Hi, first I have to say that this is an issue common to all planes using navdata in the X-Plane native format, so I've posted the same at the .Org forums. The IXEG 733 has its own format but it is affected as well (maybe because it gets frequencies from XP data?).
Basically, when you select the ILS Z 07L (IFNE) approach at Frankfurt the plane takes the ILS frequency from the ILS Y 07L (IFEL) approach that is 110.30. The correct frequency should be 111.75.
Here the relevant lines in the navdata text files (using Navigraph current 2007 AIRAC cycle).
From wpnavaid.txt file in NavData folder:
From X-Plane the earth_nav.dat file:
For sure @Litjan can help cause he plays home here
Thanks.
Cris