With safety bar up, he apparently was leaning forward to adjust his bindings and fell out of the chair - down 47 feet.

I remember almost having the same thing happen to me on one of Roundtop's doubles. I was leaning forward and playing with my boots when the chair suddenly stopped and I pitched forward -- but did not launch, but it was close.

This is a cautionary tale that needs to be repeated as it can be so easy to forget that you CAN fall out of a chair.

https://www.summitdaily.com/news/customer-airlifted-from-keystone-resort-following-fall-from-chairlift/

A good reminder to us all.  Son thinks it's cool to have the bar up.  It really isn't.  Also think about northeast conditions where the chair can have a film of ice on it often... not a good scenario.