Crash Log Analysis

Hi all,
I am new here and new to building quadcopters.

I managed to successfully build and fly a quadcopter. But I had a major incident today and I was wondering if anyone could help?

I was flying in loiter moder and was keeping the craft under control, but all of a sudden it drifted violently, flipped over once or twice then just dropped out the sky. I have looked at the log files but I cant not understand it at all.

I was wondering if someone could take a look and tell me what went wrong.

All 4 legs have snapped on impact but I cut 4 spare when I laser cut them so I can easily fix it.

Also nooby question, what exactly does brown out mean?

Regards
Rob

The log does not match your issue. It shows stabilize for the hole period and no GPS fix.

Mike