Quadcopter, APM2.5, Arducopter 2.9.1b.
During an Auto flight mode (with hovering on a fix position), it crashs down uncontrolable from 80m altitude. I did repeat this mission many times before, never such problem.
When I look at log/tlog files(atatched), I noticed at the middle of the Auto mission, at 80m, it "Disarmed" for no reason.The log files shows altitude stop at 80m, throttle stops at medium value.
It looks for me APM2.5 was reset in middle of the flight. Could someone confirm this?
Battery was at 64%, no errors in log file.
What could be the reason for this? It scares me a lot.
PLEASE, I need to find why happened.