"You have same issue that i have with my board. AT just wont work. Dont do the same that i did..ctashed my rig multiple time with at. There is other ways to tune your rig.ch6 knob/ save tune etc. Is your rig unstable with stock pid's?"

"i had same errors today. in gps mode, a sudden lost of altitude.
I have had same thing before, so i was high enough to have time to change to STAB mode and make a save.
Any info what is causing this? magnetic interference ?

here´s log"

"Looks like that. Thanks, easier to understand with baro graph same time on the screen :) So it looks like that it was just coincidence that it went down during autotune. I must check power cable, maybe my diy dual battery splitter wire connections…"

"Thanks for taking a look. Batterys were full. I don´t understand this vcc or power value graph..i see a drop in the graph and i understand that voltage/current (?) went down at the end.. copter went mental before hitting the ground, it had plenty of…"

"here´s my autotune crash bin. file2.BIN"

"Cala said:
Yours and Ben log is the same?

Yes...sorry,,mixed bin files, reason for my crash was not fence error. looking into logs now.
Sorry again..too much going on at the same time :)"

"Hi
I decide to give AT one more chance. I had bad crash i while ago. After repairs and calibrations (copter 3.3.3) i went for a flight.
First flight all good, hexa was flying smoothly..(why did i tried AT!!!!), second flight, tried at and total flip…"

"maybe its worth of trying, i didn´t notice that param when i was doing my tuning. i got waaay too high pid´s after AT..
Please let us know how it went with lower value, if u deside to try that.
I still doubt that too high param was reason for your…"

"Ben said:
Hi Marco - the thing is I wasn't outside the Geo Fence. Geo Fence altitude for example was set to 120m to comply with CAA rules (and tested repeatedly earlier in the day) - you should see in the logs I was nowhere near that altitude. I was…"

"Correct. Maybe it would good idea to try tuning one axis at the time.?"

"when i was tuning my px hexa, i had coupple of weird crash with autotune, decided not to use it at all. Yeah, if it was hitting gf, it should not defenetly crash, tho your px was on at mode,so who know´s? i think i cant help u too much, but i will…"

"i dont know too much about log´s.. What do you think that "fence" error in your bin file is ? 
Sieppaa.PNG"

"Solved. Just format your memorycard."

"sorry, i forgot to mention, all these functions were launched when a 3 way switch for LG on my radio was on the retracted / up position."