The other day just prior to launch on an auto mission, while the aircraft was armed and on the ground the GCS showed and verbalized an uncommanded disarm followed shortly by an (also) uncommanded arm. We looked at the tlog and it did show this happening, but the DF log did not show it. A closer look at the tlog again shows a disarm for less than a second:
Never saw this before, and haven’t seen it sense, but the guess is a bad packet? comic ray flipped a bit?
looks similar to this post from some years ago over on copter: