***What do you think they should do with a dead body? Lock it in the restroom? Toss it out an emergency door? What? ***
Ships have burial at sea so why not a special dump chute for burial at air.
DON'T LOOK UP!
You can't dump them out of the airplane. I'm not sure what the outside temp is at 30,000 feet, but can you imagine the body flash-freezing and hitting the ground as a fresh-frozen corpsicle?
(Lord, I'm sorry, truly I am.)