Hi. Had a flyaway today. My heavy hexa (11kg) with Pixhawk ArduCopter 3.3.3 crashed into a tree after something failed in RTL sequence.
After analyzing all info in both dataflash and tlogs, I can not find anything wrong. RC Connection was lost and the drone went into RTL, came to the home point, hovered for several seconds and then went away and down until a tree caught it. I checked GPS, compass, and suggested info in manuals on the APM website.
Maybe more experienced pilots can find a problem in my logs. Please advise.