Of course aircraft type is crucial here.
For info on B757/767/787/777/747 you still have full CAT3B autoland capability with total FMC failure !
RVSM is not affected by this either.
MNPS and oceanic ops are not approved without at least 1 FMC so would need your head examining to carry on and enter that airspace like this. Of course if already in then crack on as best you can.
BRNAV in europe which is RNP5 so thats gone with the FMC's.
The 787 has 3 FMC's.....so job done
