You have a ball on an airplane..
Shady Lady - airplane - happened in 1943.
Kaleva - airplane - happened on 1940-06-14.
a helicopter Additional answer That depends on what you mean by airplane. Some people might argue that a helicopter IS an airplane
it broke
we will be burned
you might crash
The airplane will accelerate towards the surface of the earth which, if not accounted for, will result in a structural failure of the aircraft.
it can crash or it can be hijacked by terrorists
Everyone on board would blow up
It to get lost or damaged or stolen.
This can and does happen and is not fun at all.