordinates, which are official published by the country. Possible that the runway is slightly not 100% correct but thats a scenery issue then.
As I have shown it’s not a navdata issue (at least at one of your examples SCDA.
Cheers
Richard
… only to show you the reality again:
Here the coordinates directly from the AIP Chile - SCEL ILS 17L ident IUEL:
converted into the decimal format:
- 33.41138888, -70.78347222
… and here, what you have in the earth_nav.dat file:
4 -33.411388889 -70.784722222 1549 11030 18 63897.427 IUEL SCEL SC 17L ILS-cat-III
Exactly! the same coordinates as in real … sorry, but as you see again, the coordinates of the ILS antenna also at SCEL 17L are correct, according the real-world (or at least according the published information of the country via the AIP). In other words, I don´t say that it´s possible that the localizer is not 100% aligned but our (and from the source provider) reference can only be the AIP of the countries and not any coordinates, based on a sat image, sorry.
Also in this case, the coordinates are absolutely correct in our source, checked with the AIP Chile. So, when you mean (and we can´t really check this) that this is wrong, please report this to the authorized organization in Chile. We, nor our source provider has any influence on the report of the countries - the source provider must trust what the countries shown in their AIP and I hope also in this second example it´s clear, that these coordinates are correct (between Jeppesen and the reported country Chile).
Cheers
Richard
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