DC —
IT’s easy to control cabin temperature from up front. The flight deck stays comfy while the passengers are quite, um, refrigerated.
Temperature lapse rate is roughly 3 degrees per thousand feet.
IF you are cruising at say 25,000, it’s generally below freezing outside the aircraft. Easy to keep the dearly departed chilled in the back.
good point. I still don’t think its humanly possible to remove 200+ bodies with 2 guys without exhausting and fatiguing themselves. That would expose them to discovery.