I've read the entire thread and think I understand most of the cheese holes including night vfr risks and ils not aligned with this approach.
But can someone explain to us GA folks why the FMS isn't always in use as an extra precaution?
I thought that FMS had dbase access that could load up everything, vor, dme, ils etc and GPS when available.
So am I misunderstanding the potential ability of fms to provide a backup for vfr or do airlines simply not use fms as backup?
Probably missing something obvious so please don't toast me
