/// The tail section is not with the rest of the aircraft.///
Let's apply a bit of logic here, a bomb in the hold, towards the rear of the plane would have taken the tail section off, on its own it's not very aerodynamic and would come down almost vertically. The rest of the aircraft still with wings attached would fly on (badly) for a short time before descending rapidly which means it would be seperated from the tail by possibly a reasonable distance, so tail section missing, shouts Bomb!