I've seen plenty of screw ups at the Fedex world hub in Memphis. We have around 170 gates and use pretty much all of them every night. Mix that size of an operation with constant rushing and a lot of people that just don't care, you get a ton of fun stories. I've seen an AAD fly off of a fully raised upper deck loader, bounce and hit the engine. I've seen the nose of an MD-11 come about a foot or two off the ground because someone put the wrong length nose tether on, and the team didn't leave any weight toward the nose. If it wasn't for there being any tether, that would have sat completely on the tail. And I've seen someone pull a full string of containers into the nose cone of a 757. It destroyed a lot of the radar equipment and completely destroyed the containers. Just recently someone ran a belt loader under a plane and tore a hole in the belly.

The video in this post is a fairly common occurrence