August 13, 201411 yr Hello, I haven't flown this bird for a while, and last time I did, I know I managed to activate NAV hold without any problems. I made my flight plan in the FMS, set the nav source to FMS, steered the plane towards an intercept heading so as to intercept the track, pressed "NAV" on the MCP and the plane nicely captured the track...now however, it seems no matter what I do, it just won't capture it, the FMU keeps saying "NOT ON INTERCEPT TRK". I checked everything I could think of, to no avail. Any ideas as to why is it doing this? I might be missing something but I feel this is so unlikely... Thanks in advance!