Why do i keep getting efis/nav frequency disagree in mcdu when I swicth to approach mode?What does that mean and what am I doing wrong?I believe the nav frequency for the localizer are both correct in nav 1 and 2.Thanks for your help,David

Hi David,Do you have the switches turned to VOR on the MCP Control Panel (I believe that's what it's called. It's the panel where you change the navigation display range, etc.)