OMDB ILS 30R and 30L

Navigation Data ILS
1

We had a user notify us (FBW) of an issue with the ILS being aligned to the right of the runway at OMDB (Dubai) 30R. I was able to reproduce the issue both with our airplane as well as the default Asobo A320neo. It also occurs with runway 30L. I did not check the other directions.

When I removed the Navigraph nav data and used the stock MSFS nav data, the issue disappeared.

This is using the MSFS scenery for OMDB, i.e., no custom scenery installed for it.

2

Hi,
thanks for the question - I assume (or better I´m pretty sure) that this is due the wrong mag-var in the generic airports. It looks, that ASOBO/MS doesn´t use the published mag-vars, it looks they calculate the mag-vars on every cycle by their own.

In your example at Dubai (OMDB):

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The published airport mag-var is 2°E but in the generic airport file ASOBO/MS uses 1.7°E which are 0.3° difference.

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The same are on the runways directly - it looks that ASOBO/MS calculate the headings and the mag-var for the runways and don´t use the real published one.

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… against our data:

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You also see, that the mag-var between the ARP and the runways are slightly differ - doesn´t make anything but it´s a indicator for me, that they calculate the mag-var and don´t use the published one.

There are hundredths of such examples in the MSFS but we use the real world values and that’s the problem in such cases, why it´s slightly off the center line.

Hope that helps,
Richard

3

Hi again,
it seems that there is an issue in rev. 2 - ar least I can confirm the issue on several airport (not on OMDB) but there is one.

I’m currently checking what happens and why and of course I will build a new revision, when it’s fixed.

Soery & thank you very much for the report. In general, my answer before is still valid …

Cheers
Richard

4

Thanks for looking into it!

5

Hi,
this issue should be fixed with revision 3 now. I have re-created a new revision (3) … please install this new revision via our Navigraph Hub. Thank you!

Cheers,
Richard

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