Jepp

[N201MKTurbo]

Flying enroute IFR by ded reckoning is legal. If you have current charts in your EFB can’t you claim to be navigating by ded reckoning and your navigator as an advisory device?

[tony]

I think chapter 10 clears up most everything discussed.

https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_90-105A_Ed_Update_2.pdf

[N201MKTurbo]

If your database is expired, can't you file as /A and fly by VOR using the NAV receivers in your navigator and flying ILS and VOR approaches? How could that be illegal?

The last time I flew IFR /A the ATC folks were kind of annoyed...

[toto]

42 minutes ago, N201MKTurbo said:

If your database is expired, can't you file as /A and fly by VOR using the NAV receivers in your navigator and flying ILS and VOR approaches? How could that be illegal?

The last time I flew IFR /A the ATC folks were kind of annoyed...

I think I sent the thread in a weird direction.  I was just asking out of curiosity whether the Garmin AFMS for the GTN series required a current database for ground-based navigation.  I later checked my own AFMS and did not see anything to indicate that the AFMS requires a current database for, e.g., flying on airways to an ILS, but the point is that the AFMS controls and not the regs.

Garmin absolutely can do this using their own configuration and their own supplement.  An example is the fact that Garmin requires a clear GPS signal in order to fly an ILS using a GFC500.  This isn't something that anyone at FAA requires, and nothing in the regs would say you need a GPS in order to fly an ILS, but Garmin requires it and included in their AFMS.  So even if you *could* do it with your GTN+G5+GFC, your AFMS would prohibit.