Originally Posted by
pineteam
Ahhhh the nav aids. Never really undestood why people put so much stress on it. Talking about A320 family: I see guys deselecting all sort of U/S VORs during cockpit preparation, but unless you are flying a very old model, the FMGC never uses VOR/DME for navigation as long as you have GPS primary.
What happens when GPS or FMGC goes haywire? Or is that not the possibility you are taking into account?