About a year or so ago I was unfortunate enough to have a passenger die onboard. It was a night sector and by the time we were alerted to the situation it was too late to initiate c.p.r.He had died in his seat.
Unfortunately it was a full flight so options were limited. In the end it was decided to cover him with a blanket and leave him where he was.
Some people have since suggested that we should have moved him. However although there is no hard and fast policy on this I can fairly guess that any options that include dragging down the aisle, propping up in the toilet or lodging in a trolley stowage are best avoided.
In this situation I think we made the correct decision.
Death on board is a rarity. If a pax keels over and stops breathing we will initiate resuscitation. We are trained to keep on with this until the paramedics reach us. In 99% of cases crew will still be working on a passenger when this help arrives.The question of what to do with a body therefore is not one that usually arises.