Of course a jagged hunk of metal masquerading as a plane is only one warning sign that skydiving with your uncle’s friend’s other friend was a bad idea. Here are a few more:

pilot is also wearing a chute

liability waver makes liberal use of the term ‘gross negligence’

the label on the backpack containing your parachute reads ‘Property of U.S. ARMY’

you are encouraged to leave valuables on the plane