Recently flying into Guam RW 06L ILS and found that the ILS frequency shown by RC was different than the freq posted for the same runway. Was flying PMDG747 and could not adjust acft freq to the RC freq. Why the difference and how should I handle that in the future? Enjoy flights to Guam and I have flown into and out of that airport over 300 times IRL.

the frequency comes from the scenery file. if the frequency is different in real life, the scenery file is wrong.you can edit the r4.csv file, with notepad (make a backup first), find the offending runway, change the frequency. that still won't change the frequency in the scenery file, but rc and the fmc will matchjd

Thanks, JD.