I experienced that XP-11 flights with airliners did not catch the localizer given by Jeppeson charts for ILS approaches at particular runways. Looking at the IFR low enroute map of XP for the airport in question, I realized that for these runways the glideslope cross sections are not drawn. I assume approach and landing on them is not possible in XP? However, this applies e.g. to such major airports as KLAX that can only be approached from the west. If you follow the instructions of the quick guide for Boeing 747-800 Inter that has a tutorial from KSEA to KLAX 25R, the ILS approach does’nt work. Zurich, for instance (LSZH) cannot be approached from N or W. Is’nt that a bit meagre?