Lonewolf_50
[QUOTE I recall a "rule of thumb" (which I have seen discussed here on PPRuNe regarding in flight fire scenarios) that if you don't get the fire out / aircraft on the ground in about fifteen minutes, the chances of it all ending in tears increases dramatically. ]
I recall 12 to 18 minutes and that's the time frame I give in my sim sessions.
VMO/MMO to around 10 miles and do the approach in LNAV/VNAV particularly if your plane doesn't auto load the ILS. WHatever it takes to get lined up and below the clouds.