Solutions
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ramprat's post in Lear 35A and ILS approach was marked as the answerIf you are refering to the GTN Nav1/2 problem, it's in the F1GTN configuration utility (F1GTNconfig.exe). Run it and highlight the airplane from the list, then click on "Configure GTN" in the lower right corner. That will bring up another screen. Click on the tab at the top labeled "GTN750 unit 1". Click on the top box "Radios" and select COM1/NAV1. Then click on "ENTER" and "EXIT".