Indeed
It is indeed. I have had total FMC fail on the 738 3 times and once HDG is selected and my friend in the RH seat is deeply and intimately engaged with the QRH and I have concocted a plan B for the next few FIR boundarys , Murphy has let the old Boeing reset itself and we order some coffee.
And for the rest of the trip we pay a bit more attention to which country we happen to be in.
PS
Still not so keen on Beirut raw data, not quite the place for large navigation errors!
I will practice in Europe
Thanks