Well, if it were to happen, my PERSONAL preference would be to set G/A alt, disconnect and fly manually
and go-round if it looks dodgy or PNF calls for it. That does not need anything 'looking up'
Why this obsession with automatics? Mind you, I know nowt 'bout t'bus
Or at Stockholm Arlanda where a typical GA altitude is only 1500 ft
...and look what happened there!