Apologies to bring up an old thread.
In continuation to the ORIGINAL question asked, being in the same situation that I am, after getting airborne and prior to the NAT ENTRY,
If there is a GPS failure indicated, I Have 2 FMC and the 'ADIRU UNIT',
The questions are
"Do I have 2 LRNS as FMC L and FMC R NOW To Enter NAT ?"
" is it ok to have both FMC have the same input from ADIRS and Continue? "
Any info on above subject matter will be of great help
