Denti
Quote:
Our SOP recommends (but of course you can deviate) that both use MAP if you have two FMC and two GPS receivers. That still leaves you with the raw data ILS indication on the PFD which is an approved crosscheck.
Isn't that putting the cart before the horse? The ILS display isn't there to crosscheck the map, it's there to be flown and for PF to act on the deviations indicated. Flying the map is really the realm of GNSS approaches is it not? We can still fly an ILS with an ANP > 0.3 after all.
You mistook me there. I was going from the usual way we do fly ILSes, that is a dual autopilot approach later on followed by a manual FD part. That way you fly the FD and crosscheck the PFD ILS indication. The map is only there for situational awareness and additional indications, it is not primary means of navigation in that situation. Besides, we actually do fly precision GPS approaches to the same limits as a normal ILS in the two test installations that i'm aware of in europe (bremen, currently u/s and malta), and even there you do not fly the map but still the ILS indication.
Flying raw data i would allways use an expanded ILS view or even full rose mode (which is more fun imo).