I already posted the video of this drone crashing, now you can see what led up to it as well.
This is a Rotor Concept Discovery UAV. It is basically a Walkera QR X350 Pro. I've had it sitting in a case for a while and wanted to test it. As you will see with the first 2 flights, the altitude and GPS hold were not working well. I had to re-do the calibration several times.
I finally got the calibration close on the last flight. Too bad the battery door didn't stay closed...whoops!