A crash without any apparent reason arducopter 4.3.3

ArduCopter Copter 4.3
1

Hello.

I am at my wits end with this one. I see nothing wrong in the logs but my drone crashed upon reaching the target altitude. I see no voltage spikes that would indicate any kind of short, board voltage seems ok.
It all seems like a failed XT60 connector, but today I flew a drone where a battery strap failed and the battery was hanging from the drone and it did not come off.

Maybe someone sees something that im missing.

2

When a log abruptly ends like this one does with no messages it means the Flight Controller lost power. There is nothing in the log to indicate why (vibe event, abrupt Pitch/Roll, power spike/drop, etc).