Jeff: Did the topic of smoke hoods enter into the discussion at any time?   I kept a few lightweight cannisters (EVAC-U8) hoods in the TBM 700 since the descent from flight levels would be at least 3 minutes at 10,000 fpm.  I also kept them in our condo for stair evacuation in the event of fire.  They are cheap and I believe have a 10-year life.   The product I bought is now sold by DuPont and might be interesting to anyone who might want to buy some extra time in a smoke situation, whether in an airplane, airline, hotel or other location.  I don't have them in the Legacy but this discussion has reminded me that it is cheap insurance so I'll get another two.   Here's the product I bought but I notice Aircraft Spruce 2 different types and not the evac-u8.